The Experts below are selected from a list of 279 Experts worldwide ranked by ideXlab platform
Zhizhi Zhang - One of the best experts on this subject based on the ideXlab platform.
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spin wave frequency division multiplexing in an yttrium iron garnet microstripe magnetized by Inhomogeneous Field
Applied Physics Letters, 2019Co-Authors: Zhizhi Zhang, Michael Vogel, Jose Holanda, Benjamin M Jungfleisch, Yi Li, J Pearson, Ralu Divan, Wei ZhangAbstract:Spin waves are promising candidates for information processing and transmission in a broad frequency range. In the realization of magnonic devices, the frequency related division of the spin waves is a critical function for parallel information processing. In this work, we demonstrate a proof-of-concept spin-wave frequency division multiplexing method by magnetizing a homogeneous magnetic microstripe with an Inhomogeneous Field. The symmetry breaking additional Field is introduced by a Permalloy stripe simply placed in lateral proximity to an yttrium iron garnet waveguide. Spin waves with different frequencies can propagate independently, simultaneously, and separately in space along the shared waveguide. This work demonstrates one potential way for parallel information transmission and processing in magnonics.Spin waves are promising candidates for information processing and transmission in a broad frequency range. In the realization of magnonic devices, the frequency related division of the spin waves is a critical function for parallel information processing. In this work, we demonstrate a proof-of-concept spin-wave frequency division multiplexing method by magnetizing a homogeneous magnetic microstripe with an Inhomogeneous Field. The symmetry breaking additional Field is introduced by a Permalloy stripe simply placed in lateral proximity to an yttrium iron garnet waveguide. Spin waves with different frequencies can propagate independently, simultaneously, and separately in space along the shared waveguide. This work demonstrates one potential way for parallel information transmission and processing in magnonics.
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spin wave frequency division multiplexing in an yttrium iron garnet microstripe magnetized by Inhomogeneous Field
arXiv: Applied Physics, 2019Co-Authors: Zhizhi Zhang, Michael Vogel, Jose Holanda, Benjamin M Jungfleisch, Yi Li, J Pearson, Ralu Divan, Wei Zhang, Axel Hoffmann, Valentyn NovosadAbstract:Spin waves are promising candidates for information processing and transmission in a broad frequency range. In the realization of magnonic devices, the frequency depended division of the spin wave frequencies is a critical function for parallel information processing. In this work, we demonstrate a proof-of-concept spin-wave frequency division multiplexing method by magnetizing a homogenous magnetic microstripe with an Inhomogeneous Field. The symmetry breaking additional Field is introduced by a permalloy stripe simply placed in lateral proximity to the waveguide. Spin waves with different frequencies can propagate independently, simultaneously and separately in space along the shared waveguide. This work brings new potentials for parallel information transmission and processing in magnonics.
Yi Li - One of the best experts on this subject based on the ideXlab platform.
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spin wave frequency division multiplexing in an yttrium iron garnet microstripe magnetized by Inhomogeneous Field
Applied Physics Letters, 2019Co-Authors: Zhizhi Zhang, Michael Vogel, Jose Holanda, Benjamin M Jungfleisch, Yi Li, J Pearson, Ralu Divan, Wei ZhangAbstract:Spin waves are promising candidates for information processing and transmission in a broad frequency range. In the realization of magnonic devices, the frequency related division of the spin waves is a critical function for parallel information processing. In this work, we demonstrate a proof-of-concept spin-wave frequency division multiplexing method by magnetizing a homogeneous magnetic microstripe with an Inhomogeneous Field. The symmetry breaking additional Field is introduced by a Permalloy stripe simply placed in lateral proximity to an yttrium iron garnet waveguide. Spin waves with different frequencies can propagate independently, simultaneously, and separately in space along the shared waveguide. This work demonstrates one potential way for parallel information transmission and processing in magnonics.Spin waves are promising candidates for information processing and transmission in a broad frequency range. In the realization of magnonic devices, the frequency related division of the spin waves is a critical function for parallel information processing. In this work, we demonstrate a proof-of-concept spin-wave frequency division multiplexing method by magnetizing a homogeneous magnetic microstripe with an Inhomogeneous Field. The symmetry breaking additional Field is introduced by a Permalloy stripe simply placed in lateral proximity to an yttrium iron garnet waveguide. Spin waves with different frequencies can propagate independently, simultaneously, and separately in space along the shared waveguide. This work demonstrates one potential way for parallel information transmission and processing in magnonics.
