14 citations · 20 across the 2 of their papers we have counts for
13 papers
Heat Capacity of a Strongly-Interacting Fermi Gas
J. Kinast, A. Turlapov, J. E. Thomas
We report on the measurement of the heat capacity for an optically-trapped, strongly-interacting Fermi gas of atoms. In the experiments, a precise input of energy to the gas is fol…
The pseudogap state in superconductors: Extended Hartree approach to time-dependent Ginzburg-Landau Theory
Jelena Stajic, Andrew Iyengar, Qijin Chen +1
It is well known that conventional pairing fluctuation theory at the Hartree level leads to a normal state pseudogap in the fermionic spectrum. Our goal is to extend this Hartree a…
Pairing fluctuation theory of high superconductivity in the presence of nonmagnetic impurities
Qijin Chen, J. R. Schrieffer
The pseudogap phenomena in the cuprate superconductors requires a theory beyond the mean field BCS level. A natural candidate is to include strong pairing fluctuations, and treat t…
Magnetic Field Effects in the Pseudogap Phase: A Precursor Superconductivity Scenario
Andrew P. Iyengar, Ying-Jer Kao, Qijin Chen +1
We demonstrate that the observed dependences of and on small magnetic fields can be readily understood in a precursor superconductivity approach to the pseudogap phase.…
Origin of the pseudogap phase: Precursor superconductivity versus a competing energy gap scenario
K. Levin, Qijin Chen, Ioan Kosztin +3
In the last few years evidence has been accumulating that there are a multiplicity of energy scales which characterize superconductivity in the underdoped cuprates. In contrast to…
Magnetic Field Effects in the Pseudogap Phase: A Competing Energy Gap Scenario for Precursor Superconductivity
Ying-Jer Kao, Andrew P. Iyengar, Qijin Chen +1
We study the sensitivity of T_c and T^* to low fields, H, within the pseudogap state using a BCS-based approach extended to arbitrary coupling. We find that T^* and T_c, which are…