Zobrazeno 1 - 10
of 5 624
pro vyhledávání: '"Coffey L."'
Autor:
Coffey, L.
The Fermi surface anisotropy of a pseudo-gap in the spectral weight, caused by superconducting fluctuations or anti-ferromagnetic fluctuations, is calculated for a tight binding band. The importance of the Fermi surface saddle point, or hot spot, is
Externí odkaz:
http://arxiv.org/abs/1611.09305
Autor:
Ratrey P; Department of Chemical Sciences, SSPC the SFI Research Centre for Pharmaceuticals, Bernal Institute, University of Limerick, Limerick V94 T9PX, Ireland. Electronic address: Poonam.ratrey@ul.ie., Bhattacharya S; Department of Physics, SSPC the SFI Research Centre for Pharmaceuticals, Bernal Institute, University of Limerick, Limerick V94 T9PX, Ireland. Electronic address: shayon.bhattacharya@ul.ie., Coffey L; Department of Chemical Sciences, SSPC the SFI Research Centre for Pharmaceuticals, Bernal Institute, University of Limerick, Limerick V94 T9PX, Ireland. Electronic address: laura.coffey@ul.ie., Thompson D; Department of Physics, SSPC the SFI Research Centre for Pharmaceuticals, Bernal Institute, University of Limerick, Limerick V94 T9PX, Ireland. Electronic address: Damien.thompson@ul.ie., Hudson SP; Department of Chemical Sciences, SSPC the SFI Research Centre for Pharmaceuticals, Bernal Institute, University of Limerick, Limerick V94 T9PX, Ireland. Electronic address: Sarah.hudson@ul.ie.
Publikováno v:
Colloids and surfaces. B, Biointerfaces [Colloids Surf B Biointerfaces] 2024 Sep 18; Vol. 245, pp. 114255. Date of Electronic Publication: 2024 Sep 18.
Autor:
Coffey, L.
Normal state superconducting fluctuations are calculated for the case of a tight binding bandstructure. The resulting electronic self energy and spectral weight are anisotropic on the Fermi surface. For certain values of the chemical potential $\mu$,
Externí odkaz:
http://arxiv.org/abs/1503.04747
Autor:
Coffey, L.
A phenomenological strong coupling model that has been used to analyze superconducting- insulator-superconducting (SIS) break junction experiments on optimal to overdoped Bi-2212 is modified to include a pseudogap. The calculated density of states an
Externí odkaz:
http://arxiv.org/abs/1307.5008
Autor:
Ahmadi, O., Coffey, L.
Results are presented for the temperature and frequency dependence of the real and imaginary parts of the diagonal self energy for a d-wave superconductor. An Eliashberg analysis, which has been successful in recent fitting of superconductor-insulato
Externí odkaz:
http://arxiv.org/abs/1205.2381
A d-wave, Eliashberg analysis of break junction and STM tunneling spectra on BiSrCaCuO (Bi2212) reveals that a spectral dip feature is directly linked to strong electronic coupling to a narrow boson spectrum, evidenced by a large peak in the boson sp
Externí odkaz:
http://arxiv.org/abs/cond-mat/0510057
Autor:
Coffey, L.
Recent SIS tunneling conductance measurements on a range of Bi2212 crystals with varying oxygen doping have revealed new information on the behavior of a dip feature in the tunneling conductance. Calculations presented here show that the observed var
Externí odkaz:
http://arxiv.org/abs/cond-mat/0103518
Autor:
Yusof, Z., Coffey, L.
The asymmetry in the conductance peaks shown in recent PCT and STM measurements may be a signature of the d-wave gap. This is based on our model for the tunneling density of states (DOS) which incorporates the group velocity, tunneling directionality
Externí odkaz:
http://arxiv.org/abs/cond-mat/9803139
A theoretical model for tunneling spectroscopy employing tight-binding band structure, d-wave gap symmetry, group velocity, and tunneling directionality can exhibit a wide range of characteristics similar to the ones found in tunneling experiments on
Externí odkaz:
http://arxiv.org/abs/cond-mat/9709249
ARPES measurements on HiTc superconductors such as BiSrCaCuO reveal a quasiparticle peak, a broad background and a dip. The background may originate from inelastic spin fluctuation emission. Calculations of the spectral weight are presented incorpora
Externí odkaz:
http://arxiv.org/abs/cond-mat/9702179