Conductance Change Induced by the Rashba Effect in the LaAlO3/SrTiO3 Interface

Title
Conductance Change Induced by the Rashba Effect in the LaAlO3/SrTiO3 Interface
Authors
김태엽김신익백승협홍진기구현철
Keywords
2DEG; LAO/STO; Rashba Effect; Spin-Orbit Interaction; Magnetoconductance
Issue Date
2015-11
Publisher
Journal of nanoscience and nanotechnology
Citation
VOL 15, NO 11, 8632-8636
Abstract
The LaAlO3/SrTiO3 (LAO/STO) heterostructure has an inherent space inversion asymmetry causing an internal electric field near the interface. The Rashba spin-orbit coupling arising from this structural characteristic has a considerable influence on spin transport. With application of an external magnetic field, we observed conductance change in the LAO/STO interface which depends on the sign and magnitude of the field. Our systematic study revealed that these results come from spin dependent transport, by which we obtained quantitative strength of the Rashba effect. The Rashbastrength in this system depends on the temperature: it varies from 2.6×10−12 eVm to negligible value in the temperature range of 1.8 K∼12 K. This method for detecting Rashba effect covers a wider temperature range in comparison with those obtained from Shubnikov-de Haas oscillation or weak antilocalization measurements.
URI
http://pubs.kist.re.kr/handle/201004/50280
ISSN
15334880
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE