Quasi-particle dispersion and density of states in superconducting state of iron pnictide system

2014 ◽  
Vol 4 (5) ◽  
pp. 400-414 ◽  
Author(s):  
Luxmi Rani ◽  
. Ajay
Keyword(s):  
Density Of States ◽  
Superconducting State ◽  
Particle Dispersion ◽  
Quasi Particle ◽  
Iron Pnictide

scholarly journals Two-band Bardeen-Cooper-Schrieffer superconducting state of the iron pnictide compound Ba(Fe0.9Co0.1)2As2

2011 ◽  
Vol 83 (14) ◽  
Author(s):  
E. G. Maksimov ◽  
A. E. Karakozov ◽  
B. P. Gorshunov ◽  
A. S. Prokhorov ◽  
A. A. Voronkov ◽  
...  
Keyword(s):  
Superconducting State ◽  
Iron Pnictide

scholarly journals Impurity-Induced Local Magnetism and Density of States in the Superconducting State ofYBa2Cu3O7

2006 ◽  
Vol 96 (12) ◽  
Author(s):  
S. Ouazi ◽  
J. Bobroff ◽  
H. Alloul ◽  
M. Le Tacon ◽  
N. Blanchard ◽  
...  
Keyword(s):  
Density Of States ◽  
Superconducting State

Quasiparticle density of states in high-Tc superconductors in the superconducting state

2007 ◽  
Vol 463-465 ◽  
pp. 123-125
Author(s):  
T. Hata ◽  
S. Onari ◽  
S. Honda ◽  
H. Itoh ◽  
Y. Tanaka ◽  
...  
Keyword(s):  
Density Of States ◽  
Superconducting State ◽  
High Tc Superconductors ◽  
High Tc ◽  
Quasiparticle Density

Direct evidence of uneven dxz and dyz orbital occupation in the superconducting state of iron pnictide

2020 ◽  
Vol 102 (19) ◽  
Author(s):  
Damian Rybicki ◽  
Marcin Sikora ◽  
Joanna Stępień ◽  
Łukasz Gondek ◽  
Kamil Goc ◽  
...  
Keyword(s):  
Superconducting State ◽  
Direct Evidence ◽  
Iron Pnictide ◽  
Orbital Occupation

EFFECTIVE MASS, LANDAU INTERACTION FUNCTION AND SELF-ENERGY OF AN ELECTRON LIQUID

1992 ◽  
Vol 06 (19) ◽  
pp. 3089-3145 ◽  
Author(s):  
HIROSHI YASUHARA ◽  
YUMI OUSAKA
Keyword(s):  
Effective Mass ◽  
Pauli Principle ◽  
Particle Dispersion ◽  
Mass Ratio ◽  
Correct Evaluation ◽  
Quasi Particle ◽  
Interaction Function ◽  
Self Energy ◽  
Vertex Corrections ◽  
Monotonically Decreasing Function

A review is given of the calculations of the effective mass m* for an electron liquid at metallic densities. The review will be helpful to understand that a great deal of difficulties are involved in estimating the quasi-particle dispersion in the vicinity of the Fermi level. It is emphasized that a systematic consideration of vertex corrections in accordance with the Pauli principle up to higher orders in calculating the Landau interaction function fσσ'( p , p ') or the self-energy Σ( p , ε) is indispensable for the correct evaluation of m* for rs>1. It is concluded that the mass ratio m*/m is a monotonically decreasing function of rs and remains smaller than unity throughout the whole region of metallic densities. The deviation of m*/m from unity is as small as 8% even at the lowest metallic densities. From general considerations we shall also discuss the effects of Σ( p , ε) on the overall features of the quasi-particle dispersion.

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