Superfluid density and penetration depth in Fe-pnictides
| dc.creator | Vorontsov, A. B. | |
| dc.creator | Vavilov, M. G. | |
| dc.creator | Chubukov, A. V. | |
| dc.date | 2009-01-06 | |
| dc.date | 2009-03-23 | |
| dc.date.accessioned | 2026-07-07T13:07:42Z | |
| dc.date.available | 2026-07-07T13:07:42Z | |
| dc.description | We consider the superfluid density $ρ_s (T)$ in a two-band superconductor with extended s-wave symmetry ($s^+$) in the presence of non-magnetic impurities and apply the results to Fe-pnictides. We show that the behavior of the superfluid density is essentially the same as in an ordinary s-wave superconductor with magnetic impurities. We show that, for moderate to strong inter-band impurity scattering, $ρ_s (T)$ behaves as a power-law $T^n$ with $n\approx 1.6\div2$ over a wide range of $T$. We argue that the power-law behavior is consistent with recent experiments on the penetration depth $λ(T)$ in BaFe$_2$As$_2$, but disagree quantitatively with the data on LaFePO. | |
| dc.description | 4 pages, 2 figures; replaced with updated version | |
| dc.identifier | https://arxiv.org/abs/0901.0719 | |
| dc.identifier | http://arxiv.org/abs/0901.0719 | |
| dc.identifier | Phys. Rev. B 79, 140507(R) (2009). | |
| dc.identifier | doi:10.1103/PhysRevB.79.140507 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/228179 | |
| dc.subject | Superconductivity | |
| dc.title | Superfluid density and penetration depth in Fe-pnictides | |
| dc.type | text |