Magnonic超导。

IF 12.5 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Advances Pub Date : 2024-11-29 DOI:10.1126/sciadv.adp5681

Khachatur G. Nazaryan, Liang Fu

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引用次数: 0

摘要

我们揭示了磁场诱导的部分自旋极化超导态。这种状态，我们称之为“磁振超导体”，缺乏传统的配对顺序参数，而是由代表电子对和磁振子结合的复合顺序参数来表征。我们在具有排斥相互作用的一维和二维Hubbard模型中严格证明了具有高转变温度的磁超导性的存在。我们进一步表明，磁离子库珀对可以相互吸引形成高电荷束缚态，从而产生电荷-6e超导性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Magnonic superconductivity

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Magnonic superconductivity

We uncover a superconducting state with partial spin polarization induced by a magnetic field. This state, which we call “magnonic superconductor,” lacks a conventional pairing order parameter but is characterized instead by a composite order parameter that represents the binding of electron pairs and magnons. We rigorously demonstrate the existence of magnonic superconductivity with high transition temperature in one-dimensional and two-dimensional Hubbard models with repulsive interaction. We further show that magnonic Cooper pairs can attract to form higher-charge bound states, which can give rise to charge-6e superconductivity.

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来源期刊

Science Advances 综合性期刊-综合性期刊

CiteScore

21.40

自引率

1.50%

发文量

1937

审稿时长

29 weeks

期刊介绍： Science Advances, an open-access journal by AAAS, publishes impactful research in diverse scientific areas. It aims for fair, fast, and expert peer review, providing freely accessible research to readers. Led by distinguished scientists, the journal supports AAAS's mission by extending Science magazine's capacity to identify and promote significant advances. Evolving digital publishing technologies play a crucial role in advancing AAAS's global mission for science communication and benefitting humankind.