Thermodynamic properties of a superconductor interfaced with an altermagnet
arXiv:2403.10456 · doi:10.1103/PhysRevB.111.224503
Abstract
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.
6 pages, 6 figures
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Cited by in corpus (5)
- Inverse proximity effect in thin-film superconductor/magnet heterostructures with metallic and insulating magnets
- Engineering subgap states in superconductors by the symmetry of altermagnetism
- Josephson diode and spin-valve effects on the surface of altermagnet CrSb
- Interplay between Superconductivity and Altermagnetism in Disordered Materials and Heterostructures
- Perspectives on Magnetic/Superconductor Hybrid Systems: Long-range Electromagnetic Phenomena Induced by Proximity Effect and Interfacial Spin-orbit Coupling