BROWSE

Related Scientist

Noh, Tae Won's photo.

Noh, Tae Won
강상관계 물질 연구단
more info

ITEM VIEW & DOWNLOAD

Enhanced tunability of two-dimensional electron gas on SrTiO3 through heterostructuring

Cited 0 time in webofscience Cited 0 time in scopus
13 Viewed 0 Downloaded
Title
Enhanced tunability of two-dimensional electron gas on SrTiO3 through heterostructuring
Author(s)
Hyang Keun Yoo; Luca Moreschini; Aaron Bostwick; Andrew L. Walter; Tae Won Noh; Eli Rotenberg; Young Jun Chang
Subject
Two-dimensional electron gas, ; SrTiO3, ; Polar oxide interface, ; Ultraviolet patterning
Publication Date
2020-11
Journal
CURRENT APPLIED PHYSICS, v.20, no.11, pp.1268 - 1273
Publisher
ELSEVIER
Abstract
© 2020 Korean Physical Society. Two-dimensional electron gases (2DEGs) on the SrTiO3 (STO) surface or in STO-based heterostructures have exhibited many intriguing phenomena, which are strongly dependent on the 2DEG-carrier density. We report that the tunability of the 2DEG-carrier density is significantly enhanced by adding a monolayer LaTiO3 (LTO) onto the STO. Ultraviolet (UV) irradiation induced maximum carrier density of the 2DEG in LTO/STO is increased by a factor of similar to 4 times, compared to that of the bare STO. By oxygen gas exposure, it becomes 10 times smaller than that of the bare STO. This enhanced tunability is attributed to the drastic surface property change of a polar LTO layer by UV irradiation and O-2 exposure. This indicates that the 2DEG controllability in LTO/STO is more reliable than that on the bare STO driven by defects, such an oxygen vacancy
URI
https://pr.ibs.re.kr/handle/8788114/7563
DOI
10.1016/j.cap.2020.08.019
ISSN
1567-1739
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
There are no files associated with this item.

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

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

Browse