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Superconducting Gap Anisotropy and Quasiparticle Interactions: a Doping Dependent ARPES Study
J. Mesot, M. R. Norman, H. Ding +11
Comparing ARPES measurements on Bi2212 with penetration depth data, we show that a description of the nodal excitations of the d-wave superconducting state in terms of non-interact…
Photoelectron Escape Depth and Inelastic Secondaries in High Temperature Superconductors
M. R. Norman, M. Randeria, H. Ding +1
We calculate the photoelectron escape depth in the high temperature superconductor Bi2212 by use of electron energy-loss spectroscopy data. We find that the escape depth is only 3…
Extraction of the Electron Self-Energy from Angle Resolved Photoemission Data: Application to Bi2212
M. R. Norman, H. Ding, H. Fretwell +2
The self-energy , the fundamental function which describes the effects of many-body interactions on an electron in a solid, is usually difficult to obtain directly fr…
Role of Spatial Amplitude Fluctuations in Highly Disordered s-Wave Superconductors
Amit Ghosal, Mohit Randeria, Nandini Trivedi
The effect of non-magnetic impurities on 2D s-wave superconductors is studied beyond the weak disorder regime. Within the Bogoliubov-de Gennes (BdG) framework, the local pairing am…
Upper Bounds on the Superfluid Stiffness of Disordered Systems
Arun Paramekanti, Nandini Trivedi, Mohit Randeria
We derive several upper bounds for the superfluid stiffness for Bose and Fermi systems in terms of expectation values of local operators using linear response theory and vari…