The Experts below are selected from a list of 228 Experts worldwide ranked by ideXlab platform
Jan Zaanen - One of the best experts on this subject based on the ideXlab platform.
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interplay between electronic topology and crystal symmetry Dislocation Line modes in topological band insulators
Physical Review B, 2014Co-Authors: Robertjan Slager, Andrej Mesaros, Vladimir Juricic, Jan ZaanenAbstract:We elucidate the general rule governing the response of Dislocation Lines in three-dimensional topological band insulators. According to this ${\bf K}\text{-}{\bf b}\text{-}{\bf t}$ rule, the lattice topology, represented by Dislocation Lines oriented in direction ${\bf t}$ with Burgers vector ${\bf b}$, combines with the electronic-band topology, characterized by the band-inversion momentum ${\bf K}_{\rm inv}$, to produce gapless propagating modes when the plane orthogonal to the Dislocation Line features a band inversion with a nontrivial ensuing flux $\Phi={\bf K}_{\rm inv}\cdot {\bf b}\,\, ({\rm mod\,\,2\pi})$. Although it has already been discovered by Y. Ran {\it et al.}, Nature Phys. {\bf 5}, 298 (2009), that Dislocation Lines host propagating modes, the exact mechanism of their appearance in conjunction with the crystal symmetries of a topological state is provided by the ${\bf K}\text{-}{\bf b}\text{-}{\bf t}$ rule . Finally, we discuss possible experimentally consequential examples in which the modes are oblivious for the direction of propagation, such as the recently proposed topologically-insulating state in electron-doped BaBiO$_3$.
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interplay between electronic topology and crystal symmetry Dislocation Line modes in topological band insulators
Physical Review B, 2014Co-Authors: Robertjan Slager, Andrej Mesaros, Vladimir Juricic, Jan ZaanenAbstract:We elucidate the general rule governing the response of Dislocation Lines in three-dimensional topological band insulators. According to this $\mathbf{K}\text{\ensuremath{-}}\mathbf{b}\text{\ensuremath{-}}\mathbf{t}$ rule, the lattice topology, represented by Dislocation Lines oriented in direction $\mathbf{t}$ with Burgers vector $\mathbf{b}$, combines with the electronic-band topology, characterized by the band-inversion momentum ${\mathbf{K}}_{\mathrm{inv}}$, to produce gapless propagating modes when the plane orthogonal to the Dislocation Line features a band inversion with a nontrivial ensuing flux $\ensuremath{\Phi}={\mathbf{K}}_{\mathrm{inv}}\ifmmode\cdot\else\textperiodcentered\fi{}\mathbf{b}(\mathrm{mod}\phantom{\rule{0.16em}{0ex}}2\ensuremath{\pi})$. Although it has already been discovered by Ran et al. [Nat. Phys. 5, 298 (2009)] that Dislocation Lines host propagating modes, the exact mechanism of their appearance in conjunction with the crystal symmetries of a topological state is provided by the $\mathbf{K}\text{\ensuremath{-}}\mathbf{b}\text{\ensuremath{-}}\mathbf{t}$ rule. Finally, we discuss possible experimentally consequential examples in which the modes are oblivious to the direction of propagation, such as the recently proposed topologically insulating state in electron-doped ${\mathrm{BaBiO}}_{3}$.
