Dynamical response of dissipative helical edge states

Doru Sticlet; J\'er\^ome Cayssol

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Dynamical response of dissipative helical edge states

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arxiv 1406.3633 v2 pith:A6KM4CXL submitted 2014-06-13 cond-mat.mes-hall

Dynamical response of dissipative helical edge states

Doru Sticlet , J\'er\^ome Cayssol This is my paper

classification cond-mat.mes-hall

keywords edgeresponsestatesdissipativedynamicalhelicalbathbiasing

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Quantum spin Hall insulators are characterized by topologically protected counterpropagating edge states. Here we study the dynamical response of these helical edge states under a time-dependent flux biasing, in the presence of a heat bath. It is shown that the relaxation time of the edge carriers can be determined from a measurement of the dissipative response of topological insulator disks. The effects of various perturbations, including Zeeman coupling and disorder, are also discussed.

Dynamical response of dissipative helical edge states

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