Josephson π State in a Ferromagnetic Insulator


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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/48283

Title:	Josephson π State in a Ferromagnetic Insulator
Authors:	Kawabata, Shiro Browse this author
	Asano, Yasuhiro Browse this author →KAKEN DB
	Tanaka, Yukio Browse this author
	Golubov, Alexander A. Browse this author
	Kashiwaya, Satoshi Browse this author
Issue Date:	19-Mar-2010
Publisher:	American Physical Society
Journal Title:	Physical Review Letters
Volume:	104
Issue:	11
Start Page:	117002
Publisher DOI:	10.1103/PhysRevLett.104.117002
Abstract:	We predict anomalous atomic-scale 0-π transitions in a Josephson junction with a ferromagnetic-insulator (FI) barrier. The ground state of such junction alternates between 0 and π states when thickness of FI is increasing by a single atomic layer. We find that the mechanism of the 0-π transition can be attributed to thickness-dependent phase shifts between the wave numbers of electrons and holes in FI. Based on these results, we show that a stable π state can be realized in junctions based on high-Tc superconductors with a La2BaCuO5 barrier.
Rights:	© 2010 The American Physical Society
Type:	article
URI:	http://hdl.handle.net/2115/48283
Appears in Collections:	工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 浅野泰寛

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