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Physical Review B : Condensed Matter - Interplay between electronic topology and crystal symmetry : Dislocation-Line modes in topological band insulators
Physical Review B, 2014Co-Authors: Robertjan Slager, Andrej Mesaros, Vladimir Juricic, Jan ZaanenAbstract:We elucidate the general rule governing the response of Dislocation Lines in three-dimensional topological band insulators. According to this $\mathbf{K}\text{\ensuremath{-}}\mathbf{b}\text{\ensuremath{-}}\mathbf{t}$ rule, the lattice topology, represented by Dislocation Lines oriented in direction $\mathbf{t}$ with Burgers vector $\mathbf{b}$, combines with the electronic-band topology, characterized by the band-inversion momentum ${\mathbf{K}}_{\mathrm{inv}}$, to produce gapless propagating modes when the plane orthogonal to the Dislocation Line features a band inversion with a nontrivial ensuing flux $\ensuremath{\Phi}={\mathbf{K}}_{\mathrm{inv}}\ifmmode\cdot\else\textperiodcentered\fi{}\mathbf{b}(\mathrm{mod}\phantom{\rule{0.16em}{0ex}}2\ensuremath{\pi})$. Although it has already been discovered by Ran et al. [Nat. Phys. 5, 298 (2009)] that Dislocation Lines host propagating modes, the exact mechanism of their appearance in conjunction with the crystal symmetries of a topological state is provided by the $\mathbf{K}\text{\ensuremath{-}}\mathbf{b}\text{\ensuremath{-}}\mathbf{t}$ rule. Finally, we discuss possible experimentally consequential examples in which the modes are oblivious to the direction of propagation, such as the recently proposed topologically insulating state in electron-doped ${\mathrm{BaBiO}}_{3}$.
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the conspiracy of electronic topology and crystal symmetry Dislocation Line modes in topological band insulators
2014Co-Authors: Robertjan Slager, Andrej Mesaros, Vladimir Juricic, Jan ZaanenAbstract:We elucidate the general rule governing the response of Dislocation Lines in three-dimensional topological band insulators. According to this ${\bf K}\text{-}{\bf b}\text{-}{\bf t}$ rule, the lattice topology, represented by Dislocation Lines oriented in direction ${\bf t}$ with Burgers vector ${\bf b}$, combines with the electronic-band topology, characterized by the band-inversion momentum ${\bf K}_{\rm inv}$, to produce gapless propagating modes when the plane orthogonal to the Dislocation Line features a band inversion with a nontrivial ensuing flux $\Phi={\bf K}_{\rm inv}\cdot {\bf b}\,\, ({\rm mod\,\,2\pi})$. Although it has already been discovered by Y. Ran {\it et al.}, Nature Phys. {\bf 5}, 298 (2009), that Dislocation Lines host propagating modes, the exact mechanism of their appearance in conjunction with the crystal symmetries of a topological state is provided by the ${\bf K}\text{-}{\bf b}\text{-}{\bf t}$ rule . Finally, we discuss possible experimentally consequential examples in which the modes are oblivious for the direction of propagation, such as the recently proposed topologically-insulating state in electron-doped BaBiO$_3$.
Robertjan Slager - One of the best experts on this subject based on the ideXlab platform.
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interplay between electronic topology and crystal symmetry Dislocation Line modes in topological band insulators
Physical Review B, 2014Co-Authors: Robertjan Slager, Andrej Mesaros, Vladimir Juricic, Jan ZaanenAbstract:We elucidate the general rule governing the response of Dislocation Lines in three-dimensional topological band insulators. According to this ${\bf K}\text{-}{\bf b}\text{-}{\bf t}$ rule, the lattice topology, represented by Dislocation Lines oriented in direction ${\bf t}$ with Burgers vector ${\bf b}$, combines with the electronic-band topology, characterized by the band-inversion momentum ${\bf K}_{\rm inv}$, to produce gapless propagating modes when the plane orthogonal to the Dislocation Line features a band inversion with a nontrivial ensuing flux $\Phi={\bf K}_{\rm inv}\cdot {\bf b}\,\, ({\rm mod\,\,2\pi})$. Although it has already been discovered by Y. Ran {\it et al.}, Nature Phys. {\bf 5}, 298 (2009), that Dislocation Lines host propagating modes, the exact mechanism of their appearance in conjunction with the crystal symmetries of a topological state is provided by the ${\bf K}\text{-}{\bf b}\text{-}{\bf t}$ rule . Finally, we discuss possible experimentally consequential examples in which the modes are oblivious for the direction of propagation, such as the recently proposed topologically-insulating state in electron-doped BaBiO$_3$.
