Dynamical regimes of kinematic vortices in the resistive state of a mesoscopic superconducting bridge
| Autor: | Edson Sardella, Rafael Zadorosny, A. L. Malvezzi, Alice Presotto |
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| Přispěvatelé: | Universidade Estadual Paulista (Unesp) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Superconductivity
Physics Mesoscopic physics Condensed matter physics TDGL kinematic vortices 02 engineering and technology Kinematics Vorticity 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Vortex Magnetic field mesoscopic superconductor voltage oscillations Condensed Matter::Superconductivity 0103 physical sciences Ginzburg–Landau theory General Materials Science bridge 010306 general physics 0210 nano-technology dynamical regimes Phase diagram |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| Popis: | Made available in DSpace on 2020-12-12T02:22:22Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-10-14 In this work, we studied the dynamics of the kinematic vortices (kV) in a mesoscopic superconductor under the influence of external applied magnetic fields (H) and transport currents (J tr). A J tr(H) phase diagram is determined. We show that the vortex dynamics are profoundly affected by the presence of constrictions and by H. We find that between the Meissner and normal states, the resistive state is comprehended by three distinct states. One of these states is a kinematic vortex-antivortex pair for low values of H. For moderate values of fields, the kV state is unpaired and only a single kinematic vortex exists. In the high field regime, the kinematic vortex becomes an Abrikosov-like state with a lower velocity. It was also shown that for tenths of picoseconds, a surface barrier effect acts over the instantaneous velocity of the kV. Departamento de Física e Química Unesp Faculdade de Engenharia de Ilha Solteira Departamento de Física Unesp Faculdade de Ciências Departamento de Física e Química Unesp Faculdade de Engenharia de Ilha Solteira Departamento de Física Unesp Faculdade de Ciências |
| Databáze: | OpenAIRE |
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