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D A Bonn - One of the best experts on this subject based on the ideXlab platform.
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anisotropy of the seebeck coefficient in the Cuprate superconductor yba 2 cu 3 o y fermi surface reconstruction by bidirectional charge order
Physical Review X, 2017Co-Authors: O Cyrchoiniere, B. Michon, S. Badoux, G Grissonnanche, S A A Afshar, S Fortier, David Leboeuf, D Graf, James Day, D A BonnAbstract:Reconstruction of the Fermi surface in the Cuprate YBa${}_{2}$Cu${}_{3}$O${}_{y}$ is thought to be caused by one of two types of charge-density waves. Identifying which one is responsible could help researchers understand the high-temperature superconductivity that Cuprates exhibit. New experiments show that short-range two-dimensional waves lead to Fermi surface reconstruction.
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orbital symmetry of charge density wave order in la1 875ba0 125cuo4 and yba2cu3o6 67
Nature Materials, 2016Co-Authors: A J Achkar, Ratri Sutarto, Ruixing Liang, D A Bonn, Christopher Mcmahon, M Zwiebler, M Hucker, W N HardyAbstract:Recent theories of charge-density-wave (CDW) order in high-temperature superconductors have predicted a primarily d CDW orbital symmetry. Here, we report on the orbital symmetry of CDW order in the canonical Cuprate superconductors La1.875Ba0.125CuO4 (LBCO) and YBa2Cu3O6.67 (YBCO), using resonant soft X-ray scattering and a model mapped to the CDW orbital symmetry. From measurements sensitive to the O sublattice, we conclude that LBCO has predominantly s' CDW orbital symmetry, in contrast to the d orbital symmetry recently reported in other Cuprates. Furthermore, we show for YBCO that the CDW orbital symmetry differs along the a and b crystal axes and that these both differ from LBCO. This work highlights CDW orbital symmetry as an additional key property that distinguishes the different Cuprate families. We discuss how the CDW symmetry may be related to the '1/8-anomaly' and to static spin ordering.
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orbital symmetry of charge density wave order in la1 875ba0 125cuo4 and yba2cu3o6 67
arXiv: Superconductivity, 2014Co-Authors: A J Achkar, Ratri Sutarto, Ruixing Liang, D A Bonn, Christopher Mcmahon, M Zwiebler, M Hucker, W N HardyAbstract:Recent theories of charge density wave (CDW) order in high temperature superconductors have predicted a primarily d CDW orbital symmetry. Here, we report on the orbital symmetry of CDW order in the canonical Cuprate superconductors La1.875Ba0.125CuO4 (LBCO) and YBa2Cu3O6.67 (YBCO), using resonant soft x-ray scattering and a model mapped to the CDW orbital symmetry. From measurements sensitive to the O sublattice, we conclude that LBCO has predominantly s' CDW orbital symmetry, in contrast to the d orbital symmetry recently reported in other Cuprates. Additionally, we show for YBCO that the CDW orbital symmetry differs along the a and b crystal axes and that these both differ from LBCO. This work highlights CDW orbital symmetry as an additional key property that distinguishes the different Cuprate families. We discuss how the CDW symmetry may be related to the "1/8--anomaly" and to static spin ordering.
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fermi surface reconstruction by stripe order in Cuprate superconductors
Nature Communications, 2011Co-Authors: F Laliberte, J Chang, N Doironleyraud, Elena Hassinger, R Daou, M Rondeau, B J Ramshaw, Ruixing Liang, D A BonnAbstract:The origin of pairing in a superconductor resides in the underlying normal state. In the Cuprate high-temperature superconductor YBa(2)Cu(3)O(y) (YBCO), application of a magnetic field to suppress superconductivity reveals a ground state that appears to break the translational symmetry of the lattice, pointing to some density-wave order. Here we use a comparative study of thermoelectric transport in the Cuprates YBCO and La(1.8-x)Eu(0.2)Sr(x)CuO(4) (Eu-LSCO) to show that the two materials exhibit the same process of Fermi-surface reconstruction as a function of temperature and doping. The fact that in Eu-LSCO this reconstruction coexists with spin and charge modulations that break translational symmetry shows that stripe order is the generic non-superconducting ground state of hole-doped Cuprates.
Ruixing Liang - One of the best experts on this subject based on the ideXlab platform.
