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Thermodynamic properties of a superconductor interfaced with an altermagnet

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2024

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https://doi.org/10.48550/arXiv.2403.10456
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http://arxiv.org/abs/2403.10456

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Deutsche Forschungsgemeinschaft (DFG): 425217212
Deutsche Forschungsgemeinschaft (DFG): 417034116

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Zusammenfassung

Recently introduced magnetic materials called altermagnets (AM) feature zero net magnetization but a momentum dependent magnetic exchange field, which can have intriguing implications when combined with superconductivity. In our work, we use the quasiclassical framework to study the effects of such a material on a conventional superconductor (S) in an AM/S bilayer. We discuss the superconducting phase diagram and heat capacity of AM/S while making a comparison with a ferromagnet-superconductor bilayer. Furthermore, we examine the density of states and analyze the system's response to an external magnetic field. We illustrate the anisotropy of spin-susceptibility and magnetization of AM/S by considering an external field in the in-plane and out-of-plane direction, thereby facilitating the scope of experimental detection and characterization of an AM in an AM/S hybrid system.

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530 Physik

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Superconductivity, Mesoscale and Nanoscale Physics, Thermodynamics, altermagnet

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ISO 690CHOURASIA, Simran, Aleksandr SVETOGOROV, Akashdeep KAMRA, Wolfgang BELZIG, 2024. Thermodynamic properties of a superconductor interfaced with an altermagnet
BibTex
@unpublished{Chourasia2024-03-15Therm-69657,
  year={2024},
  doi={10.48550/arXiv.2403.10456},
  title={Thermodynamic properties of a superconductor interfaced with an altermagnet},
  author={Chourasia, Simran and Svetogorov, Aleksandr and Kamra, Akashdeep and Belzig, Wolfgang}
}
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