Spin-orbit coupled superconductivity at the interface of LaAlO3/SrTiO3

Chi‐Sheng Li; Akhilesh Kr. Singh; Ming-Yuan Song; Wei-Li Lee

doi:10.1117/12.2264378

Abstract

We have grown few unit cells of epitaxial LaAlO₃ (LAO) on TiO₂ terminated SrTiO₃ (STO) substrates using oxide MBE technique, which shows an interface superconductivity below about 0.3 K. By fabricating a back gate electrode via the STO substrate, the superconductor-to-insulator transition was observed by applying gate voltages on a macroscopic size of the two-dimensional electron liquid (2DEL) at the interface of LAO/STO. From the superconducting critical field anisotropy measurements, a sizable spin-orbit coupling is found to present in the superconducting phase, where the upper limit of the spin-orbit coupling strength can be largely tuned by gate voltages. In addition, magnetotransport anomaly was observed when depleting the electron density and thus driving the 2DEL into insulating phase, suggesting an inhomogeneous density distribution and also a possible multiband conduction in the 2DEL.

Conference Presentation

Citation Download Citation

Chi‐Sheng Li, Chi‐Sheng Li, Akhilesh Kr. Singh, Akhilesh Kr. Singh, Ming-Yuan Song, Ming-Yuan Song, Wei-Li Lee, Wei-Li Lee, } "Spin-orbit coupled superconductivity at the interface of LaAlO₃/SrTiO₃", Proc. SPIE 10105, Oxide-based Materials and Devices VIII, 101051T (8 March 2017); doi: 10.1117/12.2264378; https://doi.org/10.1117/12.2264378

ACCESS THE FULL ARTICLE

PERSONAL SIGN IN
Full access may be available with your subscription

Email or Username Forgot your username?

Password Forgot your password?

Show

Remember Email/Username on this computer

Remember Password

No SPIE account? Create an account
or Institutional Sign In via Shibboleth

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $14.40

Non-members: $18.00 ADD TO CART

Show All Keywords

Keywords/Phrases

Search In:

Publication Years