Vortex dynamics in the two-dimensional BCS-BEC crossover [PDF]
Nature Communications, 2022 The crossover between the limiting ground states of fermionic systems, the so called BCS-BEC crossover, is of interest to superconductor and ultracold atomic gases communities.
Max Heyl +7 more
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Thermal conductivity of an ultracold Fermi gas in the BCS-BEC crossover [PDF]
Scientific Reports, 2021 Recent experiments on sound waves in a unitary Fermi gas reveal many transport properties about strongly interacting fermions. Sound propagates through the coupling of momentum and heat transport, and attenuates strongly with the presence of a phase ...
Hang Zhou, Yongli Ma
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Giant superconducting fluctuations in the compensated semimetal FeSe at the BCS–BEC crossover [PDF]
Nature Communications, 2016 The crossover between the weak-coupling limit and strong-coupling limit provides important information for quantum bound states of interacting fermions. Here, Kasahara et al.
S. Kasahara +14 more
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Thermal BCS-BEC Crossovers in Finite Systems [PDF]
EntropyWe investigate the thermal evolution of fermionic pairings in a finite-size SU(2) × SU(2) complex model, drawing an analogy to the BCS-BEC crossover in interacting quantum gases.
Angelo Plastino +2 more
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Bypassing the lattice BCS–BEC crossover in strongly correlated superconductors through multiorbital physics [PDF]
npj Quantum MaterialsSuperconductivity emerges from the spatial coherence of a macroscopic condensate of Cooper pairs. Increasingly strong binding and localization of electrons into these pairs compromises the condensate’s phase stiffness, thereby limiting critical ...
Niklas Witt +5 more
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Tuning the BCS-BEC crossover of electron-hole pairing with pressure [PDF]
Nature CommunicationsIn graphite, a moderate magnetic field confines electrons and holes into their lowest Landau levels. In the extreme quantum limit, two insulating states with a dome-like field dependence of the their critical temperatures are induced by the magnetic ...
Yuhao Ye +7 more
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Thermoelectric signature of quantum critical phase in a doped spin-liquid candidate [PDF]
Nature Communications, 2023 Quantum spin liquid is a nontrivial magnetic state of longstanding interest, in which spins are strongly correlated and entangled but do not order; further intriguing is its doped version, which possibly hosts strange metal and unconventional ...
K. Wakamatsu +5 more
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Magnetic field tuning of an excitonic insulator between the weak and strong coupling regimes in quantum limit graphite [PDF]
Scientific Reports, 2017 The excitonic insulator phase has long been predicted to form in proximity to a band gap opening in the underlying band structure. The character of the pairing is conjectured to crossover from weak (BCS-like) to strong coupling (BEC-like) as the ...
Z. Zhu +6 more
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Quantum Thermalization Dynamics of Fermi Gases Quenched to the BEC‐BCS Crossover [PDF]
Advanced ScienceUnderstanding nonequilibrium dynamics of strongly interacting quantum systems represents one of the most challenging problems in many‐body physics.
Licheng Yi +4 more
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Condensed Matter, 2021 We calculate the parameters of the Ginzburg–Landau (GL) equation of a three-dimensional attractive Fermi gas around the superfluid critical temperature.
Filippo Pascucci +2 more
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