51 citations · 166 across the 7 of their papers we have counts for
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Determining gap nodal structures in Fe-based superconductors: angle-dependence of the low temperature specific heat in an applied magnetic field
S. Graser, G. R. Boyd, Chao Cao +3
Since the discovery of high-Tc LaO_1-xF_xFeAs, and other such systems based on FeAs layers, several proposals have been made for the superconducting order parameter Delta_k, on bot…
Local quasiparticle lifetimes in a d-wave superconductor
S. Graser, P. J. Hirschfeld, D. J. Scalapino
Scanning tunnelling spectroscopy (STS) measurements find that the surface of Bi-2212 is characterized by nanoscale sized regions, "gap patches," which have different magnitudes for…
Andreev bound states at a cuprate grain boundary junction: A lower bound for the upper critical field
M. Wagenknecht, D. Koelle, R. Kleiner +6
We investigate in-plane quasiparticle tunneling across thin film grain boundary junctions (GBJs) of the electron-doped cuprate LaCeCuO in magnetic fields up to $B…
Structure of BSCCO supermodulation from ab initio calculations
Y. He, S. Graser, P. J. Hirschfeld +1
We present results of density functional theory (DFT) calculation of the structural supermodulation in BSCCO-2212 structure, and show that the supermodulation is indeed a spontaneo…
Shadow on the wall cast by an Abrikosov vortex
S. Graser, C. Iniotakis, T. Dahm +1
At the surface of a d-wave superconductor, a zero-energy peak in the quasiparticle spectrum can be observed. This peak appears due to Andreev bound states and is maximal if the nod…
Influence of Fermi surface topology on the quasiparticle spectrum in the vortex state
S. Graser, T. Dahm, N. Schopohl
We study the influence of Fermi surface topology on the quasiparticle density of states in the vortex state of type II superconductors. We observe that the field dependence and the…