Interface effects on the magnetic-proximity-induced quantized Hall response in heterostructures based on three-dimensional topological insulators

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Interface effects on the magnetic-proximity-induced quantized Hall response in heterostructures based on three-dimensional topological insulators. / Men'Shov, V. N.; Shvets, I. A.; Chulkov, E. V.

In: Physical Review B, Vol. 99, No. 11, 115301, 04.03.2019.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{b6bf8840a26a44129ccea1af8255c033,

title = "Interface effects on the magnetic-proximity-induced quantized Hall response in heterostructures based on three-dimensional topological insulators",

abstract = "We report a theoretical study of the spin-dependent transport properties in heterostructures containing a three-dimensional topological insulator (TI) thin film and ferromagnetic normal insulator (FMNI) slab. Within the framework of a continual approach for the FMNI/TI/FMNI trilayer model, we reveal how the magnetic proximity effect at the TI/FMNI interface can influence an intrinsic Hall response of the system. We predict that the FMNI/TI/FMNI trilayer undergoes a transition into the quantum anomalous Hall phase either from the topologically trivial phase or from the quantum spin Hall phase, which is controlled by tuning the proximity-induced exchange field, the TI film thickness, and the TI band structure parameters. We draw the corresponding phase diagram of the FMNI/TI/FMNI trilayer. Moreover, we argue that the roughness at the TI/FMNI interfaces can cause the decomposition of the TI film into topologically distinct domains, which affects the Hall conductivity. We discuss the specifics of manifestation and complexities of observation of quantized conductivity in realistic TI/FMNI heterostructures.",

keywords = "CONDUCTIVITY, DISORDER, STATE, PHASE",

author = "Men'Shov, {V. N.} and Shvets, {I. A.} and Chulkov, {E. V.}",

year = "2019",

month = mar,

day = "4",

doi = "10.1103/PhysRevB.99.115301",

language = "English",

volume = "99",

journal = "Physical Review B-Condensed Matter",

issn = "1098-0121",

publisher = "American Physical Society",

number = "11",

}

RIS

TY - JOUR

T1 - Interface effects on the magnetic-proximity-induced quantized Hall response in heterostructures based on three-dimensional topological insulators

AU - Men'Shov, V. N.

AU - Shvets, I. A.

AU - Chulkov, E. V.

PY - 2019/3/4

Y1 - 2019/3/4

N2 - We report a theoretical study of the spin-dependent transport properties in heterostructures containing a three-dimensional topological insulator (TI) thin film and ferromagnetic normal insulator (FMNI) slab. Within the framework of a continual approach for the FMNI/TI/FMNI trilayer model, we reveal how the magnetic proximity effect at the TI/FMNI interface can influence an intrinsic Hall response of the system. We predict that the FMNI/TI/FMNI trilayer undergoes a transition into the quantum anomalous Hall phase either from the topologically trivial phase or from the quantum spin Hall phase, which is controlled by tuning the proximity-induced exchange field, the TI film thickness, and the TI band structure parameters. We draw the corresponding phase diagram of the FMNI/TI/FMNI trilayer. Moreover, we argue that the roughness at the TI/FMNI interfaces can cause the decomposition of the TI film into topologically distinct domains, which affects the Hall conductivity. We discuss the specifics of manifestation and complexities of observation of quantized conductivity in realistic TI/FMNI heterostructures.

AB - We report a theoretical study of the spin-dependent transport properties in heterostructures containing a three-dimensional topological insulator (TI) thin film and ferromagnetic normal insulator (FMNI) slab. Within the framework of a continual approach for the FMNI/TI/FMNI trilayer model, we reveal how the magnetic proximity effect at the TI/FMNI interface can influence an intrinsic Hall response of the system. We predict that the FMNI/TI/FMNI trilayer undergoes a transition into the quantum anomalous Hall phase either from the topologically trivial phase or from the quantum spin Hall phase, which is controlled by tuning the proximity-induced exchange field, the TI film thickness, and the TI band structure parameters. We draw the corresponding phase diagram of the FMNI/TI/FMNI trilayer. Moreover, we argue that the roughness at the TI/FMNI interfaces can cause the decomposition of the TI film into topologically distinct domains, which affects the Hall conductivity. We discuss the specifics of manifestation and complexities of observation of quantized conductivity in realistic TI/FMNI heterostructures.

KW - CONDUCTIVITY

KW - DISORDER

KW - STATE

KW - PHASE

UR - http://www.scopus.com/inward/record.url?scp=85062702532&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.99.115301

DO - 10.1103/PhysRevB.99.115301

M3 - Article

AN - SCOPUS:85062702532

VL - 99

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 11

M1 - 115301

ER -

ID: 49497581