Anisotropic pinning and the mixed state galvanothermomagnetic properties of superconductors a phenomenological approach

• Veröffentlicht in: Физика низких температур
• Datum: 1997
• 1. Verfasser: Shklovskij, V.A.
• Format: Artikel
• Sprache: Englisch
• Veröffentlicht: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 1997
• Schlagworte: Кpаткие сообщения
• Online Zugang: https://nasplib.isofts.kiev.ua/handle/123456789/175408
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Zitieren: Anisotropic pinning and the mixed state galvanothermomagnetic properties of superconductors a phenomenological approach / V.A. Shklovskij // Физика низких температур. — 1997. — Т. 23, № 10. — С. 1134-1138. — Бібліогр.: 9 назв. — англ.

In the presence of isotropic and anisotropic pinning the vortex dynamics is discussed in terms of
 phenomenologically introduced, nonlinear viscosities. The formulas tor linear galvanothermomagnetic
 effects are derived and analyzed under the condition at which the transport current or temperature
 gradient is directed at arbitrary angle with respect to the unidirected twins, which cause the anisotropic
 pinning. It is shown that two new effects which appear due to the anisotropic pinning, namely (with
 respect to the reversal of the magnetic field direction) even transverse and odd longitudinal voltage,
 have a distinct origin. The first is due to the guided vortex motion, while the second appears only when
 anisotropic (in contrast with isotropic) pinning changes the Hall drag coefficient. We also show that the
 last effect might be masked in the experiment by a large, odd contribution, which has the same angular
 dependence and which appears due to the Ettingshausen effect In order to clarify the problem of
 influence of the twins on the Hall drag coefficient, we discuss the possibility of separating these two
 contributions in the experiment.