Fundamental Similarities between Organic and Cuprate Superconductors Shown by Muon Spin Relaxation Studies

Y. J. Uemura,G. M. Luke,H. Yamochi,J. H. Brewer,B. J. Sternlieb,T. M. Riseman,L. P. Le,G. Saito

doi:10.1007/978-1-4899-2605-0_4

Fundamental Similarities between Organic and Cuprate Superconductors Shown by Muon Spin Relaxation Studies

Y. J. Uemura, G. M. Luke + Show 6 more

https://doi.org/10.1007/978-1-4899-2605-0_4

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Publication Date: Jan 1, 1990

Citations: 3

Affiliation: Columbia University, Kyoto University, The University of Tokyo, TRIUMF, University of British Columbia

#Muon Spin Relaxation Studies #Muon Spin Relaxation + Show 8 more

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Abstract

Muon Spin Relaxation (μSR) measurements on (BEDT - TTF)2Cu(NCS)2 show that the magnetic field penetration depth λbc within the conductive b-c plane is about 8000 A at T → 0. This value corresponds to the superconducting carrier density ns = 1.6 × 1020/cm3 for an in-plane effective mass m* = 3.5me. Comparisons with μSR results on high-Tc cuprate superconductors demonstrate that both the present organic superconductor and the hole-doped cuprate systems are characterized by a small number of superconducting pairs, i. e. 5 to 10 pairs, in the coherence area ξ2 within the 2-dimensional conductive plane. Implications of this feature on theories of superconductivity in these systems are discussed.

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