論文

査読有り
2014年6月

Spontaneous polarization driven Mg concentration profile reconstruction in MgZnO/ZnO heterostructures

APPLIED PHYSICS LETTERS
  • K. Imasaka
  • ,
  • J. Falson
  • ,
  • Y. Kozuka
  • ,
  • A. Tsukazaki
  • ,
  • M. Kawasaki

担当区分
筆頭著者
104
24
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1063/1.4884383
出版者・発行元
AMER INST PHYSICS

Atomic reconstruction at the interface of MgZnO and ZnO in molecular beam epitaxy grown heterostructures is investigated. Using secondary ion mass spectroscopy, we experimentally find that Mg atomic reconstruction depends on the polarity of the interface; it is not observed in n-type interfaces (MgZnO on Zn-polar ZnO) owing to electron accumulation, while in p-type interfaces (ZnO on Zn-polar MgZnO), Mg drastically redistributes into the ZnO layer. Combined with self-consistent calculation of band profiles and carrier distributions, we reveal that the observed Mg reconstruction is not due to thermal diffusion but consequences in order to avoid hole accumulation. This tendency implies inherent significant asymmetry of energy scales of atomic and electronic reconstructions between n-type and p-type interfaces. (C) 2014 AIP Publishing LLC.

Web of Science ® 被引用回数 : 1

リンク情報
DOI
https://doi.org/10.1063/1.4884383
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000337915000042&DestApp=WOS_CPL