Thermally induced 0-pi phase transition in Josephson junctions through a ferromagnetic oxide film

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

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classification ❄️ cond-mat.supr-con cond-mat.mes-hallquant-ph

keywords josephsonferromagneticfilminducedjunctionsoxidephasetransition

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We investigate the Josephson transport through a ferromagnetic oxide film, e.g., La$_2$BaCuO$_5$, theoretically. Using the recursive Green's function technique, we found the formation of a pi-junction in such systems. Moreover the 0-pi phase transition is induced by increasing the temperature. Such ferromagnetic-oxide based Josephson junctions may become an element in the architecture of future quantum computers.

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Thermally induced 0-pi phase transition in Josephson junctions through a ferromagnetic oxide film

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