Persistence to high temperatures of interlayer coherence in an organic superconductor

Details Persistence to high temperatures of interlayer coherence in an organic superconductor Persistence to high temperatures of interlayer coherence in an organic superconductor

2006-10-11

arxiv.org/abs/cond-mat/0610318v1

Physics

Condensed Matter

Superconductivity

Scientific paper

10.1103/PhysRevLett.99.027004

The interlayer magnetoresistance $\rho_{zz}$ of the organic metal \cuscn is studied in fields of up to 45 T and at temperatures $T$ from 0.5 K to 30 K. The peak in $\rho_{zz}$ seen in in-plane fields, a definitive signature of interlayer coherence, remains to $T$s exceeding the Anderson criterion for incoherent transport by a factor $\sim 30$. Angle-dependent magnetoresistance oscillations are modeled using an approach based on field-induced quasiparticle paths on a 3D Fermi surface, to yield the $T$ dependence of the scattering rate $\tau^{-1}$. The results suggest that $\tau^{-1}$ does not vary strongly over the Fermi surface, and that it has a $T^2$ dependence due to electron-electron scattering.

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