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interplay between electronic topology and crystal symmetry Dislocation Line modes in topological band insulators
Physical Review B, 2014Co-Authors: Robertjan Slager, Andrej Mesaros, Vladimir Juricic, Jan ZaanenAbstract:We elucidate the general rule governing the response of Dislocation Lines in three-dimensional topological band insulators. According to this $\mathbf{K}\text{\ensuremath{-}}\mathbf{b}\text{\ensuremath{-}}\mathbf{t}$ rule, the lattice topology, represented by Dislocation Lines oriented in direction $\mathbf{t}$ with Burgers vector $\mathbf{b}$, combines with the electronic-band topology, characterized by the band-inversion momentum ${\mathbf{K}}_{\mathrm{inv}}$, to produce gapless propagating modes when the plane orthogonal to the Dislocation Line features a band inversion with a nontrivial ensuing flux $\ensuremath{\Phi}={\mathbf{K}}_{\mathrm{inv}}\ifmmode\cdot\else\textperiodcentered\fi{}\mathbf{b}(\mathrm{mod}\phantom{\rule{0.16em}{0ex}}2\ensuremath{\pi})$. Although it has already been discovered by Ran et al. [Nat. Phys. 5, 298 (2009)] that Dislocation Lines host propagating modes, the exact mechanism of their appearance in conjunction with the crystal symmetries of a topological state is provided by the $\mathbf{K}\text{\ensuremath{-}}\mathbf{b}\text{\ensuremath{-}}\mathbf{t}$ rule. Finally, we discuss possible experimentally consequential examples in which the modes are oblivious to the direction of propagation, such as the recently proposed topologically insulating state in electron-doped ${\mathrm{BaBiO}}_{3}$.
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Physical Review B : Condensed Matter - Interplay between electronic topology and crystal symmetry : Dislocation-Line modes in topological band insulators
Physical Review B, 2014Co-Authors: Robertjan Slager, Andrej Mesaros, Vladimir Juricic, Jan ZaanenAbstract:We elucidate the general rule governing the response of Dislocation Lines in three-dimensional topological band insulators. According to this $\mathbf{K}\text{\ensuremath{-}}\mathbf{b}\text{\ensuremath{-}}\mathbf{t}$ rule, the lattice topology, represented by Dislocation Lines oriented in direction $\mathbf{t}$ with Burgers vector $\mathbf{b}$, combines with the electronic-band topology, characterized by the band-inversion momentum ${\mathbf{K}}_{\mathrm{inv}}$, to produce gapless propagating modes when the plane orthogonal to the Dislocation Line features a band inversion with a nontrivial ensuing flux $\ensuremath{\Phi}={\mathbf{K}}_{\mathrm{inv}}\ifmmode\cdot\else\textperiodcentered\fi{}\mathbf{b}(\mathrm{mod}\phantom{\rule{0.16em}{0ex}}2\ensuremath{\pi})$. Although it has already been discovered by Ran et al. [Nat. Phys. 5, 298 (2009)] that Dislocation Lines host propagating modes, the exact mechanism of their appearance in conjunction with the crystal symmetries of a topological state is provided by the $\mathbf{K}\text{\ensuremath{-}}\mathbf{b}\text{\ensuremath{-}}\mathbf{t}$ rule. Finally, we discuss possible experimentally consequential examples in which the modes are oblivious to the direction of propagation, such as the recently proposed topologically insulating state in electron-doped ${\mathrm{BaBiO}}_{3}$.
