Quantum spin dynamics

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Interplane corrugations in quasi-one-dimensional Fermi surface sections of deuterated and undeuterated kappa-(BEDT-TTF)(2)Cu(NCS)(2)

SYNTHETIC MET 133 (2003) 129-130

Authors:

A Narduzzo, RS Edwards, A Ardavan, J Singleton

Abstract:

Recently a small but definite isotope effect has been found on deuteration of the organic superconductor kappa-(BEDT-TTF)(2)Cu(NCS)(2) [Physica C 351 (2000) 251]. We have investigated the alterations in band-structure brought about by deuteration using a millimetre-wave technique which is sensitive to the corrugations of the quasi-one-dimensional (Q1D) sheets of the Fermi surface [J. Phys. 13 (2001) 2235]. We have mapped the interplane corrugations of the Q1D Fermi surface sections and discuss the dependence of the warping components of these Q1D sheets on the deuteration. (C) 2002 Elsevier Science B.V. All rights reserved.
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Magneto-optics of organic crystalline field effect transistors

SYNTHETIC MET 133 (2003) 165-167

Authors:

A Ardavan, SJ Blundell, J Singleton

Abstract:

Organic molecular FETs provide an experimental framework for studying the band-filling dependent properties of two-dimensional metals. We propose experiments to investigate the band-filling dependent cyclotron resonance and the effect of van Hove singularities. (C) 2002 Elsevier Science B.V. All rights reserved.
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Possible Frohlich superconductivity in strong magnetic fields

SYNTHETIC MET 133 (2003) 99-102

Authors:

CH Mielke, N Harrison, A Ardavan, P Goddard, J Singleton, A Narduzzo, LK Montgomery, L Balicas, JS Brooks, M Tokumoto

Abstract:

A brief review of some of the arguments pointing towards the possibility of organic conductors of the form alpha-(BEDT-TTF)(2)MHg(SCN)(4) (where M = K, Tl and Rb) being candidates for Frohlich superconductivity is given. (C) 2002 Published by Elsevier Science B.V.
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Studies of the magnetoresistive peak due to interlayer coherence in a quasi-two-dimensional superconductor

SYNTHETIC MET 133 (2003) 173-175

Authors:

PA Goddard, J Singleton, A Ardavan, N Harrison, SJ Blundell, JA Schlueter, AM Kini

Abstract:

Peaks in the interlayer magnetoresistance of the layered superconductor kappa-(BEDT-TTF)(2)Cu(NCS)(2) are observed in the presence of an exactly in-plane magnetic field. The existence of these resistance peaks implies the presence of a three-dimensional Fermi surface extending in the interlayer region. Analysis of the width of the peaks yields a value for the interlayer transfer integral. (C) 2002 Elsevier Science B.V. All rights reserved.
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Comparison of the Fermi-surface topologies of κ-(BEDT-TTF)2Cu(NCS)2 and its deuterated analogue

JOURNAL OF PHYSICS-CONDENSED MATTER 15:31 (2003) PII S0953-8984(03)61325-1

Authors:

RS Edwards, A Narduzzo, J Singleton, A Ardavan, JA Schlueter
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