Author(s): Zhao, D (Zhao, Duo); Zhao, ZY (Zhao, Zhiyuan); Xu, YH (Xu, Yaohan); Tong, SC (Tong, Shucheng); Lu, J (Lu, Jun); Wei, DH (Wei, Dahai)

Source: NANOMATERIALS Volume: 12 Issue: 8 Article Number: 1313 DOI: 10.3390/nano12081313 Published: APR 2022

Abstract: The transverse magnetoresistance (R-xy) caused by inhomogeneous superconductivity is symmetric about the magnetic field around the critical magnetic field region. This has caused many disturbances during the study of vortex dynamics by Hall signals. Here, we found that the peak of R-xy measured in our samples was induced by the nonuniformity of the superconductors. The peak values of R-xy decrease with increasing applied current and temperature, which can be described by the theory of superconductivity inhomogeneity. Based on this, we have proposed and verified a method for separating the transverse voltage caused by the inhomogeneity of superconductivity. Additionally, quantity Delta B(0) can also be used to characterize the uniformity of superconductivity. This clears up the obstacles for studying vortex motion dynamics and reveals a way to study the influence of the domain wall on superconductivity.

Accession Number: WOS:000787075700001

PubMed ID: 35458021

eISSN: 2079-4991

Full Text: https://www.mdpi.com/2079-4991/12/8/1313