Results 41 to 50 of about 5,965 (154)
Relativistic BCS-BEC Crossover at Zero Temperature [PDF]
, 2007 We investigate the BCS-BEC crossover at zero temperature in the frame of a relativistic model. The universality of the BCS-BEC crossover for non-relativistic systems breaks down in relativistic case and the crossover can be induced by changing the ...
A. J. Leggett +6 more
core +2 more sources
Advances in Condensed Matter Physics, Volume 2011, Issue 1, 2011., 2011 Recently, it has been possible to design independently contacted electron‐hole bilayers (EHBLs) with carrier densities <5 × 1010 cm2 in each layer and a separation of 10–20 nm in a GaAs/AlGaAs system. In these EHBLs, the interlayer interaction can be stronger than the intralayer interactions.
K. Das Gupta +8 more
wiley +1 more source
Advances in Condensed Matter Physics, Volume 2010, Issue 1, 2010., 2010 Explicit and implicit experimental evidence for charge density wave (CDW) presence in high‐Tc superconducting oxides is analyzed. The theory of CDW superconductors is presented. It is shown that the observed pseudogaps and dip‐hump structures in tunnel and photoemission spectra are manifestations of the same CDW gapping of the quasiparticle density of ...
A. M. Gabovich +6 more
wiley +1 more source
Collective excitations of a charged Fermi superfluid in the BCS-BEC crossover
New Journal of Physics, 2023 We consider collective excitations in the superfluid state of Fermi condensed charged gases. The dispersion and damping of collective excitations at nonzero temperatures are examined, and the coexistence and interaction of different branches of ...
S N Klimin +3 more
doaj +1 more source
, 2014 This chapter presents the crossover from the Bardeen-Cooper-Schrieffer (BCS) state of weakly-correlated pairs of fermions to the Bose-Einstein condensation (BEC) of diatomic molecules in the atomic Fermi gas. Our aim is to provide a pedagogical review of
Parish, Meera M.
core +1 more source
BEC-BCS crossover in a cold and magnetized two color NJL model [PDF]
, 2016 The BEC-BCS crossover for a NJL model with diquark interactions is studied in the presence of an external magnetic field. Particular attention is paid to different regularization schemes used in the literature.
Allen, P. G. +5 more
core +2 more sources
, 2010 We investigate single-particle excitations and strong-coupling effects in the BCS-BEC crossover regime of a superfluid Fermi gas. Including phase and amplitude fluctuations of the superfluid order parameter within a $T$-matrix theory, we calculate the ...
A. J. Leggett +5 more
core +1 more source
Popov approximation for composite bosons in the BCS-BEC crossover
, 2004 Theoretical treatments of the BCS-BEC crossover need to provide as accurate as possible descriptions of the two regimes where the diluteness condition applies, either in terms of the constituent fermions (BCS limit) or of the composite bosons which form ...
A. J. Leggett +11 more
core +1 more source
Advancing Superconductivity with Interface Engineering
Advanced Materials, Volume 36, Issue 42, October 17, 2024.The development of superconducting materials with high transition temperatures (TC) has sparked intense interest. Efforts have been focused on interfaces of materials, including superconductivity induced at non‐superconducting material interfaces or augmenting TC at the interface between superconducting/non‐superconducting materials.
Yichen Liu +10 more
wiley +1 more source
Pseudogap in fermionic density of states in the BCS-BEC crossover of atomic Fermi gases
, 2009 We study pseudogap behaviors of ultracold Fermi gases in the BCS-BEC crossover region. We calculate the density of states (DOS), as well as the single-particle spectral weight, above the superfluid transition temperature $T_{\rm c}$ including pairing ...
A. Damascelli +14 more
core +1 more source