Inhomogeneity-driven multiform Spontaneous Hall Effect in conventional and unconventional superconductors.

ABSTRACT: The spontaneous Hall effect (SHE), a finite voltage occurring transversal to the electrical current in zero-magnetic field, has been observed in both conventional and unconventional superconductors, appearing as a peak near the superconducting transition temperature. The origin of SHE is strongly debated, with proposed explanations ranging from intrinsic and extrinsic mechanisms such as spontaneous symmetry breaking and time-reversal symmetry breaking (BTRS), Abrikosov vortex motion, or extrinsic factors like material inhomogeneities, such as non-uniform critical temperature (T_c) distributions or structural asymmetries. This work is an experimental study of the SHE in various superconducting materials. We focused on conventional, low-T_c, sharp transition Nb and unconv

SUBMITTER: Stegani N 

PROVIDER: S-EPMC12418796 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature