Anisotropic electronic transport of the two-dimensional electron system in Al2O3/SrTiO3 heterostructures

Anisotropic electronic transport of the two-dimensional electron system in Al2O3/SrTiO3... Transport measurements on the two-dimensional electron system in Al2O3/SrTiO3 heterostructures indicate significant noncrystalline anisotropic behavior below T≈30K. Lattice dislocations in SrTiO3 and interfacial steps are suggested to be the main sources for electronic anisotropy. Anisotropic defect scattering likewise alters magnetoresistance at low temperature remarkably and influences spin-orbit coupling significantly by the Elliot-Yafet mechanism of spin relaxation, resulting in anisotropic weak localization. Applying a magnetic field parallel to the interface results in an additional field-induced anisotropy of the conductance, which can be attributed to Rashba spin-orbit interaction. Compared to LaAlO3/SrTiO3, Rashba coupling seems to be reduced, indicating a weaker polarity in Al2O3/SrTiO3 heterostructures. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Anisotropic electronic transport of the two-dimensional electron system in Al2O3/SrTiO3 heterostructures

Preview Only

Anisotropic electronic transport of the two-dimensional electron system in Al2O3/SrTiO3 heterostructures

Abstract

Transport measurements on the two-dimensional electron system in Al2O3/SrTiO3 heterostructures indicate significant noncrystalline anisotropic behavior below T≈30K. Lattice dislocations in SrTiO3 and interfacial steps are suggested to be the main sources for electronic anisotropy. Anisotropic defect scattering likewise alters magnetoresistance at low temperature remarkably and influences spin-orbit coupling significantly by the Elliot-Yafet mechanism of spin relaxation, resulting in anisotropic weak localization. Applying a magnetic field parallel to the interface results in an additional field-induced anisotropy of the conductance, which can be attributed to Rashba spin-orbit interaction. Compared to LaAlO3/SrTiO3, Rashba coupling seems to be reduced, indicating a weaker polarity in Al2O3/SrTiO3 heterostructures.
Loading next page...
 
/lp/aps_physical/anisotropic-electronic-transport-of-the-two-dimensional-electron-MlDdyvSkLi
Publisher
The American Physical Society
Copyright
Copyright © ©2017 American Physical Society
ISSN
1098-0121
eISSN
1550-235X
D.O.I.
10.1103/PhysRevB.95.245132
Publisher site
See Article on Publisher Site

Abstract

Transport measurements on the two-dimensional electron system in Al2O3/SrTiO3 heterostructures indicate significant noncrystalline anisotropic behavior below T≈30K. Lattice dislocations in SrTiO3 and interfacial steps are suggested to be the main sources for electronic anisotropy. Anisotropic defect scattering likewise alters magnetoresistance at low temperature remarkably and influences spin-orbit coupling significantly by the Elliot-Yafet mechanism of spin relaxation, resulting in anisotropic weak localization. Applying a magnetic field parallel to the interface results in an additional field-induced anisotropy of the conductance, which can be attributed to Rashba spin-orbit interaction. Compared to LaAlO3/SrTiO3, Rashba coupling seems to be reduced, indicating a weaker polarity in Al2O3/SrTiO3 heterostructures.

Journal

Physical Review BAmerican Physical Society (APS)

Published: Jun 26, 2017

There are no references for this article.

Sorry, we don’t have permission to share this article on DeepDyve,
but here are related articles that you can start reading right now:

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches

$49/month

Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.

$588

$360/year

billed annually
Start Free Trial

14-day Free Trial