Decoherence in macroscopic topological insulators produces quadratic corrections with impurity density, a stronger second-order skew-scattering channel for the extrinsic spin Hall effect, and a quadratic scaling law between spin Hall and longitudinal conductivity.
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Disorder induces a crossover from phase-averaging to mode-mixing regimes in domain wall transport of a second-order topological insulator, marked by a 0.5 e²/h plateau and two-step conductance fluctuations at 0.35 and 0.29 e²/h with corresponding Fano factors of 1/4 and 1/3.
Persistent photoconductivity in (Pb,Sn)Se quantum wells enables optical conversion from threefold-degenerate M-valley 2D hole gas to single Gamma-valley polarized electron gas, confirmed by Hall and quantum Hall measurements.
2DEG-S hybrids in quantized magnetic field host topologically protected edge states carrying even-integer quantized spin current robust to disorder.
Impurity-scattering-induced coherence decay produces finite longitudinal conductivity in Berry-curvature-dominated topological insulators without Fermi-level carriers, with linear impurity scaling and 1/T temperature dependence.
citing papers explorer
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Theory of quantum decoherence in macroscopic topological insulators
Decoherence in macroscopic topological insulators produces quadratic corrections with impurity density, a stronger second-order skew-scattering channel for the extrinsic spin Hall effect, and a quadratic scaling law between spin Hall and longitudinal conductivity.
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Disorder-induced crossover from phase-averaging to mode-mixing regimes in magnetic domain walls of a second-order topological insulator
Disorder induces a crossover from phase-averaging to mode-mixing regimes in domain wall transport of a second-order topological insulator, marked by a 0.5 e²/h plateau and two-step conductance fluctuations at 0.35 and 0.29 e²/h with corresponding Fano factors of 1/4 and 1/3.
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Optical control of conductivity type and valley polarization via persistent photoconductivity in (Pb,Sn)Se quantum wells
Persistent photoconductivity in (Pb,Sn)Se quantum wells enables optical conversion from threefold-degenerate M-valley 2D hole gas to single Gamma-valley polarized electron gas, confirmed by Hall and quantum Hall measurements.
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Emergent spin quantum Hall edge states at the boundary of two-dimensional electron gas proximitized by an $s$-wave superconductor
2DEG-S hybrids in quantized magnetic field host topologically protected edge states carrying even-integer quantized spin current robust to disorder.
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Metalization of topological insulators
Impurity-scattering-induced coherence decay produces finite longitudinal conductivity in Berry-curvature-dominated topological insulators without Fermi-level carriers, with linear impurity scaling and 1/T temperature dependence.