Publikation:

Thermodynamic properties of a superconductor interfaced with an altermagnet

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2025

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Chourasia, Simran

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http://nbn-resolving.de/urn:nbn:de:bsz:352-2-4fuj26tjd34v3
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https://doi.org/10.1103/physrevb.111.224503
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CC BY 4.0

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Deutsche Forschungsgemeinschaft (DFG): 425217212
Deutsche Forschungsgemeinschaft (DFG): SPP2244
Deutsche Forschungsgemeinschaft (DFG): 417034116

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Physical Review B. American Physical Society (APS). 2025, 111(22), 224503. ISSN 2469-9950. eISSN 2469-9969. Verfügbar unter: doi: 10.1103/physrevb.111.224503

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 directions, 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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ISO 690CHOURASIA, Simran, Aleksandr SVETOGOROV, Akashdeep KAMRA, Wolfgang BELZIG, 2025. Thermodynamic properties of a superconductor interfaced with an altermagnet. In: Physical Review B. American Physical Society (APS). 2025, 111(22), 224503. ISSN 2469-9950. eISSN 2469-9969. Verfügbar unter: doi: 10.1103/physrevb.111.224503
BibTex
@article{Chourasia2025-06-05Therm-73683,
  title={Thermodynamic properties of a superconductor interfaced with an altermagnet},
  year={2025},
  doi={10.1103/physrevb.111.224503},
  number={22},
  volume={111},
  issn={2469-9950},
  journal={Physical Review B},
  author={Chourasia, Simran and Svetogorov, Aleksandr and Kamra, Akashdeep and Belzig, Wolfgang},
  note={Article Number: 224503}
}
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