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Superconducting Qubits

Theory of quantum transport in Josephson junctions with a ferromagnetic insulator

arXiv
Authors: Shiro Kawabata, Yasuhiro Asano

Year

2010

Paper ID

11097

Status

Preprint

Abstract Read

~2 min

Abstract Words

97

Citations

N/A

Abstract

We investigate the Josephson transport through ferromagnetic insulators (FIs) by taking into account the band structure of FIs explicitly. Using the recursive Green's function method, we found the formation of a pi-junction in such systems. Moreover the atomic-scale 0-pi oscillation is induced by increasing the thickness of FI and its oscillation period is universal, i.e., just single atomic layer. Based on these results, we show that stable pi-state can be realized in junctions based on high-Tc superconductors with La2BaCuO5 barrier. Such FI-based Josephson junctions may become an element in the architecture of future quantum computers.

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  • We investigate the Josephson transport through ferromagnetic insulators (FIs) by taking into account the band structure of FIs explicitly.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1009.5451 [2] arXiv https://arxiv.org/abs/1009.5451 [3] Publisher https://arxiv.org/abs/1009.5451

Local Citation Graph (Related-Paper Links)

Current Paper #11097 #69031 Amplitude-dependent quantum hyd... #69022 Contacting Josephson Junctions ... #69011 Improved Cryogenic Photodiode O... #68999 Suppression of Quasiparticle Po...

External citation index: OpenAlex citation signal

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