Universal Spin Hall Conductance Fluctuations in Chaotic Dirac Quantum Dots
arXiv:1603.00449 · doi:10.1103/PhysRevB.93.115120
Abstract
We present complete analytical and numerical results that demonstrate the anomalous universal fluctuations of the spin-Hall conductance in chiral materials such as graphene and topological insulators. We investigated both the corresponding fluctuations, the Universal Fractionated and the Universal Quantized, and also the open channels orbital number crossover between the two regimes. In particular, we show that the Wigner-Dyson symmetries does not properly describe such conductances and the preponderant role of the chiral classes on the Dirac quantum dots. The results are analytical and solve outstanding issues.
arXiv comment5 pages, 3 figures. Accepted to be published - Physical Review B (2016)
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- Spin Hall angle fluctuations in a disorder device
- Effect of proximity-induced spin-orbit coupling in graphene mesoscopic billiards
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- Investigating transverse Hall conductances using two-terminal setups
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