48 citations · 257 across the 18 of their papers we have counts for
7 papers · 1 filter
Re-entrant Fulde-Ferrell-Larkin-Ovchinnikov State in Small-Sized Superconductors
Tom Kim, Chih-Chun Chien, Shi-Zeng Lin
We study the effect of a parallel magnetic field in a thin and small superconductor. The field suppresses superconductivity through Zeeman coupling while stabilizes the Fulde-Ferre…
Geometry induced local thermal current from cold to hot in a classical harmonic system
Palak Dugar, Chih-Chun Chien
The second law of thermodynamics requires the overall thermal current to flow from hot to cold. However, it does not forbid a local thermal current from flowing from cold to hot. B…
Thermal Uhlmann Chern number from the Uhlmann connection for extracting topological properties of mixed states
Yan He, Hao Guo, Chih-Chun Chien
The Berry phase is a geometric phase of a pure state when the system is adiabatically transported along a loop in its parameter space. The concept of geometric phase has been gener…
Many-body multi-valuedness of particle-current variance in closed and open cold-atom systems
Mekena Metcalf, Chen-Yen Lai, Massimiliano Di Ventra +1
The quantum variance of an observable is a fundamental quantity in quantum mechanics, and the variance provides additional information other than the average itself. By examining t…
Tunable current circulation in triangular quantum-dot metastructures
Chen-Yen Lai, Massimiliano Di Ventra, Michael Scheibner +1
Advances in fabrication and control of quantum dots allow the realization of metastructures that may exhibit novel electrical transport phenomena. Here, we investigate the electric…
BCS thermal vacuum of fermionic superfluids and its perturbation theory
Xu-Yang Hou, Ziwen Huang, Hao Guo +2
The thermal field theory is applied to fermionic superfluids by doubling the degrees of freedom of the BCS theory. We construct the two-mode states and the corresponding Bogoliubov…