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the conspiracy of electronic topology and crystal symmetry Dislocation Line modes in topological band insulators
2014Co-Authors: Robertjan Slager, Andrej Mesaros, Vladimir Juricic, Jan ZaanenAbstract:We elucidate the general rule governing the response of Dislocation Lines in three-dimensional topological band insulators. According to this ${\bf K}\text{-}{\bf b}\text{-}{\bf t}$ rule, the lattice topology, represented by Dislocation Lines oriented in direction ${\bf t}$ with Burgers vector ${\bf b}$, combines with the electronic-band topology, characterized by the band-inversion momentum ${\bf K}_{\rm inv}$, to produce gapless propagating modes when the plane orthogonal to the Dislocation Line features a band inversion with a nontrivial ensuing flux $\Phi={\bf K}_{\rm inv}\cdot {\bf b}\,\, ({\rm mod\,\,2\pi})$. Although it has already been discovered by Y. Ran {\it et al.}, Nature Phys. {\bf 5}, 298 (2009), that Dislocation Lines host propagating modes, the exact mechanism of their appearance in conjunction with the crystal symmetries of a topological state is provided by the ${\bf K}\text{-}{\bf b}\text{-}{\bf t}$ rule . Finally, we discuss possible experimentally consequential examples in which the modes are oblivious for the direction of propagation, such as the recently proposed topologically-insulating state in electron-doped BaBiO$_3$.
Vladimir Juricic - One of the best experts on this subject based on the ideXlab platform.
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interplay between electronic topology and crystal symmetry Dislocation Line modes in topological band insulators
Physical Review B, 2014Co-Authors: Robertjan Slager, Andrej Mesaros, Vladimir Juricic, Jan ZaanenAbstract:We elucidate the general rule governing the response of Dislocation Lines in three-dimensional topological band insulators. According to this ${\bf K}\text{-}{\bf b}\text{-}{\bf t}$ rule, the lattice topology, represented by Dislocation Lines oriented in direction ${\bf t}$ with Burgers vector ${\bf b}$, combines with the electronic-band topology, characterized by the band-inversion momentum ${\bf K}_{\rm inv}$, to produce gapless propagating modes when the plane orthogonal to the Dislocation Line features a band inversion with a nontrivial ensuing flux $\Phi={\bf K}_{\rm inv}\cdot {\bf b}\,\, ({\rm mod\,\,2\pi})$. Although it has already been discovered by Y. Ran {\it et al.}, Nature Phys. {\bf 5}, 298 (2009), that Dislocation Lines host propagating modes, the exact mechanism of their appearance in conjunction with the crystal symmetries of a topological state is provided by the ${\bf K}\text{-}{\bf b}\text{-}{\bf t}$ rule . Finally, we discuss possible experimentally consequential examples in which the modes are oblivious for the direction of propagation, such as the recently proposed topologically-insulating state in electron-doped BaBiO$_3$.
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interplay between electronic topology and crystal symmetry Dislocation Line modes in topological band insulators
Physical Review B, 2014Co-Authors: Robertjan Slager, Andrej Mesaros, Vladimir Juricic, Jan ZaanenAbstract:We elucidate the general rule governing the response of Dislocation Lines in three-dimensional topological band insulators. According to this $\mathbf{K}\text{\ensuremath{-}}\mathbf{b}\text{\ensuremath{-}}\mathbf{t}$ rule, the lattice topology, represented by Dislocation Lines oriented in direction $\mathbf{t}$ with Burgers vector $\mathbf{b}$, combines with the electronic-band topology, characterized by the band-inversion momentum ${\mathbf{K}}_{\mathrm{inv}}$, to produce gapless propagating modes when the plane orthogonal to the Dislocation Line features a band inversion with a nontrivial ensuing flux $\ensuremath{\Phi}={\mathbf{K}}_{\mathrm{inv}}\ifmmode\cdot\else\textperiodcentered\fi{}\mathbf{b}(\mathrm{mod}\phantom{\rule{0.16em}{0ex}}2\ensuremath{\pi})$. Although it has already been discovered by Ran et al. [Nat. Phys. 5, 298 (2009)] that Dislocation Lines host propagating modes, the exact mechanism of their appearance in conjunction with the crystal symmetries of a topological state is provided by the $\mathbf{K}\text{\ensuremath{-}}\mathbf{b}\text{\ensuremath{-}}\mathbf{t}$ rule. Finally, we discuss possible experimentally consequential examples in which the modes are oblivious to the direction of propagation, such as the recently proposed topologically insulating state in electron-doped ${\mathrm{BaBiO}}_{3}$.
