Results 61 to 70 of about 30,912 (244)

Landau levels, response functions and magnetic oscillations from a generalized Onsager relation

SciPost Physics, 2018
A generalized semiclassical quantization condition for cyclotron orbits was recently proposed by Gao and Niu \cite{Gao}, that goes beyond the Onsager relation \cite{Onsager}.
Jean-Noël Fuchs, Frédéric Piéchon, Gilles Montambaux
doaj   +1 more source

Magneto-Coulomb drag: interplay of electron--electron interactions and Landau quantization [PDF]

, 1996
We use the Kubo formalism to calculate the transresistivity $\rho_{21}$ for carriers in coupled quantum wells in a large perpendicular magnetic field $B$.
A. G. Rojo, A. Kamenev, A.-P. Jauho, Antti-Pekka Jauho, B. Laikhtman, Ben Yu-Kuang Hu, D. B. Chklovskii, D. I. Maslov, D. Pines, E. Shimshoni, H. C. Tso, H. C. Tso, H. L. Cui, H. P. Wei, I. I. Boiko, J. P. Eisenstein, J.-M. Duan, Ji-Min Duan, K. Flensberg, K. Flensberg, K. Flensberg, Karsten Flensberg, L. Brey, L. Zheng, L. Świekowski, M. M. Fogler, Martin Christian Bønsager, P. M. Solomon, P. M. Solomon, S. Q. Murphy, T. Ando, T. J. Gramila, U. Sivan, W. Kohn   +33 more
core   +3 more sources

Transient Antiskyrmion‐Mediated Topological Transitions in Isotropic Magnets

Advanced Science, EarlyView.
A transient antiskyrmion‐mediated pathway that drives repeated stripe‐to‐skyrmion transitions is revealed, producing a net increase in topological charge in isotropic Dzyaloshinskii–Moriya interaction films. Experiments and simulations identify the antiskyrmion as a metastable excitation, enabling stochastic bitstream generation for probabilistic ...
Bingqian Dai, Tianyi Wang, Albert Lee, Shijie Xu, Zhongjian Bian, Xinyue Zhu, Puyang Huang, Aadi Chaturvedi, Yaochen Li, Yang Cheng, Qingyuan Shu, Haoran He, Hanshen Huang, Lixuan Tai, Kin Wong, Jinbo Yang, Anjan Soumyanarayanan, Zhaochu Luo, Kang L. Wang   +18 more
wiley   +1 more source

Precessing anisotropic Dirac cone and Landau subbands along a nodal spiral

New Journal of Physics, 2013
We derive a three-dimensional Dirac-cone structure composed of tilted anisotropic Dirac cones around spirally located Dirac points. The Dirac points form a nodal spiral in momentum space due to accidental degeneracy, which can be realized in rhombohedral
C H Ho, C P Chang, W P Su, M F Lin
doaj   +1 more source

Thermoelectric properties of the (an-)isotropic QGP in magnetic fields

European Physical Journal C: Particles and Fields, 2021
The Seebeck effect and the Nernst effect, which reflect the appearance of electric fields along x-axis and along y-axis ( $$E_{x}$$ E x and $$E_{y}$$ E y ), respectively, induced by the thermal gradient along x-axis, are studied in the QGP at an external
He-Xia Zhang, Jin-Wen Kang, Ben-Wei Zhang   +2 more
doaj   +1 more source

Shifted Landau levels in curved graphene sheets

, 2018
We study the Landau levels in curved graphene sheets by measuring the discrete energy spectrum in the presence of a magnetic field. We observe that in rippled graphene sheets, the Landau energy levels satisfy the same square root dependence on the energy
Debus, Jens-Daniel, Herrmann, Hans Jürgen, Mendoza, Miller   +2 more
core   +1 more source

A Clarification on Quantum‐Metric‐Induced Nonlinear Transport

Advanced Science, EarlyView.
How does the quantum metric truly govern the nonlinear transport? The longstanding theoretical discrepancies are resolved in quantum‐metric‐induced nonlinear transport and the correct intrinsic nonlinear conductivity is identified. Furthermore, a toy model is engineered to suppress the competing effects, uniquely highlighting the role of quantum metric
Xiao‐Bin Qiang, Tianyu Liu, Zi‐Xuan Gao, Hai‐Zhou Lu, X. C. Xie   +4 more
wiley   +1 more source

Observation of Quantized Exciton Energies in Monolayer WSe_{2} under a Strong Magnetic Field

Physical Review X, 2020
Quantized energy levels are one of the hallmarks of quantum mechanics at the atomic level. The manifestation of quantization in macroscopic physical systems has showcased important quantum phenomena, such as quantized conductance in (fractional) quantum ...
Tianmeng Wang, Zhipeng Li, Zhengguang Lu, Yunmei Li, Shengnan Miao, Zhen Lian, Yuze Meng, Mark Blei, Takashi Taniguchi, Kenji Watanabe, Sefaattin Tongay, Wang Yao, Dmitry Smirnov, Chuanwei Zhang, Su-Fei Shi   +14 more
doaj   +1 more source

Onset of Electron Captures and Shallow Heating in Magnetars

Universe, 2022
The loss of magnetic pressure accompanying the decay of the magnetic field in a magnetar may trigger exothermic electron captures by nuclei in the shallow layers of the stellar crust.
Nicolas Chamel, Anthea Francesca Fantina
doaj   +1 more source

Magneto-electrical subbands of freely suspended quantum point contacts

, 2009
We present a versatile design of freely suspended quantum point contacts with particular large one-dimensional subband quantization energies of up to 10meV. The nanoscale bridges embedding a two-dimensional electron system are fabricated from AlGaAs/GaAs
Berggren, C. Rössler, Dolgopolov, Elzerman, Field, Gustavsson, Hof, Höhberger, Khrapai, Kirschbaum, Kristensen, Kristensen, Laux, M. Bichler, M. Herz, Nicholas, Rejec, Rossler, Rossler, Roukes, S. Ludwig, Schmeller, Szafer, Taubert, Thomas, Thornton, Usher, van Wees, Wharam   +28 more
core   +1 more source