TY - JOUR
T1 - Nonequilibrium transport through a gate-controlled barrier on the quantum spin hall edge
AU - Ilan, Roni
AU - Cayssol, Jérôme
AU - Bardarson, Jens H.
AU - Moore, Joel E.
PY - 2012/11/20
Y1 - 2012/11/20
N2 - The quantum spin Hall insulator is characterized by the presence of gapless helical edge states where the spin of the charge carriers is locked to their direction of motion. In order to probe the properties of the edge modes, we propose a design of a tunable quantum impurity realized by a local gate under an external magnetic field. Using the integrability of the impurity model, the conductance is computed for arbitrary interactions, temperatures and voltages, including the effect of Fermi liquid leads. The result can be used to infer the strength of interactions from transport experiments.
AB - The quantum spin Hall insulator is characterized by the presence of gapless helical edge states where the spin of the charge carriers is locked to their direction of motion. In order to probe the properties of the edge modes, we propose a design of a tunable quantum impurity realized by a local gate under an external magnetic field. Using the integrability of the impurity model, the conductance is computed for arbitrary interactions, temperatures and voltages, including the effect of Fermi liquid leads. The result can be used to infer the strength of interactions from transport experiments.
UR - http://www.scopus.com/inward/record.url?scp=84870169811&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.109.216602
DO - 10.1103/PhysRevLett.109.216602
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AN - SCOPUS:84870169811
SN - 0031-9007
VL - 109
JO - Physical Review Letters
JF - Physical Review Letters
IS - 21
M1 - 216602
ER -