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arXiv · 1307.4441

Time-reversal operation and transport phenomena in topological insulators

Andrew Das Arulsamy
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Abstract

We prove that any forms of electric current measurements within a gapped or gapless quantum system necessarily violate the time reversal symmetry (TRS). We then use the ionization energy theory to unequivocally show that the metallic surface states of a topological insulator consist of some special energy level crossings, not due to TRS induced Kramers degeneracy because there is a finite energy gap due to different wavefunctions. We use this special crossings and derive the electron-ion scattering rate required to explain the resistivity and carrier-type transition in (Bi1-xSbx)2Te3 and Pb1-xSnxSe topological insulators.

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Andrew Das Arulsamy. 2014-07-09. Time-reversal operation and transport phenomena in topological insulators. https://arxiv.org/abs/1307.4441

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