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HL: Fachverband Halbleiterphysik

HL 17: Transport: Topological Insulators - 2D (Joint session of DS, HL, MA, O and TT, organized by TT)

HL 17.3: Vortrag

Montag, 7. März 2016, 15:30–15:45, H18

Transport in quantum spin Hall systems in parallel magnetic fields — •Michael Wimmer¹, Rafal Skolasinski¹, Dmitry Pikulin², and Jason Alicea³ — ¹TU Delft, The Netherlands — ²University of British Columbia, Canada — ³Caltech, US

Edge states in quantum spin Hall (QSH) systems are protected by time-reversal symmetry, resulting in a qunatized conductance. A magnetic field breaks that protection, and should lead to a deviation from perfect quantization. We will discuss generic features of semiconductor-based QSH systems (such as HgTe/CdTe and InAs/GaSb) that affect the magnetic field dependence of edge state conductance, focusing on the effect of an in-plane field.