434 research outputs found
Analysis of Magnetic Field-Angle Dependent Electronic Raman Scattering to Probe the Superconducting Gap
We study the field-angle resolved electronic Raman scattering in
2-dimensional d-wave superconducting vortex states theoretically by
quasi-classical approximation, the so-called Doppler-shift method. An analytic
expression is obtained for the field angle dependence of the Raman scattering
amplitude at zero temperature. After numerical integration, we obtain the
scattering intensity for various field angles by changing the Raman shift
energy. Field-angle resolved electronic Raman scattering turns out to be an
effective method for probing unconventional superconducting gap structures. It
shows a novel phenomenon: reversal of extrema as a function of frequency
without changing temperature or field magnitude.Comment: 6 pages, 5 figures. SCES2013 Proceedings (to be published in JPS
Conf. Proc.
Impurity Effect on the Local Density of States around a Vortex in Noncentrosymmetric Superconductors
We numerically study the effect of non-magnetic impurities on the vortex
bound states in noncentrosymmetric systems. The local density of states (LDOS)
around a vortex is calculated by means of the quasiclassical Green's function
method. We find that the zero energy peak of the LDOS splits off with
increasing the impurity scattering rate.Comment: 6 pages, 4 figures; Proc. of SCES201
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