Jian Rui Soh
EPFL SB IPHYS LQM
PH D2 484 (Bâtiment PH)
Station 3
1015 Lausanne
Site web: https://lqm.epfl.ch/
Formation
2016 – 2019 University of Oxford
2012 – 2015 Imperial College London
Publications représentatives
J.-R. Soh, F. de Juan, M. G. Vergniory, N. B. M. Schröter, M. C. Rahn, D. Y. Yan, J. Jiang, M. Bristow, P. Reiss, J. N. Blandy, Y. F. Guo, Y. G. Shi, T. K. Kim, A. McCollam, S. H. Simon, Y. Chen, A. I. Coldea, and A. T. Boothroyd
Discovery of an ideal Weyl semimetal
Published in Weyl semimetals exhibit exceptional electronic transport due to the presence of topological band crossings called Weyl nodes. The nodes come in pairs with opposite chirality, but their number and location in momentum space is otherwise material-specific. Together with colleagues in the Rudolf Peierls Centre for Theoretical Physics, Oxford, and a team of international collaborators, we have found that the layered intermetallic EuCd2As2 in a magnetic field is what Bernevig has termed the hydrogen atom of a Weyl semimetal, i.e. one with a single pair of Weyl nodes at the Fermi level and without overlapping electron bands. The discovery opens the door to exploration of a wide range of exotic physics predicted for Weyl fermions in the solid state.
https://arxiv.org/abs/1901.10022 in
J.-R. Soh, F. de Juan, N. Qureshi, H. Jacobsen, H.-Y. Wang, Y.-F. Guo, and A. T. Boothroyd
Ground-state magnetic structure of Mn3Ge
Published in The antiferromagnet Mn3Ge has been recently shown to exhibit a large spontaneous anomalous Hall effect, which can be switched by a small magnetic field and which has been attributed to topologically protected Weyl nodes. Up till now, the true ground-state magnetic structure of the compound has eluded countless experimental studies, which began some fifty years ago. Here, we report the use of an advanced polarized neutron scattering technique to resolve unambiguously the magnetic structure of this compound.
https://arxiv.org/abs/2001.02601 in
Jian-Rui Soh, Henrik Jacobsen, Bachir Ouladdiaf, Alexandre Ivanov, Andrea Piovano, Tim Tejsner, Zili Feng, Hongyuan Wang, Hao Su, Yanfeng Guo, Youguo Shi, and Andrew T. Boothroyd
Magnetic structure and excitations of YbMnBi2
Published in One of the major themes in solid-state physics is the realization of exotic types of relativistic electrons that travel at speeds much slower than the speed of light. These electrons live in crystals with very specific structural properties, one such material being the Weyl semimetal. The compound YbMnBi2 has been proposed as a candidate if it possesses a very specific type of magnetic order. In this work, we establish conclusively that YbMnBi2 is not a Weyl semimetal.
https://arxiv.org/abs/1908.04872 in