14 citations · 20 across the 2 of their papers we have counts for
14 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…
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…
Short Coherence Length Superconductivity: A Generalization of BCS Theory for the Underdoped Cuprates
K. Levin, Qijin Chen, Ioan Kosztin
On the basis of the observed short coherence lengths in the cuprates we argue that a BCS-Bose-Einstein condensation (BEC) crossover approach is an appropriate starting point for co…
Nodal Quasiparticles versus Phase Fluctuations in High Tc Superconductors: An Intermediate Scenario
Qijin Chen, Ioan Kosztin, K. Levin
We explore a BCS Bose Einstein crossover scenario for and its implications for the superfluid density and specific heat. The low lying excitations consist of no…