The quantum spin Hall effect and topological insulators
Xiao-Liang Qi,Shou-Cheng Zhang +1 more
TLDR
In topological insulators, spin-orbit coupling and time-reversal symmetry combine to form a novel state of matter predicted to have exotic physical properties as mentioned in this paper, which is called spin−orbit coupling.Abstract:
In topological insulators, spin–orbit coupling and time-reversal symmetry combine to form a novel state of matter predicted to have exotic physical properties.read more
Citations
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Topological phase transition in layered XIn2P2 (X = Ca, Sr)
TL;DR: In this paper, the topological properties of layered XIn2P2 (X = Ca, Sr) were studied based on fully relativistic first-principles calculations, which revealed a category of materials showing quantum phase transition from trivial semiconductor and topologically nontrivial insulator by tuneable elastic strain engineering.
Posted Content
Topological delocalization and tuning of surface channel separation in Bi2Se2Te Topological Insulator Thin films
TL;DR: In this article, the surface states of a 3D topological insulator (TI) exhibit topological protection against backscattering, but the contribution of bulk electrons to the transport data is an impediment to the surface protection of surface.
Journal ArticleDOI
Quantum pumping induced by disorder in one dimension
Jihong Qin,Huaiming Guo +1 more
TL;DR: In this paper, a stable quantum pumping can be constructed within the topological model, where an integer charge is pumped across a periodic chain in a cyclic process, and not only the quantum pumping is stable to on-site disorder, but also can be induced by it.
Journal ArticleDOI
Spin–orbit coupling effect on energy level splitting and band structure inversion in CsPbBr3
TL;DR: The band structures and density of states (DOS) of all the three structural configurations of CsPbBr3 without spin-orbit coupling (SOC) and with the addition of spinorbit coupling with respect to the density functional theory (DFT) were calculated in this paper, which provided a positive split-off energy value of Δso'='1.69' for the simple cubic phase.
Journal ArticleDOI
Unusual diffusive effects on the ESR of Nd3+ ions in the tunable topologically nontrivial semimetal YBiPt
G. G. Lesseux,T. M. Garitezi,Priscila Rosa,Priscila Rosa,C. B. R. Jesus,S. B. Oseroff,J. L. Sarrao,Zachary Fisk,Ricardo R. Urbano,P. G. Pagliuso,C. Rettori,C. Rettori +11 more
TL;DR: It is claimed that, in this regime for YBiPt, phonons are responsible for mediating the diffusion of the microwave energy absorbed at resonance by the Nd(3+) ions to the thermal bath throughout the skin depth (δ ≃ μm), and it is argued that this is only possible because of the existence of highly mobile conduction electrons inside the skin Depth.
References
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Quantum spin Hall effect in graphene
Charles L. Kane,Eugene J. Mele +1 more
TL;DR: Graphene is converted from an ideal two-dimensional semimetallic state to a quantum spin Hall insulator and the spin and charge conductances in these edge states are calculated and the effects of temperature, chemical potential, Rashba coupling, disorder, and symmetry breaking fields are discussed.
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New Method for High-Accuracy Determination of the Fine-Structure Constant Based on Quantized Hall Resistance
TL;DR: In this article, the Hall voltage of a two-dimensional electron gas, realized with a silicon metal-oxide-semiconductor field effect transistor, was measured and it was shown that the Hall resistance at particular, experimentally well-defined surface carrier concentrations has fixed values which depend only on the fine-structure constant and speed of light, and is insensitive to the geometry of the device.
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Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
TL;DR: In this article, the quantum spin Hall (QSH) effect can be realized in mercury-cadmium telluride semiconductor quantum wells, a state of matter with topological properties distinct from those of conventional insulators.
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Z-2 Topological Order and the Quantum Spin Hall Effect
Charles L. Kane,Eugene J. Mele +1 more
TL;DR: The Z2 order of the QSH phase is established in the two band model of graphene and a generalization of the formalism applicable to multiband and interacting systems is proposed.
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Non-Abelian Anyons and Topological Quantum Computation
TL;DR: In this article, the authors describe the mathematical underpinnings of topological quantum computation and the physics of the subject are addressed, using the ''ensuremath{
u}=5∕2$ fractional quantum Hall state as the archetype of a non-Abelian topological state enabling fault-tolerant quantum computation.