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orbital symmetry of charge density wave order in la1 875ba0 125cuo4 and yba2cu3o6 67
Nature Materials, 2016Co-Authors: A J Achkar, Ratri Sutarto, Ruixing Liang, D A Bonn, Christopher Mcmahon, M Zwiebler, M Hucker, W N HardyAbstract:Recent theories of charge-density-wave (CDW) order in high-temperature superconductors have predicted a primarily d CDW orbital symmetry. Here, we report on the orbital symmetry of CDW order in the canonical Cuprate superconductors La1.875Ba0.125CuO4 (LBCO) and YBa2Cu3O6.67 (YBCO), using resonant soft X-ray scattering and a model mapped to the CDW orbital symmetry. From measurements sensitive to the O sublattice, we conclude that LBCO has predominantly s' CDW orbital symmetry, in contrast to the d orbital symmetry recently reported in other Cuprates. Furthermore, we show for YBCO that the CDW orbital symmetry differs along the a and b crystal axes and that these both differ from LBCO. This work highlights CDW orbital symmetry as an additional key property that distinguishes the different Cuprate families. We discuss how the CDW symmetry may be related to the '1/8-anomaly' and to static spin ordering.
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orbital symmetry of charge density wave order in la1 875ba0 125cuo4 and yba2cu3o6 67
arXiv: Superconductivity, 2014Co-Authors: A J Achkar, Ratri Sutarto, Ruixing Liang, D A Bonn, Christopher Mcmahon, M Zwiebler, M Hucker, W N HardyAbstract:Recent theories of charge density wave (CDW) order in high temperature superconductors have predicted a primarily d CDW orbital symmetry. Here, we report on the orbital symmetry of CDW order in the canonical Cuprate superconductors La1.875Ba0.125CuO4 (LBCO) and YBa2Cu3O6.67 (YBCO), using resonant soft x-ray scattering and a model mapped to the CDW orbital symmetry. From measurements sensitive to the O sublattice, we conclude that LBCO has predominantly s' CDW orbital symmetry, in contrast to the d orbital symmetry recently reported in other Cuprates. Additionally, we show for YBCO that the CDW orbital symmetry differs along the a and b crystal axes and that these both differ from LBCO. This work highlights CDW orbital symmetry as an additional key property that distinguishes the different Cuprate families. We discuss how the CDW symmetry may be related to the "1/8--anomaly" and to static spin ordering.
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fermi surface reconstruction by stripe order in Cuprate superconductors
Nature Communications, 2011Co-Authors: F Laliberte, J Chang, N Doironleyraud, Elena Hassinger, R Daou, M Rondeau, B J Ramshaw, Ruixing Liang, D A BonnAbstract:The origin of pairing in a superconductor resides in the underlying normal state. In the Cuprate high-temperature superconductor YBa(2)Cu(3)O(y) (YBCO), application of a magnetic field to suppress superconductivity reveals a ground state that appears to break the translational symmetry of the lattice, pointing to some density-wave order. Here we use a comparative study of thermoelectric transport in the Cuprates YBCO and La(1.8-x)Eu(0.2)Sr(x)CuO(4) (Eu-LSCO) to show that the two materials exhibit the same process of Fermi-surface reconstruction as a function of temperature and doping. The fact that in Eu-LSCO this reconstruction coexists with spin and charge modulations that break translational symmetry shows that stripe order is the generic non-superconducting ground state of hole-doped Cuprates.
Eduardo H Da Silva Neto - One of the best experts on this subject based on the ideXlab platform.
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coupling between dynamic magnetic and charge order correlations in the Cuprate superconductor nd2 xcexcuo4
Physical Review B, 2018Co-Authors: Marzio Minola, Eduardo H Da Silva Neto, M Bluschke, W Tabis, D UnruhAbstract:Charge order has now been observed in several Cuprate high-temperature superconductors. We report a resonant inelastic x-ray scattering experiment on the electron-doped Cuprate ${\mathrm{Nd}}_{2\ensuremath{-}x}{\mathrm{Ce}}_{x}\mathrm{Cu}{\mathrm{O}}_{4}$ that demonstrates the existence of dynamic correlations at the charge-order wave vector. Upon cooling we observe a softening in the electronic response, which has been predicted to occur for a $d$-wave charge order in electron-doped Cuprates. At low temperatures, the energy range of these excitations coincides with that of the dispersive magnetic modes known as paramagnons. Furthermore, measurements where the polarization of the scattered photon is resolved indicate that the dynamic response at the charge-order wave vector primarily involves spin-flip excitations. Overall, our findings indicate a coupling between dynamic magnetic and charge-order correlations in the Cuprates.