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spin wave frequency division multiplexing in an yttrium iron garnet microstripe magnetized by Inhomogeneous Field
arXiv: Applied Physics, 2019Co-Authors: Zhizhi Zhang, Michael Vogel, Jose Holanda, Benjamin M Jungfleisch, Yi Li, J Pearson, Ralu Divan, Wei Zhang, Axel Hoffmann, Valentyn NovosadAbstract:Spin waves are promising candidates for information processing and transmission in a broad frequency range. In the realization of magnonic devices, the frequency depended division of the spin wave frequencies is a critical function for parallel information processing. In this work, we demonstrate a proof-of-concept spin-wave frequency division multiplexing method by magnetizing a homogenous magnetic microstripe with an Inhomogeneous Field. The symmetry breaking additional Field is introduced by a permalloy stripe simply placed in lateral proximity to the waveguide. Spin waves with different frequencies can propagate independently, simultaneously and separately in space along the shared waveguide. This work brings new potentials for parallel information transmission and processing in magnonics.
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High-order harmonic and attosecond pulse generations from Rydberg state driven by the spatially Inhomogeneous Field
Modern Physics Letters B, 2017Co-Authors: Liqiang Feng, Yi Li, Fanshun Meng, R. S. CastleAbstract:High-order harmonic spectra and attosecond pulse generation from Rydberg atom (He+) driven by the spatially Inhomogeneous Field have been theoretically investigated. (i) Firstly, with an electron initially in a single excited Rydberg state (nth), the harmonic yield can be enhanced due to the decreased ionization potential, and a maximum enhancement can be obtained when the initial state is prepared as the third excited state (n = 3). However, the low cutoff energy from the excited state is unbeneficial to the generation of the higher photon pulse. Thus, with the further introduction of the laser chirp, not only the harmonic cutoff is extended, but also the harmonic modulation is reduced. As a result, five super-bandwidths from 63 eV to 267 eV can be found. (ii) Secondly, by preparing the initial state as a coherent superposition of excited state, the harmonic yield can be further enhanced, especially for the coherent superposition of the first and the third (n = 1 + 3) and the second and the fourth (n = 2 + 4) excited states, the harmonic yield is enhanced by 4–8 orders of magnitude compared with the case of the single ground initial state. Furthermore, by properly adding the laser pulse into the spatially Inhomogeneous region (gap center x0 = 0.0 a.u.) from left (x0 0.0a.u.), much higher cutoff energies can be obtained in the left region. As a consequence, two super-bandwidths of 248 eV and 496 eV can be obtained. Finally, by properly superposing the harmonics, a series of sub-25-as pulses with intensity enhancement of 5–8 orders of magnitude can be produced.
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High-order harmonic and attosecond pulse generations from Rydberg state driven by the spatially Inhomogeneous Field
Modern Physics Letters B, 2017Co-Authors: Liqiang Feng, Yi Li, Fanshun Meng, R. S. CastleAbstract:High-order harmonic spectra and attosecond pulse generation from Rydberg atom (He[Formula: see text]) driven by the spatially Inhomogeneous Field have been theoretically investigated. (i) Firstly, with an electron initially in a single excited Rydberg state (nth), the harmonic yield can be enhanced due to the decreased ionization potential, and a maximum enhancement can be obtained when the initial state is prepared as the third excited state (n = 3). However, the low cutoff energy from the excited state is unbeneficial to the generation of the higher photon pulse. Thus, with the further introduction of the laser chirp, not only the harmonic cutoff is extended, but also the harmonic modulation is reduced. As a result, five super-bandwidths from 63 eV to 267 eV can be found. (ii) Secondly, by preparing the initial state as a coherent superposition of excited state, the harmonic yield can be further enhanced, especially for the coherent superposition of the first and the third (n = 1 + 3) and the second and the fourth (n = 2 + 4) excited states, the harmonic yield is enhanced by 4–8 orders of magnitude compared with the case of the single ground initial state. Furthermore, by properly adding the laser pulse into the spatially Inhomogeneous region (gap center [Formula: see text] a.u.) from left [Formula: see text] to right [Formula: see text], much higher cutoff energies can be obtained in the left region. As a consequence, two super-bandwidths of 248 eV and 496 eV can be obtained. Finally, by properly superposing the harmonics, a series of sub-25-as pulses with intensity enhancement of 5–8 orders of magnitude can be produced.
Wei Zhang - One of the best experts on this subject based on the ideXlab platform.