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Physical Review B : Condensed Matter - Interplay between electronic topology and crystal symmetry : Dislocation-Line modes in topological band insulators
Physical Review B, 2014Co-Authors: Robertjan Slager, Andrej Mesaros, Vladimir Juricic, Jan ZaanenAbstract:We elucidate the general rule governing the response of Dislocation Lines in three-dimensional topological band insulators. According to this $\mathbf{K}\text{\ensuremath{-}}\mathbf{b}\text{\ensuremath{-}}\mathbf{t}$ rule, the lattice topology, represented by Dislocation Lines oriented in direction $\mathbf{t}$ with Burgers vector $\mathbf{b}$, combines with the electronic-band topology, characterized by the band-inversion momentum ${\mathbf{K}}_{\mathrm{inv}}$, to produce gapless propagating modes when the plane orthogonal to the Dislocation Line features a band inversion with a nontrivial ensuing flux $\ensuremath{\Phi}={\mathbf{K}}_{\mathrm{inv}}\ifmmode\cdot\else\textperiodcentered\fi{}\mathbf{b}(\mathrm{mod}\phantom{\rule{0.16em}{0ex}}2\ensuremath{\pi})$. Although it has already been discovered by Ran et al. [Nat. Phys. 5, 298 (2009)] that Dislocation Lines host propagating modes, the exact mechanism of their appearance in conjunction with the crystal symmetries of a topological state is provided by the $\mathbf{K}\text{\ensuremath{-}}\mathbf{b}\text{\ensuremath{-}}\mathbf{t}$ rule. Finally, we discuss possible experimentally consequential examples in which the modes are oblivious to the direction of propagation, such as the recently proposed topologically insulating state in electron-doped ${\mathrm{BaBiO}}_{3}$.
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the conspiracy of electronic topology and crystal symmetry Dislocation Line modes in topological band insulators
2014Co-Authors: Robertjan Slager, Andrej Mesaros, Vladimir Juricic, Jan ZaanenAbstract:We elucidate the general rule governing the response of Dislocation Lines in three-dimensional topological band insulators. According to this ${\bf K}\text{-}{\bf b}\text{-}{\bf t}$ rule, the lattice topology, represented by Dislocation Lines oriented in direction ${\bf t}$ with Burgers vector ${\bf b}$, combines with the electronic-band topology, characterized by the band-inversion momentum ${\bf K}_{\rm inv}$, to produce gapless propagating modes when the plane orthogonal to the Dislocation Line features a band inversion with a nontrivial ensuing flux $\Phi={\bf K}_{\rm inv}\cdot {\bf b}\,\, ({\rm mod\,\,2\pi})$. Although it has already been discovered by Y. Ran {\it et al.}, Nature Phys. {\bf 5}, 298 (2009), that Dislocation Lines host propagating modes, the exact mechanism of their appearance in conjunction with the crystal symmetries of a topological state is provided by the ${\bf K}\text{-}{\bf b}\text{-}{\bf t}$ rule . Finally, we discuss possible experimentally consequential examples in which the modes are oblivious for the direction of propagation, such as the recently proposed topologically-insulating state in electron-doped BaBiO$_3$.
Andrej Mesaros - One of the best experts on this subject based on the ideXlab platform.
