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Zhao D, Zhao Z, Xu Y, Tong S, Lu J, Wei D. Transverse Magnetoresistance Induced by the Nonuniformity of Superconductor. NANOMATERIALS 2022; 12:nano12081313. [PMID: 35458021 PMCID: PMC9031214 DOI: 10.3390/nano12081313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 03/28/2022] [Accepted: 04/09/2022] [Indexed: 12/10/2022]
Abstract
The transverse magnetoresistance (Rxy) 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 Rxy measured in our samples was induced by the nonuniformity of the superconductors. The peak values of Rxy 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 ΔB(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.
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Affiliation(s)
- Duo Zhao
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China; (D.Z.); (Z.Z.); (Y.X.)
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Zhiyuan Zhao
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China; (D.Z.); (Z.Z.); (Y.X.)
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Yaohan Xu
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China; (D.Z.); (Z.Z.); (Y.X.)
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Shucheng Tong
- Beijing Academy of Quantum Information Sciences, Beijing 100193, China; (S.T.); (J.L.)
| | - Jun Lu
- Beijing Academy of Quantum Information Sciences, Beijing 100193, China; (S.T.); (J.L.)
| | - Dahai Wei
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China; (D.Z.); (Z.Z.); (Y.X.)
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100190, China
- Correspondence: ; Tel.: +86-10-8230-4515; Fax: +86-10-8230-5056
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