CaltechAUTHORS
Published May 27, 2016 | Version Published
Journal Article Open

MgZnO/ZnO heterostructures with electron mobility exceeding 1 × 10⁶ cm²/Vs

Creators

  • 1. ROR icon University of Tokyo
  • 2. ROR icon Max Planck Institute for Solid State Research
  • 3. ROR icon RIKEN Center for Emergent Matter Science
  • 4. ROR icon Tohoku University
  • 5. ROR icon Japan Science and Technology Agency

Abstract

The inherently complex chemical and crystallographic nature of oxide materials has suppressed the purities achievable in laboratory environments, obscuring the rich physical degrees of freedom these systems host. In this manuscript we provide a systematic approach to defect identification and management in oxide molecular beam epitaxy grown MgZnO/ZnO heterostructures which host two-dimensional electron systems. We achieve samples displaying electron mobilities in excess of 1 × 10⁶ cm²/Vs. This data set for the MgZnO/ZnO system firmly establishes that the crystalline quality has become comparable to traditional semiconductor materials.

Additional Information

© 2016 The Author(s). This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ Received 09 February 2016. Accepted 29 April 2016. Published 27 May 2016. We acknowledge discussions with K. von Klitzing, W. Dietsche, D. Maryenko and the technical assistance of S. Akasaka, K. Nakahara and the staff at Epiquest. This work was partly supported by JSPS Grant-in-Aid for Scientific Research(S) No. 24226002 and for Young Scientist (A) No. 23686008 and the "Funding Program for World-Leading Innovative R&D on Science and Technology (FIRST Program)", initiated by the Council for Science and Technology Policy (CSTP). This work was carried out by joint research of the Cryogenic Research Center, the University of Tokyo. Author Contributions: J.F. performed the experiments, analysed the data and wrote the manuscript. J.F., Y.K., M.U., J.H.S., T.-h.A., A.T. and M.K. discussed the MBE design, results and manuscript. M.K. supervised the project. The authors declare no competing financial interests.

Attached Files

Published - srep26598.pdf

Files

srep26598.pdf

Files (1.2 MB)

Name Size Download all
md5:be08ceede505ad3490fdc48ddc14db1f
1.2 MB Preview Download

Additional details

Identifiers

PMCID
PMC4882538
Eprint ID
102288
Resolver ID
CaltechAUTHORS:20200402-144733064

Funding

Japan Society for the Promotion of Science (JSPS)
24226002
Japan Society for the Promotion of Science (JSPS)
23686008
Council for Science and Technology Policy (CSTP)

Dates

Created
2020-04-03
Created from EPrint's datestamp field
Updated
2022-08-16
Created from EPrint's last_modified field