J. Phys. IV France
Volume 114, April 2004
Page(s) 257 - 261

J. Phys. IV France
114 (2004) 257
DOI: 10.1051/jp4:2004114054

A new superfluid in organic molecular metals at high magnetic fields

J. Singleton1, N. Harrison1, A. Bangura2, A. Ardavan2 and L.K. Montgomery3

1  National High Magnetic Field Laboratory, TA-35, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
2  Physics Department, University of Oxford, The Clarendon Laboratory, Oxford OX1 3PU, UK
3  Department of Chemistry, Indiana State University, Bloomington, Indiana, USA

We show that the coexistence of a quasi-two-dimensional Fermi-surface exhibiting Landau quantisation and a charge-density wave leads to a screening of electromagnetic fields at the sample surface. Hall potential experiments demonstrate that this screening is responsible for some of the unusual phenomena observed in the high-field CDW x state of $\alpha$-(BEDT-TTF) 2KHg(SCN) 4.

© EDP Sciences 2004