Gap Anisotropy in the Energy Spectrum of Superconductors

Anomalous attenuation of longitudinal ultrasound in the intermediate state of pure type I superconductor

“…In the present research 1) , the additional information on the dependence of the ultrasound absorption on the frequency of longitudinal ultrasonic signal f and on the orientation of magnetic field H in an IS of high pure Ga single crystal is reported 2) .…”

“…The research results of the ultrasound absorption in high pure superconductors are successfully used to research the energy gap in the energy spectrum of superconductors and its anisotropy (see the review [1]). At the same time, the research of the intermediate state (IS) in the high pure type I superconductors, using the ultrasound, did not lead to any significant results (see the review [2]).…”

Nonequilibrium interband phase textures induced by vortex splitting in two-band superconductors

“…It is important to remark that all real superconductors have the ability to change the isotropic magnitude, phase, and temperature evolution of the gap. These modifications can be introduced by the effects of the anisotropy of the Fermi surface [104] and pairing interaction [105], which modify the magnitude of the gap. Gross, Massidda, and their collaborators are constructing an ultimate modern version of the ab initio calculation of the anisotropic gap [106].…”