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interplay between electronic topology and crystal symmetry Dislocation Line modes in topological band insulators
Physical Review B, 2014Co-Authors: Robertjan Slager, Andrej Mesaros, Vladimir Juricic, Jan ZaanenAbstract:We elucidate the general rule governing the response of Dislocation Lines in three-dimensional topological band insulators. According to this ${\bf K}\text{-}{\bf b}\text{-}{\bf t}$ rule, the lattice topology, represented by Dislocation Lines oriented in direction ${\bf t}$ with Burgers vector ${\bf b}$, combines with the electronic-band topology, characterized by the band-inversion momentum ${\bf K}_{\rm inv}$, to produce gapless propagating modes when the plane orthogonal to the Dislocation Line features a band inversion with a nontrivial ensuing flux $\Phi={\bf K}_{\rm inv}\cdot {\bf b}\,\, ({\rm mod\,\,2\pi})$. Although it has already been discovered by Y. Ran {\it et al.}, Nature Phys. {\bf 5}, 298 (2009), that Dislocation Lines host propagating modes, the exact mechanism of their appearance in conjunction with the crystal symmetries of a topological state is provided by the ${\bf K}\text{-}{\bf b}\text{-}{\bf t}$ rule . Finally, we discuss possible experimentally consequential examples in which the modes are oblivious for the direction of propagation, such as the recently proposed topologically-insulating state in electron-doped BaBiO$_3$.
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interplay between electronic topology and crystal symmetry Dislocation Line modes in topological band insulators
Physical Review B, 2014Co-Authors: Robertjan Slager, Andrej Mesaros, Vladimir Juricic, Jan ZaanenAbstract:We elucidate the general rule governing the response of Dislocation Lines in three-dimensional topological band insulators. According to this $\mathbf{K}\text{\ensuremath{-}}\mathbf{b}\text{\ensuremath{-}}\mathbf{t}$ rule, the lattice topology, represented by Dislocation Lines oriented in direction $\mathbf{t}$ with Burgers vector $\mathbf{b}$, combines with the electronic-band topology, characterized by the band-inversion momentum ${\mathbf{K}}_{\mathrm{inv}}$, to produce gapless propagating modes when the plane orthogonal to the Dislocation Line features a band inversion with a nontrivial ensuing flux $\ensuremath{\Phi}={\mathbf{K}}_{\mathrm{inv}}\ifmmode\cdot\else\textperiodcentered\fi{}\mathbf{b}(\mathrm{mod}\phantom{\rule{0.16em}{0ex}}2\ensuremath{\pi})$. Although it has already been discovered by Ran et al. [Nat. Phys. 5, 298 (2009)] that Dislocation Lines host propagating modes, the exact mechanism of their appearance in conjunction with the crystal symmetries of a topological state is provided by the $\mathbf{K}\text{\ensuremath{-}}\mathbf{b}\text{\ensuremath{-}}\mathbf{t}$ rule. Finally, we discuss possible experimentally consequential examples in which the modes are oblivious to the direction of propagation, such as the recently proposed topologically insulating state in electron-doped ${\mathrm{BaBiO}}_{3}$.
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Physical Review B : Condensed Matter - Interplay between electronic topology and crystal symmetry : Dislocation-Line modes in topological band insulators
Physical Review B, 2014Co-Authors: Robertjan Slager, Andrej Mesaros, Vladimir Juricic, Jan ZaanenAbstract:We elucidate the general rule governing the response of Dislocation Lines in three-dimensional topological band insulators. According to this $\mathbf{K}\text{\ensuremath{-}}\mathbf{b}\text{\ensuremath{-}}\mathbf{t}$ rule, the lattice topology, represented by Dislocation Lines oriented in direction $\mathbf{t}$ with Burgers vector $\mathbf{b}$, combines with the electronic-band topology, characterized by the band-inversion momentum ${\mathbf{K}}_{\mathrm{inv}}$, to produce gapless propagating modes when the plane orthogonal to the Dislocation Line features a band inversion with a nontrivial ensuing flux $\ensuremath{\Phi}={\mathbf{K}}_{\mathrm{inv}}\ifmmode\cdot\else\textperiodcentered\fi{}\mathbf{b}(\mathrm{mod}\phantom{\rule{0.16em}{0ex}}2\ensuremath{\pi})$. Although it has already been discovered by Ran et al. [Nat. Phys. 5, 298 (2009)] that Dislocation Lines host propagating modes, the exact mechanism of their appearance in conjunction with the crystal symmetries of a topological state is provided by the $\mathbf{K}\text{\ensuremath{-}}\mathbf{b}\text{\ensuremath{-}}\mathbf{t}$ rule. Finally, we discuss possible experimentally consequential examples in which the modes are oblivious to the direction of propagation, such as the recently proposed topologically insulating state in electron-doped ${\mathrm{BaBiO}}_{3}$.