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spin wave frequency division multiplexing in an yttrium iron garnet microstripe magnetized by Inhomogeneous Field
Applied Physics Letters, 2019Co-Authors: Zhizhi Zhang, Michael Vogel, Jose Holanda, Benjamin M Jungfleisch, Yi Li, J Pearson, Ralu Divan, Wei ZhangAbstract:Spin waves are promising candidates for information processing and transmission in a broad frequency range. In the realization of magnonic devices, the frequency related division of the spin waves is a critical function for parallel information processing. In this work, we demonstrate a proof-of-concept spin-wave frequency division multiplexing method by magnetizing a homogeneous magnetic microstripe with an Inhomogeneous Field. The symmetry breaking additional Field is introduced by a Permalloy stripe simply placed in lateral proximity to an yttrium iron garnet waveguide. Spin waves with different frequencies can propagate independently, simultaneously, and separately in space along the shared waveguide. This work demonstrates one potential way for parallel information transmission and processing in magnonics.Spin waves are promising candidates for information processing and transmission in a broad frequency range. In the realization of magnonic devices, the frequency related division of the spin waves is a critical function for parallel information processing. In this work, we demonstrate a proof-of-concept spin-wave frequency division multiplexing method by magnetizing a homogeneous magnetic microstripe with an Inhomogeneous Field. The symmetry breaking additional Field is introduced by a Permalloy stripe simply placed in lateral proximity to an yttrium iron garnet waveguide. Spin waves with different frequencies can propagate independently, simultaneously, and separately in space along the shared waveguide. This work demonstrates one potential way for parallel information transmission and processing in magnonics.
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spin wave frequency division multiplexing in an yttrium iron garnet microstripe magnetized by Inhomogeneous Field
arXiv: Applied Physics, 2019Co-Authors: Zhizhi Zhang, Michael Vogel, Jose Holanda, Benjamin M Jungfleisch, Yi Li, J Pearson, Ralu Divan, Wei Zhang, Axel Hoffmann, Valentyn NovosadAbstract:Spin waves are promising candidates for information processing and transmission in a broad frequency range. In the realization of magnonic devices, the frequency depended division of the spin wave frequencies is a critical function for parallel information processing. In this work, we demonstrate a proof-of-concept spin-wave frequency division multiplexing method by magnetizing a homogenous magnetic microstripe with an Inhomogeneous Field. The symmetry breaking additional Field is introduced by a permalloy stripe simply placed in lateral proximity to the waveguide. Spin waves with different frequencies can propagate independently, simultaneously and separately in space along the shared waveguide. This work brings new potentials for parallel information transmission and processing in magnonics.
H. Von Seggern - One of the best experts on this subject based on the ideXlab platform.
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polarization dynamics across the morphotropic phase boundary in ba zr0 2ti0 8 o3 x ba0 7ca0 3 tio3 ferroelectrics
Applied Physics Letters, 2013Co-Authors: S. Zhukov, Y.a. Genenko, Matias Acosta, Heide I Humburg, Wook Jo, Jurgen Rodel, H. Von SeggernAbstract:Analysis of polarization switching dynamics by means of the Inhomogeneous Field mechanism model allows insight into the microscopic mechanism of reversed polarization domain nucleation. For all chemical compositions studied, two distinct Field regions of nucleation are established. In the high-Field region, the activation energy barrier is found to be inversely proportional to the local Field according to the Merz law. In contrast, the barriers in the low-Field region exhibit a linear Field dependence with a minimum in the compositional region of phase instability, which can explain the corresponding peak ferroelectric properties.
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polarization switching dynamics by Inhomogeneous Field mechanism in ferroelectric polymers
Journal of Physics D, 2012Co-Authors: J. Schütrumpf, S. Zhukov, Y.a. Genenko, H. Von SeggernAbstract:The understanding of polarization switching dynamics of ferroelectrics is of great importance for practical applications and has been steadily advanced for ferroelectric ceramics and polymers for more than half a century. The temporal behaviour of polarization reversal in ferroelectric copolymers such as P(VDF-TrFE) cannot be satisfactorily explained by simple models such as the classical Kolmogorov–Avrami–Ishibashi nucleation and growth theory.In this paper the Inhomogeneous Field mechanism (IFM) model recently proposed for PZT ceramics has been applied to polymer ferroelectrics for the first time. The model is based on the assumption that the switching volume is divided into many spatial regions with independent dynamics, only determined by the local electric Field. The local Field values are randomly distributed over the ensemble of regions due to intrinsic inhomogeneities of the material. Therefore an Inhomogeneous switching behaviour is induced by the varying local Fields of each region. The statistical distribution of local Field values can be directly extracted from the experimental data. The model satisfactorily describes virgin P(VDF-TrFE) samples over a broad time-Field domain covering eight orders of magnitude of poling time and electric Field values from 30–150 kV mm−1. In the same way we can conclude that the IFM model is adaptive to both ferroelectric ceramics and semi-crystalline polymers.