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doping dependent charge order correlations in electron doped Cuprates
Science Advances, 2016Co-Authors: Eduardo H Da Silva Neto, Marzio Minola, Ratri Sutarto, Biqiong Yu, E Schierle, Fabio Boschini, M Zonno, M Bluschke, J S HigginsAbstract:Understanding the interplay between charge order (CO) and other phenomena (for example, pseudogap, antiferromagnetism, and superconductivity) is one of the central questions in the Cuprate high-temperature superconductors. The discovery that similar forms of CO exist in both hole- and electron-doped Cuprates opened a path to determine what subset of the CO phenomenology is universal to all the Cuprates. We use resonant x-ray scattering to measure the CO correlations in electron-doped Cuprates (La2−xCexCuO4 and Nd2−xCexCuO4) and their relationship to antiferromagnetism, pseudogap, and superconductivity. Detailed measurements of Nd2−xCexCuO4 show that CO is present in the x = 0.059 to 0.166 range and that its doping-dependent wave vector is consistent with the separation between straight segments of the Fermi surface. The CO onset temperature is highest between x = 0.106 and 0.166 but decreases at lower doping levels, indicating that it is not tied to the appearance of antiferromagnetic correlations or the pseudogap. Near optimal doping, where the CO wave vector is also consistent with a previously observed phonon anomaly, measurements of the CO below and above the superconducting transition temperature, or in a magnetic field, show that the CO is insensitive to superconductivity. Overall, these findings indicate that, although verified in the electron-doped Cuprates, material-dependent details determine whether the CO correlations acquire sufficient strength to compete for the ground state of the Cuprates.
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charge ordering in the electron doped superconductor nd2 xcexcuo4
Science, 2015Co-Authors: Eduardo H Da Silva Neto, R L Greene, Riccardo Comin, Ratri Sutarto, Yeping Jiang, George A Sawatzky, F. He, Andrea DamascelliAbstract:In Cuprate high-temperature superconductors, an antiferromagnetic Mott insulating state can be destabilized toward unconventional superconductivity by either hole or electron doping. In hole-doped (p-type) Cuprates, a charge ordering (CO) instability competes with superconductivity inside the pseudogap state. We report resonant x-ray scattering measurements that demonstrate the presence of charge ordering in the n-type Cuprate Nd 2– x Ce x CuO 4 near optimal doping. We find that the CO in Nd 2– x Ce x CuO 4 occurs with similar periodicity, and along the same direction, as in p-type Cuprates. However, in contrast to the latter, the CO onset in Nd 2– x Ce x CuO 4 is higher than the pseudogap temperature, and is in the temperature range where antiferromagnetic fluctuations are first detected. Our discovery opens a parallel path to the study of CO and its relationship to antiferromagnetism and superconductivity.
O Cyrchoiniere - One of the best experts on this subject based on the ideXlab platform.
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anisotropy of the seebeck coefficient in the Cuprate superconductor yba 2 cu 3 o y fermi surface reconstruction by bidirectional charge order
Physical Review X, 2017Co-Authors: O Cyrchoiniere, B. Michon, S. Badoux, G Grissonnanche, S A A Afshar, S Fortier, David Leboeuf, D Graf, James Day, D A BonnAbstract:Reconstruction of the Fermi surface in the Cuprate YBa${}_{2}$Cu${}_{3}$O${}_{y}$ is thought to be caused by one of two types of charge-density waves. Identifying which one is responsible could help researchers understand the high-temperature superconductivity that Cuprates exhibit. New experiments show that short-range two-dimensional waves lead to Fermi surface reconstruction.
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wiedemann franz law in the underdoped Cuprate superconductor yba 2 cu 3 o y
Physical Review B, 2016Co-Authors: G Grissonnanche, B. Michon, Francis Laliberte, Sophie Dufourbeausejour, Marcin Matusiak, Sven Badoux, Fazel Tafti, Alexis Riopel, O CyrchoiniereAbstract:The authors measured the electrical and thermal Hall conductivities of YBa${}_{2}$Cu${}_{3}$O${}_{y}$ in high magnetic fields to investigate the nature of the nonsuperconducting ground state in underdoped Cuprates. They found that the Wiedemann-Franz law is obeyed in the $T$=0 limit as soon as the vortex solid melts at high field. This shows that there is no vortex liquid at $T$=0 and it imposes a clear constraint on the nature of excitations in the enigmatic pseudogap phase of Cuprate superconductors.
