Spin and charge transport through a helical Aharonov-Bohm interferometer with a strong magnetic impurity

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Spin and charge transport through a helical Aharonov-Bohm interferometer with a strong magnetic impurity. / Niyazov, R. A.; Aristov, D. N.; Kachorovskii, V. Yu.

в: Physical Review B, Том 103, № 12, 125428, 26.03.2021.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

BibTeX

@article{12ecd1f81b4a478fb5e0df8cd9643024,

title = "Spin and charge transport through a helical Aharonov-Bohm interferometer with a strong magnetic impurity",

abstract = "We discuss transport through an interferometer formed by the helical edge states of a quantum spin Hall insulator. Focusing on the effects induced by a strong magnetic impurity placed in one of the arms of an interferometer, we consider the experimentally relevant case of relatively high temperature as compared to the level spacing. We obtain the conductance and spin polarization in a closed form for an arbitrary tunneling amplitude of the contacts and arbitrary strength of the magnetic impurity. We demonstrate the existence of quantum effects which do not show up in previously studied cases of weak magnetic disorder. We find optimal conditions for spin filtering and demonstrate that the spin polarization of outgoing electrons can reach 100%. ",

author = "Niyazov, {R. A.} and Aristov, {D. N.} and Kachorovskii, {V. Yu}",

year = "2021",

month = mar,

day = "26",

doi = "10.1103/PhysRevB.103.125428",

language = "English",

volume = "103",

journal = "Physical Review B-Condensed Matter",

issn = "1098-0121",

publisher = "American Physical Society",

number = "12",

}

RIS

TY - JOUR

T1 - Spin and charge transport through a helical Aharonov-Bohm interferometer with a strong magnetic impurity

AU - Niyazov, R. A.

AU - Aristov, D. N.

AU - Kachorovskii, V. Yu

PY - 2021/3/26

Y1 - 2021/3/26

N2 - We discuss transport through an interferometer formed by the helical edge states of a quantum spin Hall insulator. Focusing on the effects induced by a strong magnetic impurity placed in one of the arms of an interferometer, we consider the experimentally relevant case of relatively high temperature as compared to the level spacing. We obtain the conductance and spin polarization in a closed form for an arbitrary tunneling amplitude of the contacts and arbitrary strength of the magnetic impurity. We demonstrate the existence of quantum effects which do not show up in previously studied cases of weak magnetic disorder. We find optimal conditions for spin filtering and demonstrate that the spin polarization of outgoing electrons can reach 100%.

AB - We discuss transport through an interferometer formed by the helical edge states of a quantum spin Hall insulator. Focusing on the effects induced by a strong magnetic impurity placed in one of the arms of an interferometer, we consider the experimentally relevant case of relatively high temperature as compared to the level spacing. We obtain the conductance and spin polarization in a closed form for an arbitrary tunneling amplitude of the contacts and arbitrary strength of the magnetic impurity. We demonstrate the existence of quantum effects which do not show up in previously studied cases of weak magnetic disorder. We find optimal conditions for spin filtering and demonstrate that the spin polarization of outgoing electrons can reach 100%.

UR - http://www.scopus.com/inward/record.url?scp=85104248942&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.103.125428

DO - 10.1103/PhysRevB.103.125428

M3 - Article

AN - SCOPUS:85104248942

VL - 103

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 12

M1 - 125428

ER -

ID: 77864826