16 citations · 31 across the 3 of their papers we have counts for
3 papers
cond-mat.supr-con2012★ 8 cited
Band filling effects on coherence lengths and penetration depth in the two-orbital negative-U Hubbard model of superconductivity
Grzegorz Litak, Teet Örd, Küllike Rägo +1
The two-orbital superconducting state is modeled by on-site intra-orbital negative-U Hubbard correlations together with inter-orbital pair-transfer interactions. The critical tempe…
cond-mat.supr-con2011★ 16 cited
Coherence lengths for superconductivity in the two-orbital negative-U Hubbard model
G. Litak, T. Ord, K. Rago +1
We study the peculiarities of coherency in the superconductivity of two-orbital system. The superconducting phase transition is caused here by the on-site intra-orbital attractions…
cond-mat.supr-con2010★ 7 cited
On the interband pairing in doped graphane
Nikolai Kristoffel, Küllike Rägo
An estimation shows that the interband pairing channel between the valence band components of doped graphane can support a superconducting transition temperature (or a contribution…