Charge and spin transport through the two-dimensional electron gas/ferromagnet junctions with Rashba spin-orbit coupling

被引：4

作者：

Srisongmuang, B. ^{[1
]}

机构：

[1] King Mungkuts Univ Technol Thonburi, Bangkok 10140, Thailand

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2013年 / 54卷

关键词：

Rashba spin-orbit coupling; Tunneling spectroscopy; Tunneling conductance; Ferromagnet; Spin polarization; DRESSELHAUS; INJECTION;

D O I：

10.1016/j.physe.2013.06.020

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Using the method of Blonder, Tinkham and Klapwijk, the conductance spectra of two-dimensional electron gas (2DEG) and ferromagnet (F) junctions in the presence of Rashba spin-orbit coupling (RSOC) are theoretically studied. Two distinguishing features are predicted. This predicted effect allows a direct measurement of the exchange energy of the ferromagnet and the Rashba energy of the 2DEG. The influence of the interfacial scattering is also considered on the differential conductance and spin polarization of the conductance. Surprisingly, the Combined effect of both types of scattering (spin-conserving and spin-flip) can actually result in an increase in conductance and spin polarization under certain conditions. The transport properties of 2DEG/F and metal (M)/F junctions are compared. It is implied that Rashba spin-orbit coupling can enhance spin polarization. (c) 2013 Elsevier B.V. All rights reserved.

引用

页码：167 / 170

页数：4

共 18 条

[1] TRANSITION FROM METALLIC TO TUNNELING REGIMES IN SUPERCONDUCTING MICRO-CONSTRICTIONS - EXCESS CURRENT, CHARGE IMBALANCE, AND SUPER-CURRENT CONVERSION [J].

BLONDER, GE ;

TINKHAM, M ;

KLAPWIJK, TM .

PHYSICAL REVIEW B, 1982, 25 (07) :4515-4532

[2] Coupled quantum dots as quantum gates [J].

Burkard, G ;

Loss, D ;

DiVincenzo, DP .

PHYSICAL REVIEW B, 1999, 59 (03) :2070-2078

[3] INTERFACIAL CHARGE-SPIN COUPLING - INJECTION AND DETECTION OF SPIN MAGNETIZATION IN METALS [J].

JOHNSON, M ;

SILSBEE, RH .

PHYSICAL REVIEW LETTERS, 1985, 55 (17) :1790-1793

[4] Ballistic spin currents in mesoscopic metal/In(Ga)As/metal junctions [J].

Lee, M ;

Choi, MS .

PHYSICAL REVIEW B, 2005, 71 (15)

[5] Spin Current in Generic Hybrid Structures due to Interfacial Spin-Orbit Scattering [J].

Linder, Jacob ;

Yokoyama, Takehito .

PHYSICAL REVIEW LETTERS, 2011, 106 (23)

[6] Transport of spin-polarized electrons in a magnetic superlattice [J].

Liu, JF ;

Deng, WJ ;

Xia, K ;

Zhang, C ;

Ma, ZS .

PHYSICAL REVIEW B, 2006, 73 (15)

[7] The effects of Dresselhaus and Rashba spin-orbit interactions on the electron tunneling in a non-magnetic heterostructure [J].

Lu, Jian-Duo ;

Li, Jian-Wen .

APPLIED SURFACE SCIENCE, 2010, 256 (12) :4027-4030

[8] Ballistic transport in one-dimensional loops with Rashba and Dresselhaus spin-orbit coupling [J].

Ramaglia, VM ;

Cataudella, V ;

De Filippis, G ;

Perroni, CA .

PHYSICAL REVIEW B, 2006, 73 (15)

[9] Theory of electrical spin injection: Tunnel contacts as a solution of the conductivity mismatch problem [J].

Rashba, EI .

PHYSICAL REVIEW B, 2000, 62 (24) :R16267-R16270

[10] Charge transport in 2DEG/s-wave superconductor junction with Dresselhaus-type spin-orbit coupling [J].

Sawa, Y. ;

Yokoyama, T. ;

Tanaka, Y. .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2007, 310 (02) :2277-2279

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