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the conspiracy of electronic topology and crystal symmetry Dislocation Line modes in topological band insulators
2014Co-Authors: Robertjan Slager, Andrej Mesaros, Vladimir Juricic, Jan ZaanenAbstract:We elucidate the general rule governing the response of Dislocation Lines in three-dimensional topological band insulators. According to this ${\bf K}\text{-}{\bf b}\text{-}{\bf t}$ rule, the lattice topology, represented by Dislocation Lines oriented in direction ${\bf t}$ with Burgers vector ${\bf b}$, combines with the electronic-band topology, characterized by the band-inversion momentum ${\bf K}_{\rm inv}$, to produce gapless propagating modes when the plane orthogonal to the Dislocation Line features a band inversion with a nontrivial ensuing flux $\Phi={\bf K}_{\rm inv}\cdot {\bf b}\,\, ({\rm mod\,\,2\pi})$. Although it has already been discovered by Y. Ran {\it et al.}, Nature Phys. {\bf 5}, 298 (2009), that Dislocation Lines host propagating modes, the exact mechanism of their appearance in conjunction with the crystal symmetries of a topological state is provided by the ${\bf K}\text{-}{\bf b}\text{-}{\bf t}$ rule . Finally, we discuss possible experimentally consequential examples in which the modes are oblivious for the direction of propagation, such as the recently proposed topologically-insulating state in electron-doped BaBiO$_3$.
Roland Wiesendanger - One of the best experts on this subject based on the ideXlab platform.
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Tailoring noncolLinear magnetism by misfit Dislocation Lines
Physical Review B, 2016Co-Authors: Aurore Finco, Pin-jui Hsu, André Kubetzka, Kirsten Von Bergmann, Roland WiesendangerAbstract:The large epitaxial stress induced by the misfit between a triple atomic layer Fe film and an Ir(111) substrate is relieved by the formation of a dense Dislocation Line network. Spin-polarized scanning tunneling microscopy investigations show that the strain is locally varying within the Fe film and that this variation affects the magnetic state of the system. Two types of Dislocation Line regions can be distinguished and both exhibit spin spirals with strain-dependent periods (ranging from 3 to $10\phantom{\rule{4pt}{0ex}}\mathrm{nm})$. Using a simple micromagnetic model, we attribute the changes of the period of the spin spirals to variations of the effective exchange coupling in the magnetic film. This assumption is supported by the observed dependence of the saturation magnetic field on the period of the zero-field spin spiral. Moreover, magnetic skyrmions appear in an external magnetic field only in one type of Dislocation Line area, which we impute to the different pinning properties of the Dislocation Lines.
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Direct observation of vortices trapped at stacking fault Dislocations inBi2Sr2CaCu2O8by a low-temperature magnetic force microscope
Physical Review B, 2004Co-Authors: Z. G. Khim, Dong Ho Kim, Alexander Schwarz, Marcus Liebmann, Roland WiesendangerAbstract:We have studied the vortex structure in Bi 2 Sr 2 CaCu 2 O 8 single crystal with low-density artificial columnar defects formed by the irradiation of 1.3 GeV uranium ions by using a low-temperature magnetic force microscope.We observed that some of the topographic steps are acting as strong Line pinning centers for magnetic vortices in this material. We confirmed that these Line steps correspond to the stacking fault Dislocations. The stacking fault Dislocation showed a direction dependent pinning behavior due to the Line-shape geometry of the Dislocation. The movement of the vortices across the Dislocation Line is impeded, while the movement along the Dislocation Line is quite free.