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Josephson Pi-state in a Ferromagnetic Insulator by Kawabata, Shiro; Asano, Yasuhiro; Tanaka, Yukio; Golubov, Alexander A.; Kashiwaya, Satoshi is a scholarly article available to read on EtoBox.

What is Josephson Pi-state in a Ferromagnetic Insulator about?

We predict anomalous atomic-scale 0-pi transitions in a Josephson junction with a ferromagnetic-insulator (FI) barrier. The ground state of such junction alternates between 0- and pi-states when thickness of FI is increasing by a single atomic layer. We find that the mechanism of the 0-pi 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 stable pi-state can be realized in junctions based on high-Tc superconductors with La$_2$BaCuO$_5$ barrier.

Author

Kawabata, Shiro; Asano, Yasuhiro; Tanaka, Yukio; Golubov, Alexander A.; Kashiwaya, Satoshi

Published

2010

Language

EN