Results 171 to 180 of about 6,957 (201)

The quantum spin Hall effect [PDF]

Journal of Applied Physics, 2011
In a two-dimensional system the quantum spin Hall effect (QSHE) state is characterized by an insulating bulk and two counter-propagating helical edge states. These edge channels are protected by time reversal symmetry and spin currents propagate without dissipation.
Joseph Maciejko, Taylor L. Hughes, Shou-Cheng Zhang   +2 more
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Fractional quantum Hall effect in a spin [PDF]

Physics World, 1989
Almost 10 years ago the integer quantum Hall effect (IQHE) was discovered by Klaus von Klitzing, Gerhard Dorda and Mike Pepper for which Klaus von Klitzing was awarded the Nobel prize in 1985. A few years later the fractional QHE (FQHE) was discovered by Dan Tsui, Horst Stormer and Art Gossard who were awarded the 1984 Buckley prize of the American ...
Robert Clark, Peter A. Maksym
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Quantum anomalous Hall-quantum spin Hall effect in optical superlattices

Optics Letters, 2018
We consider the topological characteristics of the spin-orbital coupling particles loaded in one-dimensional (1D) optical superlattices subject to the Zeeman field. The phase shift of the superlattice provides a virtual dimension which allows us to simulate two-dimensional topological phases with a physically 1D system.
Ce Shang, Xianfeng Chen, Weidong Luo, Fangwei Ye   +3 more
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Fractional quantum Hall effect with spin reversal

Physical Review B, 1989
We study the spin polarization of the ground states and the excited states of the fractional quantum Hall effect, using spherical geometry for finite-size systems. In the absence of the Zeeman energy, the ground states at filling 2/q, with q odd, are found to be spin unpolarized and nondegenerate for all values of q studied.
Zhang, FC, Guo, Y, Xie, XC
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A new spin on the quantum Hall effect [PDF]

Physics World, 1999
Since its discovery, the fractional quantum Hall effect has continued to surprise physicists despite 17 years of intense investigation. Recent experiments by Klaus von Klitzing's group at the Max Planck Institute for Solid State Physics in Stuttgart, and co-workers from the University of Stuttgart and the Walter Schottky Institute in Munich, have ...
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Quantum Spin Hall Effect

2012
A quantum spin Hall system possesses a pair of helical edge states. It exhibits the quantum spin Hall effect, in which an electric current can induce a transverse spin current or spin accumulation near the system boundary.
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Quantum Anomalous Hall Effect and Quantum Spin Hall Effect

2017
A quantum anomalous Hall system possesses chiral edge states around its boundary, giving rise to quantized Hall conductance even in the absence of external magnetic field. Quantum spin Hall effect is a spin version of quantum Hall effect. A quantum spin Hall system possesses a pair of helical edge states, in which an electric current can induce a ...
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The effect of spin mixing on the quantum Hall effect in graphene

Journal of Physics: Condensed Matter, 2009
On the basis of a tight-binding model, we study numerically the effect of Rashba spin-orbit coupling on the quantum Hall effect in graphene. It is found that the spin-orbit coupling can open a gap in the energy spectrum of the counterpropagating edge states in the ν = 0 plateau region, while the edge states in other plateau regions remain gapless.
D. N. Sheng, L. Sheng, D. Y. Xing
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GRAPHENE AND THE QUANTUM SPIN HALL EFFECT

International Journal of Modern Physics B, 2007
We show that the intrinsic spin orbit interaction in a single plane of graphene converts the ideal two dimensional semi metallic groundstate of graphene into a quantum spin Hall (QSH) state. This novel electronic phase shares many similarities with the quantum Hall effect.
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Spin Effects in Quantum Hall Droplets

2003
We review here our recent work on spin effects in quantum Hall droplets. The formation, stability, and total spin of quantum Hall droplets with filling factor v ≤ 2 is discussed in detail.
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