Mesoscopic fluctuations of conductance of a helical edge contaminated by magnetic impurities

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PhysRevLett
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https://doi.org/10.1103/PhysRevLett.110.206803
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Mesoscopic fluctuations of conductance of a helical edge contaminated by magnetic impurities. / Cheianov, Vadim ; Glazman, Leonid I.
In: Physical review letters, Vol. 110, No. 20, 206803, 14.05.2013.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Bibtex

@article{320aa62a73234b1496558b03f7a8765c,

title = "Mesoscopic fluctuations of conductance of a helical edge contaminated by magnetic impurities",

abstract = "Elastic backscattering of electrons moving along the helical edge is prohibited by time-reversal symmetry. We demonstrate, however, that an ensemble of magnetic impurities may cause time-reversal symmetry-preserving quasielastic backscattering, resulting in interference effects in the conductance. The characteristic energy transferred in a backscattering event is suppressed due to the Ruderman-Kittel-Kasuya-Yosida interaction of localized spins (the suppression is exponential in the total number of magnetic impurities). We predict the statistics of conductance fluctuations to differ from those in the conventional case of a one-dimensional system with quenched disorder.",

author = "Vadim Cheianov and Glazman, {Leonid I.}",

note = "{\textcopyright} 2013 American Physical Society",

year = "2013",

month = may,

day = "14",

doi = "10.1103/PhysRevLett.110.206803",

language = "English",

volume = "110",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "20",

}

RIS

TY - JOUR

T1 - Mesoscopic fluctuations of conductance of a helical edge contaminated by magnetic impurities

AU - Cheianov, Vadim

AU - Glazman, Leonid I.

PY - 2013/5/14

Y1 - 2013/5/14

N2 - Elastic backscattering of electrons moving along the helical edge is prohibited by time-reversal symmetry. We demonstrate, however, that an ensemble of magnetic impurities may cause time-reversal symmetry-preserving quasielastic backscattering, resulting in interference effects in the conductance. The characteristic energy transferred in a backscattering event is suppressed due to the Ruderman-Kittel-Kasuya-Yosida interaction of localized spins (the suppression is exponential in the total number of magnetic impurities). We predict the statistics of conductance fluctuations to differ from those in the conventional case of a one-dimensional system with quenched disorder.

AB - Elastic backscattering of electrons moving along the helical edge is prohibited by time-reversal symmetry. We demonstrate, however, that an ensemble of magnetic impurities may cause time-reversal symmetry-preserving quasielastic backscattering, resulting in interference effects in the conductance. The characteristic energy transferred in a backscattering event is suppressed due to the Ruderman-Kittel-Kasuya-Yosida interaction of localized spins (the suppression is exponential in the total number of magnetic impurities). We predict the statistics of conductance fluctuations to differ from those in the conventional case of a one-dimensional system with quenched disorder.

UR - http://www.scopus.com/inward/record.url?scp=84877815517&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.110.206803

DO - 10.1103/PhysRevLett.110.206803

M3 - Journal article

VL - 110

JO - Physical review letters

JF - Physical review letters

SN - 0031-9007

IS - 20

M1 - 206803

ER -

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