Results 61 to 70 of about 6,957 (201)
Topological and magnetic phase transition in silicene-like zigzag nanoribbons
New Journal of Physics, 2018 Spin–orbital interactions (SOI) in silicene results in the quantum-spin-Hall effect, while the Hubbard-induced Coulomb interaction in zigzag nanoribbons often generates a band gap with the anti-ferromagnetic (AF) spin orders on two edges.
Xiao Long Lü, Yang Xie, Hang Xie
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Valley-dependent odd quantum Hall states induced by side potential in graphene
Results in Physics, 2023 The valley degree of freedom endows graphene with many novel physical properties. In this paper, we propose a new method to construct valley-related quantum Hall states using side potentials.
Zheng-Fang Liu +3 more
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The Quantum Spin Hall Effect: Theory and Experiment [PDF]
Journal of the Physical Society of Japan, 2008 The search for topologically non-trivial states of matter has become an important goal for condensed matter physics. Recently, a new class of topological insulators has been proposed. These topological insulators have an insulating gap in the bulk, but have topologically protected edge states due to the time reversal symmetry.
Chao-Xing Liu +7 more
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An edge index for the quantum spin-Hall effect [PDF]
Journal of Physics A: Mathematical and Theoretical, 2009 Quantum Spin-Hall systems are topological insulators displaying dissipationless spin currents flowing at the edges of the samples. In contradistinction to the Quantum Hall systems where the charge conductance of the edge modes is quantized, the spin conductance is not and it remained an open problem to find the observable whose edge current is ...
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Spin field-effect transistor in a quantum spin-Hall device [PDF]
Physical Review B, 2018 We discuss the transport properties of a quantum spin-Hall insulator with sizable Rashba spin-orbit coupling in a disk geometry. The presence of topologically protected helical edge states allows for the control and manipulation of spin polarized currents: when ferromagnetic leads are coupled to the quantum spin-Hall device, the ballistic conductance ...
Carmine Ortix +3 more
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Parity symmetry as the origin of ‘spin’ in the quantum spin Hall effect [PDF]
Physical Review B, 2021 12 pages, 4 figures; Secs.
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Quasi-spin-charge separation and the spin quantum Hall effect [PDF]
Physical Review B, 2001 We use quantum field theory methods to study the network model for the spin quantum hall transition. When the couplings are fine tuned in a certain way, the spin and charge degrees of freedom, corresponding to the supercurrent algebras su(2) and osp(2|2) respectively, decouple in the renormalization group flow.
Leclair, A., Bernard, Denis
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Quantum spin Hall effect in twisted bilayer graphene [PDF]
2D Materials, 2017 8 pages, 3 ...
Pablo San-Jose +3 more
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Three-band model for quantum Hall and spin Hall effects [PDF]
Physical Review B, 2013 5 pages, 1 ...
Jin-Hong Park +3 more
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Quantum Spin-Hall Effect in a Quantum Wire [PDF]
Journal of the Physical Society of Japan, 2010 In this paper, we show that spatially displaced helical states that transport electrons with opposite spins in opposite directions are formed in a harmonic quantum wire due to the spin–orbit (SO) coupling induced by lateral confinement. These states give rise to a transverse spin imbalance in response to the longitudinal charge current as well as a ...
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