18 citations · 119 across the 18 of their papers we have counts for
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Spatial correlation of fluctuations in multi-component superconducting systems
T. Örd, A. Vargunin, K. Rägo
We show that spatial variation and correlation of superconductivity fluctuations in a two-band model are scaled by two characteristic lengths. This results in substantially more co…
Peculiarities of length scales in a two-orbital superconductor
G. Litak, T. Örd, K. Rägo +1
We study the spatial behaviour of coherency and magnetic field in a two-orbital superconductor. The superconducting phase transition is caused here by the on-site intra-orbital att…
Two-gap superconductivity: interband interaction in the role of external field
Artjom Vargunin, Küllike Rägo, Teet Örd
We show that weak interband pair-transfer interaction affects weaker-superconductivity component of a two-gap system as an external field associated with the order parameter, simil…
Correlations of superconducting fluctuations in a two-gap system
Artjom Vargunin, Teet Örd
We derive analytically the spatial correlation functions for gap fluctuations in two-band scenario with intra- and interband pair-transfer interactions. These functions demonstrate…
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…
Critical and non-critical coherence lengths in a two-band superconductor
Teet Örd, Küllike Rägo, Artjom Vargunin
We study the peculiarities of coherency in a two-gap superconductor. The both intraband couplings, inducing superconductivity in the independent bands, and interband pair-transfer…