Vortex imaging in magnesium diboride with H perpendicular to cстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 29 мая 2015 г.
Аннотация:We have performed scanning tunneling spectroscopy imaging of vortices in MgB2 with both the tunneling current and the applied field perpendicular to the crystalline c axis. This revealed a well ordered vortex lattice with a relatively low anisotropy of 1.19+/-0.04. This is significantly below the upper-critical-field anisotropy, but in good agreement with theoretical predictions for the penetration depth anisotropy, which at low fields is expected to be dominated by the pi band. The value of the anisotropy is smaller than estimated from small-angle neutron-scattering measurement.