Floating of extended states in a random magnetic field with a finite mean

Yakubo, K.

PHYSICAL REVIEW B, 2000, 62(24), 16756-16760

Permalink : https://hdl.handle.net/2115/5650

このアイテムのアクセス数:1,198件（2026-02-10 02:33 集計）

ファイル	フォーマット	サイズ	閲覧回数	説明
PRB62-24	pdf	293 KB	1,169

アクセス権	open access
URI	https://hdl.handle.net/2115/5650
タイトル	Floating of extended states in a random magnetic field with a finite mean
著者	e-Rad_Researcher 40200480 著者名 Yakubo, K. 矢久保, 考介
言語	英語
発行日	2000-12-15
出版者	The American Physical Society
収録物名	PHYSICAL REVIEW B
巻(号)	62(24)
ページ	16756-16760
抄録	Effects of a uniform magnetic field on two-dimensional (2D) electrons subject to a random magnetic field (RMF) are studied by a multifractal scaling analysis. For sufficiently strong uniform field (B¯ ≫　δb), the RMF system is equivalent to a quantum Hall system (QHS), namely, the spectral density of states splits into subbands, and states only at the subband centers are extended with the localization-length exponent v=2.31±0.01, where B¯ is the averaged magnetic field and d b is the characteristic amplitude of the spatially fluctuating field. In the case of B¯≲δb , subbands overlap each other and energies of extended states shift upwards with keeping its universality class. This behavior conflicts with a recent theoretical prediction and demonstrates that 2D systems in RMF's even with small finite means are rather close to QHS's.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Copyright © 2003 American Physical Society
PISSN	0163-1829
関連情報	URI http://www.aps.org/
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1103/PhysRevB.62.16756