Intrinsic spin Hall effect in silicene: transition from spin Hall to normal insulator

Physica Status Solidi - Rapid Research Letters - Tập 6 Số 8 - Trang 340-342 - 2012
A. Dyrdał1, J. Barnaś1,2
1Department of Physics, Adam Mickiewicz University, ul. Umultowska 85, 61-614 Poznan, Poland
2Institute of Molecular Physics, Polish Academy of Sciences, ul. M. Smoluchowskiego 17, 60-179 Poznan, Poland

Tóm tắt

AbstractAn intrinsic contribution to the spin Hall effect in two‐dimensional silicene is considered theoretically within the linear response theory and Green's function formalism. When an external voltage normal to the silicene plane is applied, the spin Hall conductivity is shown to reveal a transition from the spin Hall insulator phase at low bias to the conventional insulator phase at higher voltages. This transition resembles the recently reported phase transition in bilayer graphene. The spin–orbit interaction responsible for this transition in silicene is much stronger than in graphene, which should make the transition observable experimentally. (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Tài liệu tham khảo

10.1103/RevModPhys.81.109

10.1080/00018732.2010.487978

10.1063/1.3524215

10.1016/j.surfrep.2011.10.001

Dyakonov M. I., 1971, Pis'ma Zh. Eksp. Teor. Fiz., 13, 657

10.1103/PhysRevLett.83.1834

H. A.Engel E. I.Rashba andB. I.Halperin in: Handbook of Magnetism and Advanced Magnetic Materials edited by H. Kronmüller and S. Parkin Vol. 5: Spintronics and Magnetoelectronics (Wiley New York 2007).

M. I.DyakonovandA. V.Khaetskii in: Spin Physics in Semiconductors edited by M. I. Dyakonov (Springer‐Verlag Berlin Heidelberg 2008) Chap. 8.

10.1103/PhysRevLett.95.226801

10.1088/1367-2630/14/3/033003

10.1103/PhysRevB.84.195430

A. A.Abrikosov L. P.Gorkov andI. E.Dzyaloshinski Methods of Quantum Field Theory in Statistical Physics (Dover New York 1963).

10.1103/PhysRevB.80.155444

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Thông tin xuất bản

Physica Status Solidi - Rapid Research Letters

Tập 6 Số 8

340-342

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