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Polarisation switching dynamics by Inhomogeneous Field Mechanism in ferroelectric polymers
2011 - 14th International Symposium on Electrets, 2011Co-Authors: J. Schütrumpf, S. Zhukov, Y.a. Genenko, H. Von SeggernAbstract:The understanding of polarisation switching dynamics of ferroelectrics is of great importance for practical applications and is being steadily advanced for ferroelectric ceramics and polymers for more than half a century. The temporal behaviour of polarisation reversal in ferroelectric polymers like polyvinylidenedifluoride (PVDF) or its copolymer with trifluoroethylene P(VDF-TrFE) cannot be satisfactory explained by simple models such as the classical Kolmogorov-Avrami-Ishibashi nucleation and growth theory or by models considering stretched exponential laws. In this paper, Inhomogeneous Field Mechanism (IFM) model recently proposed for PZT ceramics has been applied to polymer ferroelectrics for the first time.
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dynamics of polarization reversal in virgin and fatigued ferroelectric ceramics by Inhomogeneous Field mechanism
Physical Review B, 2010Co-Authors: S. Zhukov, Y.a. Genenko, Ofer Hirsch, Julia Glaum, Torsten Granzow, H. Von SeggernAbstract:Temporal behavior of ferroelectric ceramics during the polarization switching cannot be satisfactorily explained by simple Debye or even stretched exponential laws. These materials exhibit rather a wide spectrum of characteristic times interpreted by different authors as switching or nucleation waiting times, the physical reasons for a wide time distribution still remaining unclear. A new model of polarization switching presented here suggests that the characteristic time variance in the ferroelectrics originates from the random distribution of the local electric Fields due to intrinsic randomness of the material. The presented theory allows a direct extraction of the distribution of Field values from the experiment. Systematic studies of polarization switching in fatigued lead zirconate titanate demonstrate the evolution of the Field distribution with increasing level of fatigue. Plausible cause of the formation of regions subject to different Field strengths is the generation of defects such as microcracks, pores, or voids in the course of fatigue. Suitability of the proposed model is demonstrated by an excellent correlation between experimental and calculated data for virgin and differently fatigued samples in a broad time-Field region covering the electric Field values of 0.5–2.5 kV/mm and nine orders of the magnitude of poling time.
Michael Vogel - One of the best experts on this subject based on the ideXlab platform.
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spin wave frequency division multiplexing in an yttrium iron garnet microstripe magnetized by Inhomogeneous Field
Applied Physics Letters, 2019Co-Authors: Zhizhi Zhang, Michael Vogel, Jose Holanda, Benjamin M Jungfleisch, Yi Li, J Pearson, Ralu Divan, Wei ZhangAbstract:Spin waves are promising candidates for information processing and transmission in a broad frequency range. In the realization of magnonic devices, the frequency related division of the spin waves is a critical function for parallel information processing. In this work, we demonstrate a proof-of-concept spin-wave frequency division multiplexing method by magnetizing a homogeneous magnetic microstripe with an Inhomogeneous Field. The symmetry breaking additional Field is introduced by a Permalloy stripe simply placed in lateral proximity to an yttrium iron garnet waveguide. Spin waves with different frequencies can propagate independently, simultaneously, and separately in space along the shared waveguide. This work demonstrates one potential way for parallel information transmission and processing in magnonics.Spin waves are promising candidates for information processing and transmission in a broad frequency range. In the realization of magnonic devices, the frequency related division of the spin waves is a critical function for parallel information processing. In this work, we demonstrate a proof-of-concept spin-wave frequency division multiplexing method by magnetizing a homogeneous magnetic microstripe with an Inhomogeneous Field. The symmetry breaking additional Field is introduced by a Permalloy stripe simply placed in lateral proximity to an yttrium iron garnet waveguide. Spin waves with different frequencies can propagate independently, simultaneously, and separately in space along the shared waveguide. This work demonstrates one potential way for parallel information transmission and processing in magnonics.
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spin wave frequency division multiplexing in an yttrium iron garnet microstripe magnetized by Inhomogeneous Field
arXiv: Applied Physics, 2019Co-Authors: Zhizhi Zhang, Michael Vogel, Jose Holanda, Benjamin M Jungfleisch, Yi Li, J Pearson, Ralu Divan, Wei Zhang, Axel Hoffmann, Valentyn NovosadAbstract:Spin waves are promising candidates for information processing and transmission in a broad frequency range. In the realization of magnonic devices, the frequency depended division of the spin wave frequencies is a critical function for parallel information processing. In this work, we demonstrate a proof-of-concept spin-wave frequency division multiplexing method by magnetizing a homogenous magnetic microstripe with an Inhomogeneous Field. The symmetry breaking additional Field is introduced by a permalloy stripe simply placed in lateral proximity to the waveguide. Spin waves with different frequencies can propagate independently, simultaneously and separately in space along the shared waveguide. This work brings new potentials for parallel information transmission and processing in magnonics.