Learning pairing symmetries in disordered superconductors using spin-polarized local density of states
نویسندگان
چکیده
منابع مشابه
Density Functional Theory of Spin-Polarized Disordered Quantum Dots
Using density functional theory, we investigate fluctuations of the ground-state energy of spin-polarized, disordered quantum dots in the metallic regime. To compare to experiment, we evaluate the distribution of addition energies and find a convolution of the Wigner-Dyson distribution, expected for noninteracting electrons, with a narrower Gaussian distribution due to interactions. The third m...
متن کاملSpin-polarized quasiparticle transport in cuprate superconductors
The effects of spin-polarized quasiparticle transport in superconducting YBa2Cu3O7−δ (YBCO) epitaxial films are investigated by means of current injection into perovskite ferromagnet-insulatorsuperconductor (F-I-S) heterostructures. These effects are compared with the injection of simple quasiparticles into control samples of perovskite non-magnetic metal-insulator-superconductor (N-IS). System...
متن کاملSpatial fluctuations of the pairing potential in disordered superconductors
We study the effect of site diagonal, non-magnetic, disorder on the a pairing amplitude in an extended Hubbard model with the intersite attraction. Analyzing fluctuations of a pairing potential we discuss the instability of mixed solutions, ’s + d’ and ’s + id’, in presence of disorder. The influence of disorder on extended s– and d–wave superconductors appear to be comparable but in certain re...
متن کاملNesting symmetries and diffusion in disordered d-wave superconductors.
The low-energy density of states (DOS) of disordered 2D d-wave superconductors is extremely sensitive to details of both the disorder model and the electronic band structure. Using diagrammatic methods and numerical solutions of the Bogoliubov--de Gennes equations, we show that the physical origin of this sensitivity is the existence of a novel diffusive mode with momentum close to (pi,pi) whic...
متن کاملLocal modulations of the spin-fluctuation-mediated pairing interaction by impurities in d-wave superconductors
A. T. Rømer,1 S. Graser,2 T. S. Nunner,3 P. J. Hirschfeld,4 and B. M. Andersen1 1Niels Bohr Institute, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark 2Theoretical Physics III, Center for Electronic Correlations and Magnetism, Institute of Physics, University of Augsburg, D-86135 Augsburg, Germany 3Dahlem Center for Complex Quantum Systems and Fachbereich Physik, Fre...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: New Journal of Physics
سال: 2020
ISSN: 1367-2630
DOI: 10.1088/1367-2630/ab8261