Mesoscopic transport in two-dimensional topological insulators

Standard

Mesoscopic transport in two-dimensional topological insulators. / Gusev, G. M.; Kvon, Z. D.; Olshanetsky, E. B. et al.

In: Solid State Communications, Vol. 302, 113701, 01.11.2019.

Research output: Contribution to journal › Review article › peer-review

Harvard

Gusev, GM, Kvon, ZD, Olshanetsky, EB & Mikhailov, NN 2019, 'Mesoscopic transport in two-dimensional topological insulators', Solid State Communications, vol. 302, 113701. https://doi.org/10.1016/j.ssc.2019.113701

APA

Gusev, G. M., Kvon, Z. D., Olshanetsky, E. B., & Mikhailov, N. N. (2019). Mesoscopic transport in two-dimensional topological insulators. Solid State Communications, 302, [113701]. https://doi.org/10.1016/j.ssc.2019.113701

Vancouver

Gusev GM, Kvon ZD, Olshanetsky EB, Mikhailov NN. Mesoscopic transport in two-dimensional topological insulators. Solid State Communications. 2019 Nov 1;302:113701. doi: 10.1016/j.ssc.2019.113701

Author

Gusev, G. M. ; Kvon, Z. D. ; Olshanetsky, E. B. et al. / Mesoscopic transport in two-dimensional topological insulators. In: Solid State Communications. 2019 ; Vol. 302.

BibTeX

@article{c1abf7e01e0e4c1c9235b9302805dd72,

title = "Mesoscopic transport in two-dimensional topological insulators",

abstract = "Topological states of matter have attracted a lot of attention due to their many intriguing transport properties. In particular, two-dimensional topological insulators (2D TI) possess gapless counter propagating conducting edge channels, with opposite spin, that are topologically protected from backscattering. Two basic features are supposed to confirm the existence of the ballistic edge channels in the submicrometer limit: the 4-terminal conductance is expected to be quantized at the universal value 2e2/h, and a nonlocal signal should appear due to a net current along the sample edge, carried by the helical states. On the other hand for longer channels the conductance has been found to deviate from the quantized value. This article reviewer the experimental and theoretical work related to the transport in two-dimensional topological insulators (2D-TI), based on HgTe quantum wells in zero magnetic field. We provide an overview of the basic mechanisms predicting a deviation from the quantized transport due to backscattering (accompanied by spin-flips) between the helical channels. We discuss the details of the model, which takes into account the edge and bulk contribution to the total current and reproduces the experimental results.",

keywords = "Edge states, Quantized transport, Spintronics, Topological insulator, STATES, QUANTUM, BAND",

author = "Gusev, {G. M.} and Kvon, {Z. D.} and Olshanetsky, {E. B.} and Mikhailov, {N. N.}",

year = "2019",

month = nov,

day = "1",

doi = "10.1016/j.ssc.2019.113701",

language = "English",

volume = "302",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier Ltd",

}

RIS

TY - JOUR

T1 - Mesoscopic transport in two-dimensional topological insulators

AU - Gusev, G. M.

AU - Kvon, Z. D.

AU - Olshanetsky, E. B.

AU - Mikhailov, N. N.

PY - 2019/11/1

Y1 - 2019/11/1

N2 - Topological states of matter have attracted a lot of attention due to their many intriguing transport properties. In particular, two-dimensional topological insulators (2D TI) possess gapless counter propagating conducting edge channels, with opposite spin, that are topologically protected from backscattering. Two basic features are supposed to confirm the existence of the ballistic edge channels in the submicrometer limit: the 4-terminal conductance is expected to be quantized at the universal value 2e2/h, and a nonlocal signal should appear due to a net current along the sample edge, carried by the helical states. On the other hand for longer channels the conductance has been found to deviate from the quantized value. This article reviewer the experimental and theoretical work related to the transport in two-dimensional topological insulators (2D-TI), based on HgTe quantum wells in zero magnetic field. We provide an overview of the basic mechanisms predicting a deviation from the quantized transport due to backscattering (accompanied by spin-flips) between the helical channels. We discuss the details of the model, which takes into account the edge and bulk contribution to the total current and reproduces the experimental results.

AB - Topological states of matter have attracted a lot of attention due to their many intriguing transport properties. In particular, two-dimensional topological insulators (2D TI) possess gapless counter propagating conducting edge channels, with opposite spin, that are topologically protected from backscattering. Two basic features are supposed to confirm the existence of the ballistic edge channels in the submicrometer limit: the 4-terminal conductance is expected to be quantized at the universal value 2e2/h, and a nonlocal signal should appear due to a net current along the sample edge, carried by the helical states. On the other hand for longer channels the conductance has been found to deviate from the quantized value. This article reviewer the experimental and theoretical work related to the transport in two-dimensional topological insulators (2D-TI), based on HgTe quantum wells in zero magnetic field. We provide an overview of the basic mechanisms predicting a deviation from the quantized transport due to backscattering (accompanied by spin-flips) between the helical channels. We discuss the details of the model, which takes into account the edge and bulk contribution to the total current and reproduces the experimental results.

KW - Edge states

KW - Quantized transport

KW - Spintronics

KW - Topological insulator

KW - STATES

KW - QUANTUM

KW - BAND

UR - http://www.scopus.com/inward/record.url?scp=85072918931&partnerID=8YFLogxK

U2 - 10.1016/j.ssc.2019.113701

DO - 10.1016/j.ssc.2019.113701

M3 - Review article

AN - SCOPUS:85072918931

VL - 302

JO - Solid State Communications

JF - Solid State Communications

SN - 0038-1098

M1 - 113701

ER -

ID: 21855983