Kinematic vortices in mesoscopic superconductors with a constriction

• Grant number: 15/21189-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: March 01, 2016
• End date: February 28, 2017
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Edson Sardella
• Grantee: Alexssandre de Oliveira Junior
• Host Institution: Faculdade de Ciências (FC). Universidade Estadual Paulista (UNESP). Campus de Bauru. Bauru , SP, Brazil

Abstract

Advances in nanofabrication techniques of materials over the last two decadeshave enabled important achievements in the study of superconductors in the meso and nanoscopic scales. It is well known that superconductorsof low dimensionality, with size of the fundamental lengths $\xi$ (coherence length) and $\lambda$ (London penetration length) exhibit important effects that are not observed inmaterials on a macroscopic scale. In this project, we will study kinematic vortices in rectangular superconducting films with a constriction at the center. Current crowding effects in the formation of vortex-antivortex (V-Av) pairs in the constriction will be studied. The relationship between the VAV's and the $\gamma$ parameter in the generalized time dependent Ginzburg-Landau theory will also be investigated.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

CADORIM, LEONARDO RODRIGUES; DE OLIVEIRA JUNIOR, ALEXSSANDRE; SARDELLA, EDSON. Ultra-fast kinematic vortices in mesoscopic superconductors: the effect of the self-field. SCIENTIFIC REPORTS, v. 10, n. 1, OCT 29 2020. (12/04388-0, 20/03947-2, 15/21189-0)