Topology and Frustration
We carry out neutron scattering studies of novel magnetic orders and exotic excitations in quantum materials, with a particular interest in exploring the emergent quantum phenomena that arise from topology and frustration in correlated electron systems. We are also engaged in the single-crystal growth of quantum materials, and have a strong interest and competence in the development and application of the polarized neutron scattering techniques.
![Top-left: Possible interplay between magnetism and Dirac fermions in the Dirac semimetal EuMnBi2 [1]. Bottom-left: magnetic excitations in the quantum spin liquid candidate material Yb2Ti2O7 [2]; (Right) high-quality single crystals of various quantum materials recently grown in the group.](/en/jcns/jcns-2/images/research/topologie_and_frustration/@@images/image/great)
References:
- F. Zhu, X. Wang, M. Meven, J. Song, T. Mueller, C. Yi, W. Ji, Y. Shi, J. Ma, K. Schmalzl, W. F. Schmidt, Y. Su, and T. Brückel, Magnetic structures, spin-flop transition, and coupling of Eu and Mn magnetism in the Dirac semimetal EuMnBi2, Phys. Rev. Research 2, 043100 (2020)
V. Peçanha-Antonio, E. Feng, Y. Su, V. Pomjakushin, F. Demmel, L-J. Chang, R. J. Aldus, Y. Xiao, M. R. Lees, and T. Brückel, Magnetic excitations in the ground state of Yb2Ti2O7, Phys. Rev. B 96, 214415 (2017)
Fengfeng Zhu, Lichuan Zhang, Xiao Wang, Flaviano José Dos Santos, Junda Song, Thomas Mueller, Karin Schmalzl, Wolfgang F Schmidt, Alexandre Ivanov, Jitae T Park, Jianhui Xu, Jie Ma, Samir Lounis, Stefan Blügel, Yuriy Mokrousov, Yixi Su, Thomas Brückel,
Topological magnon insulators in two-dimensional van der Waals ferromagnets CrSiTe3 and CrGeTe3: Toward intrinsic gap-tunability
Science Advances 7, eabi7532 (2021)W. Schweika, M. Valldor, J. D. Reim, and U. K. Rößler,
Chiral spin liquid ground state in YBaCo3FeO7,
Phys. Rev. X 12, 021029 (2022)
Contact
Dr. Yixi Su
Senior Staff Scientist
- Jülich Centre for Neutron Science (JCNS)
- Neutron Methods (JCNS-4)
Room 0532