BEDT-TTF superconductors studied by μSR

Muon-spin rotation (μSR) measurements have been used to study the superconducting vortex properties of the organic superconductors κ-(BEDT-TTF) 2Cu(SCN) 2, α-(BEDT-TTF) 2NH 4Hg(SCN) 4 and β-(BEDT-TTF) 2IBr 2. These materials all have highly anisotropic structures consisting of metallic layers of BED...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2000-08, Vol.289, p.396-399
Main Authors: Pratt, F.L, Blundell, S.J, Husmann, A, Marshall, I.M, Lovett, B.W, Hayes, W, Lee, S.L, Ager, C, Ogrin, F.Y, Sasaki, T, Endo, S, Toyota, N, Kanoda, K, Laukhin, V.N, Laukhina, E, Watanabe, I, Nagamine, K
Format: Article
Language:English
Subjects:
Anisotropic superconductivity
Flux lattice order
Organic superconductor
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Summary:Muon-spin rotation (μSR) measurements have been used to study the superconducting vortex properties of the organic superconductors κ-(BEDT-TTF) 2Cu(SCN) 2, α-(BEDT-TTF) 2NH 4Hg(SCN) 4 and β-(BEDT-TTF) 2IBr 2. These materials all have highly anisotropic structures consisting of metallic layers of BEDT-TTF molecules alternating with less well conducting anion layers. Varying the anion gives rise to a change in the anisotropy of the superconductivity and also to changes in the superconducting transition temperature. We have used both transverse and longitudinal magnetic fields to study the three-dimensional flux line lattice that is present at low temperatures and fields and to study also the loss of flux lattice order that occurs on increasing the temperature and field.
ISSN:0921-4526
1873-2135
DOI:10.1016/S0921-4526(00)00420-8