Publikation:

The Andreev-Ising-Josephson Diode

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2024

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Tang, Gaomin

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https://doi.org/10.48550/arXiv.2411.04061
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http://arxiv.org/abs/2411.04061

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Deutsche Forschungsgemeinschaft (DFG): 443404566 - SPP 2244
National Natural Science Foundation of China: 12088101
National Natural Science Foundation of China: 12374048

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Open Access-Veröffentlichung

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Physik: Publikationen
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Zusammenfassung

The transition-metal dichalcogenides featuring Ising spin-orbit coupling in so-called Ising superconductors offer a unique system to study the interplay of singlet and triplet superconductivity. The presence of high critical fields, spectral properties such as the mirage gap, and field-tunable charge and spin currents in Ising-superconductor Josephson junctions are some of the important features. In this work, we study Ising-superconductor Josephson junction with a transparent interface and show that Andreev bound states are spin-split due to a relative misorientation of in-plane fields in the superconducting contacts. Correspondingly, supercurrent-phase relations display a strongly non-sinusoidal behavior. Introducing additional spin-polarized channels with low transmission results in a nonreciprocal current-phase relation with a diode effect that can be tuned by the in-plane exchange fields. The diode efficiency reaches high values of the order of 40% and is not sensitive to disorder in the junction. Such structures can be realized in van-der-Waals heterostructures of two dimensional superconductors and magnets.

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Fachgebiet (DDC)
530 Physik

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Mesoscale and Nanoscale Physics, superconductivity, Josephson junction

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ISO 690PATIL, Sourabh Prakash, Sourabh PATIL, Gaomin TANG, Wolfgang BELZIG, Wolfgang BELZIG, 2024. The Andreev-Ising-Josephson Diode
BibTex
@unpublished{Patil2024-11-06Andre-71267,
  year={2024},
  doi={10.48550/arXiv.2411.04061},
  title={The Andreev-Ising-Josephson Diode},
  author={Patil, Sourabh Prakash and Patil, Sourabh and Tang, Gaomin and Belzig, Wolfgang and Belzig, Wolfgang}
}
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