Work

Interfacial spin-orbit coupling driven enhancement of superconductivity by parallel magnetic field

Year: 2024

Type: article

Abstract: It is commonly believed that time reversal symmetry breaking perturbations such as magnetic field or scattering on magnetic impurities destruct superconductivity and suppress the critical temperature of the superconducting phase transition. However, in recent experimental studies, significant enhancement of superconducting critical temperature by parallel magnetic field was found for several thin superconducting systems [H. J. Gardner et al., Nat. Phys. 7, 895 (2011); T. Asaba et al., Sci. Rep. 8, 6520 (2018)]. Here we present a possible explanation of the observed phenomenon showing that combination of interfacial spin-orbit interaction and external magnetic field can cause the increase of the superconducting critical temperature of thin superconducting film in a wide range of magnetic fields. We use the Ginzburg-Landau formalism, taking into account Lifshitz invariant originated from Rashba spin-orbit interaction, which is also responsible for the superconducting diode effect. We also calculate the modification of the Little-Parks oscillations of the critical temperature of hollow superconducting cylinder at the presence of Rashba interfacial spin-orbit interaction.

Source: Physical review. B./Physical review. B

DOI: 10.1103/physrevb.110.l180504

Authors: Zh. Devizorova, A. I. Buzdin

Institutions: Moscow Institute of Physics and Technology, Centre National de la Recherche Scientifique, Université de Bordeaux, Sechenov University, Laboratoire Ondes et Matière d'Aquitaine

Language: English

Topic: Physics of Superconductivity and Magnetism

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Russian Science Foundation, Ministry of Science and Higher Education of the Russian Federation

Awards: G371208887, G4072717604, G597338630, G6444257319