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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.

EuMnBi2 and Yb2Ti2O7(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.
Copyright: Forschungszentrum Jülich

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)

Contact: 

Yixi Su
Phone:   +49 89 289-10714 
email: y.su@fz-juelich.de

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