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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 Li0.9Mo6O17Add 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. This talk is included in these lists:Note that ex-directory lists are not shown. |
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