6 citations · 11 across the 10 of their papers we have counts for
10 papers
Pair size versus coherence length and quantum geometry in the spin-orbit coupled BCS-BEC crossover
R. N. Kalkan, M. Iskin
We investigate the interplay between pairing correlations and quantum geometry in the spin-orbit-coupled BCS-BEC crossover. Working in the helicity basis, we derive the exact pair-…
Experimental signatures of bosonic pairing in a two-component Bose gas
Omar Almonajed, M. Iskin, M. Ö. Oktel
Two-component bosonic droplets are commonly described within Bogoliubov theory, where beyond-mean-field quantum fluctuations stabilize the system against mean-field collapse. In th…
Vortex-core size and quantum geometry in flat-band superconductors
M. Özkurt, M. Iskin
We investigate the real-space vortex structure of a flat-band superconductor described by the attractive Hubbard model on the Mielke checkerboard lattice. Using a momentum-space me…
Superconductivity beyond band geometry: emergence of pair quantum geometry
Mehmet Akif Keskiner, M. Iskin
Quantum geometry is known to influence the effective mass of single particles in multiband systems through the geometric properties of Bloch states. Here, we show that this connect…
Correlation lengths of flat-band superconductivity from quantum geometry
S. S. Elden, M. Iskin
Flat-band superconductors provide a regime in which kinetic energy is quenched, so that pairing is governed primarily by interactions and quantum geometry. We investigate character…
Self-consistent inclusion of disorder in the BCS-BEC crossover near the critical temperature
M. Iskin
We develop a systematic theoretical approach to incorporate the effects of a static white-noise disorder into the BCS-BEC crossover near the critical temperature () of the sup…
Quenched disorder and the BCS-BEC crossover in the Hubbard model
M. Iskin
We study the impact of weak quenched disorder on the BCS-BEC crossover in the Hubbard model within a functional-integral approach. By deriving the thermodynamic potential up to sec…
Structure factors and quantum geometry in multiband BCS superconductors
M. Iskin
We consider multiband BCS superconductors that exhibit time-reversal symmetry and uniform pairing, and analyze their dynamic density and spin structure factors using linear-respons…
Pair size and quantum geometry in a multiband Hubbard model
M. Iskin
We study the size of two-body bound states and Cooper pairs within a multiband Hubbard model that features time-reversal symmetry and uniform pairing on a generic lattice. Our anal…
Variational approach for the two-body problem in a multiband extended-Hubbard model
M. Iskin
Considering a spin-up and a spin-down fermion in a generic tight-binding lattice with a multi-site basis, we investigate the two-body problem using a multiband extended-Hubbard mod…