K. Fujita - One of the best experts on this subject based on the ideXlab platform.
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atomic scale electronic structure of the Cuprate pair density wave state coexisting with superconductivity
Proceedings of the National Academy of Sciences of the United States of America, 2020Co-Authors: Hiroshi Eisaki, Mohammad Hamidian, K. Fujita, S Uchida, Peayush Choubey, Sang Hyun Joo, Stephen D Edkins, A P Mackenzie, Jinho LeeAbstract:The defining characteristic of hole-doped Cuprates is d-wave high temperature superconductivity. However, intense theoretical interest is now focused on whether a pair density wave state (PDW) could coexist with Cuprate superconductivity [D. F. Agterberg et al., Annu. Rev. Condens. Matter Phys. 11, 231 (2020)]. Here, we use a strong-coupling mean-field theory of Cuprates, to model the atomic-scale electronic structure of an eight-unit-cell periodic, d-symmetry form factor, pair density wave (PDW) state coexisting with d-wave superconductivity (DSC). From this PDW + DSC model, the atomically resolved density of Bogoliubov quasiparticle states N r , E is predicted at the terminal BiO surface of Bi2Sr2CaCu2O8 and compared with high-precision electronic visualization experiments using spectroscopic imaging scanning tunneling microscopy (STM). The PDW + DSC model predictions include the intraunit-cell structure and periodic modulations of N r , E , the modulations of the coherence peak energy Δ p r , and the characteristics of Bogoliubov quasiparticle interference in scattering-wavevector space q - space . Consistency between all these predictions and the corresponding experiments indicates that lightly hole-doped Bi2Sr2CaCu2O8 does contain a PDW + DSC state. Moreover, in the model the PDW + DSC state becomes unstable to a pure DSC state at a critical hole density p*, with empirically equivalent phenomena occurring in the experiments. All these results are consistent with a picture in which the Cuprate translational symmetry-breaking state is a PDW, the observed charge modulations are its consequence, the antinodal pseudogap is that of the PDW state, and the Cuprate critical point at p* ≈ 19% occurs due to disappearance of this PDW.
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atomic scale electronic structure of the Cuprate pair density wave state coexisting with superconductivity
arXiv: Superconductivity, 2020Co-Authors: Hiroshi Eisaki, Mohammad Hamidian, K. Fujita, S Uchida, Peayush Choubey, Sang Hyun Joo, Stephen D Edkins, A P Mackenzie, Jinho LeeAbstract:The defining characteristic of hole-doped Cuprates is $d$-wave high temperature superconductivity. However, intense theoretical interest is now focused on whether a pair density wave state (PDW) could coexist with Cuprate superconductivity (D. F. Agterberg et al., Annual Review of Condensed Matter Physics 11, 231 (2020)). Here, we use a strong-coupling mean-field theory of Cuprates, to model the atomic-scale electronic structure of an eight-unit-cell periodic, $d$-symmetry form factor, pair density wave (PDW) state coexisting with $d$-wave superconductivity (DSC). From this PDW+DSC model, the atomically-resolved density of Bogoliubov quasiparticle states N(r,E) is predicted at the terminal BiO surface of Bi$_2$Sr$_2$CaCu$_2$O$_8$ and compared with high-precision electronic visualization experiments using spectroscopic imaging STM. The PDW+DSC model predictions include the intra-unit-cell structure and periodic modulations of N(r,E), the modulations of the coherence peak energy $\Delta_p$ (r), and the characteristics of Bogoliubov quasiparticle interference in scattering-wavevector space (q-space). Consistency between all these predictions and the corresponding experiments indicates that lightly hole-doped Bi$_2$Sr$_2$CaCu$_2$O$_8$ does contain a PDW+DSC state. Moreover, in the model the PDW+DSC state becomes unstable to a pure DSC state at a critical hole density p*, with empirically equivalent phenomena occurring in the experiments. All these results are consistent with a picture in which the Cuprate translational symmetry breaking state is a PDW, the observed charge modulations are its consequence, the antinodal pseudogap is that of the PDW state, and the Cuprate critical point at p* ~ 19% occurs due to disappearance of this PDW.
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direct phase sensitive identification of a d form factor density wave in underdoped Cuprates
Proceedings of the National Academy of Sciences of the United States of America, 2014Co-Authors: Mohammad Hamidian, Stephen Edkins, Masaki Azuma, Yasuhiro Kohsaka, K. Fujita, Mikio TakanoAbstract:The identity of the fundamental broken symmetry (if any) in the underdoped Cuprates is unresolved. However, evidence has been accumulating that this state may be an unconventional density wave. Here we carry out site-specific measurements within each CuO2 unit cell, segregating the results into three separate electronic structure images containing only the Cu sites [Cu(r)] and only the x/y axis O sites [Ox(r) and Oy(r)]. Phase-resolved Fourier analysis reveals directly that the modulations in the Ox(r) and Oy(r) sublattice images consistently exhibit a relative phase of π. We confirm this discovery on two highly distinct Cuprate compounds, ruling out tunnel matrix-element and materials-specific systematics. These observations demonstrate by direct sublattice phase-resolved visualization that the density wave found in underdoped Cuprates consists of modulations of the intraunit-cell states that exhibit a predominantly d-symmetry form factor.
