Nota de FísicaPublicado
Intrinsic Magnetic Torque at Low Magnetic Induction
Mauro M. Doria; I. G. Oliveira
1993
Dados da publicação
- Autores
- Mauro M. Doria; I. G. Oliveira
- Tipo
- Nota de Física
- Status
- Publicado
- Data de publicação
- 1993
- Descrição
- Using anisotropic London theory we obtain the intrinsic magnetic torque for extreme type II uniaxial superconductors for any value of the magnetic induction. We consider the vortex lines straight and take into account the contribution of the supercurrents flowing inside the vortex core within the London theory. We show that the interline and intraline free energies give opposite torque contributions, the first drives the magnetic induction parallel to the superconductor's axis of symmetry and the second orthogonal to it. At high magnetic induction our torque expression generalizes <math>V\,\!</math>. Kogan's formula since it has no free parameters other than the anisotropy <math>\gamma = m_{1}/m_{3}\,\!</math> and the Ginzburg-Landau parameter <math> k\,\!</math>. At low magnetic induction we propose a way to observe vortex chains effects in the total torque based on the fact that London theory is linear and the energy to make a single vortex line in space is independent of the magnetic induction.
- Ano
- 1993
- Número
- CBPF-NF-044/93
- Vínculo com tese
- Não
- Vínculo com bolsa
- Não