University of Birmingham > Talks@bham > Theoretical Physics Seminars > Lawlessness in low dimensions – violation of the Wiedemann-Franz law and the Pauli paramagnetic limit in quasi-one-dimensional Li0.9Mo6O17

Lawlessness in low dimensions – violation of the Wiedemann-Franz law and the Pauli paramagnetic limit in quasi-one-dimensional Li0.9Mo6O17

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact Dr Dimitri M Gangardt.

The confinement of interacting electrons to a single dimension leads to a complete breakdown of conventional metallic (Fermi-liquid) behaviour and the emergence of a new paradigm based on collective, rather than individual, electronic excitations with independent spin and charge degrees of freedom. In this talk, I will describe our Group’s search for signatures of novel physical phenomena on the boundary of this one-dimensional paradigm, including the discovery of a gross violation of the Wiedemann-Franz law, linking the thermal and electrical conductivities, in the quasi one-dimensional purple bronze Li0.9Mo6O17 [1]. We also report a detailed magnetotransport study of the upper critical field in Li0.9Mo6O17 that hints at the possibility of triplet superconductivity [2] and discuss the possible competition between (triplet) superconductivity and density-wave formation in this fascinating compound [3].

N. Wakeham et al., Nature Communications, vol. 2, 296 (2011)

J.-F. Mercure et al., submitted (2011).

Xiaofeng Xu et al., Physical Review Letters, vol. 102, 206602 (2009).

This talk is part of the Theoretical Physics Seminars series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

 

Talks@bham, University of Birmingham. Contact Us | Help and Documentation | Privacy and Publicity.
talks@bham is based on talks.cam from the University of Cambridge.