James de Lisle
PD Researcher, Department of Materials Engineering Science, Osaka University
- host researcher:
- A01 Satoshi Fujimoto
- 2017/04/01-(Topo-Q PD)
E-mail : jdelisle[at]blade.mp.es.osaka-u.ac.jp
- BSc. Mathematics and Physics, University of Bristol
- PGCE Secondary Science with Physics, University of West England
- MSc. Quantum Technologies, University of Leeds
- PhD Physics, University of Leeds
- PDRA Physics Department, University of Leeds, UK.
- PD Researcher, Department of Physics, Kyoto University
We are interested in identifying a candidate for a Weyl superconductor (WSC). A WSC is characterised by Weyl nodes, however the nodes are contained in the superconducting gap function. The standard surface measurements such as ARPES are no longer useful as the relevant systems are at very low temperatures and therefore lie outside the sensitivity range. We show that one can identify WSC in UCoGe [1, 2] due to a new phenomenon we call the chiral-magnetothermal effect (CMTE). CMTE is analogous to the chiral anomaly in other condensed matter systems. In the CMTE the electric and magnetic field of the standard chiral magnetic effect are replaced by a temperature gradient and an effective momentum dependent magnetic field that arises from a torsional field (such as that from the vortex texture of the superconducting order parameter). The effect gives rise to spin polarisation, an effect which cannot be attributed to Zeeman splitting due to the absence of a magnetic field in the bulk. Using non-equilibrium quantum field theory in the quasiclassical limit, we show that the spin polarisation that occurs due to this effect appears under the first order quantum correction to the quasiclassical propagator Such an effect should be observable using standard Knight shift measure ments.
 Mineev V P Physical Review B 66 134504 (2002)
 Hattori T et al. Physical Review Letters 108 066403 (2012)
SELECTION OF PUBLICATIONS
"Detection of Chern numbers and entanglement in topological two-species systems through subsystem winding numbers"
James de Lisle, Suvabrata De, Emilio Alba, Alex Bullivant, Juan J Garcia-Ripoll, Ville Lahtinen, and Jiannis K Pachos,
New Journal of Physics, 16, 083022-1-19, (Aug. 2014).
"Induced Topological Phases at the Boundary of 3D Topological Superconductors"
Peter Finch, James de Lisle, Giandomenico Palumbo, and Jiannis K. Pachos,
Physical Review Letters, 114, 016801-1-5, (Jan. 2015).
"Nested defects on the boundary of topological superconductors"
James de Lisle, Giandomenico Palumbo, Adil A. Gangat, and Jiannis K. Pachos
Physical Review B 94, 054505-1-11, (Aug. 2016).