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Q02: Magnetic Topological Semimetals I

Wed. March 6, 3:00 p.m. – Wed. March 6, 6:00 p.m. CST

L100B

Sponsoring Units: DMPChair: Halyna Hodovanets, Missouri University of Science and TechnologySession Tags:
  • Focus

Wed. March 6, 5:48 p.m. – Wed. March 6, 6:00 p.m. CST

L100B

CeAlGe, a proposed type-II Weyl semimetal, orders antiferromagnetically below 5 K in a zero magnetic field. In the magnetically ordered state, the magnetic moment lies in the tetragonal ab plane, and the M(H) data show a four-fold symmetry along the principal directions in the ab plane. However, anomalously robust and complex two-fold symmetry is observed in the angular dependence of resistivity and magnetic torque data in the magnetically ordered state if the field is swept in the ab plane. This two-fold symmetry is independent of temperature and field-hystereses. We will show that this anomalous behavior is the result of complex magnetic structures and can be tuned by an Al deficiency.

Presented By

  • Halyna Hodovanets (Maryland Quantum Materials Center, Department of Physics, University of Maryland, College Park, Maryland 20742, USA)

Authors

  • Halyna Hodovanets (Maryland Quantum Materials Center, Department of Physics, University of Maryland, College Park, Maryland 20742, USA)
  • C. J Eckberg (Maryland Quantum Materials Center, Department of Physics, University of Maryland, College Park, Maryland 20742, USA)
  • D. J Campbell (Maryland Quantum Materials Center, Department of Physics, University of Maryland, College Park, Maryland 20742, USA)
  • Y. Eo (Maryland Quantum Materials Center, Department of Physics, University of Maryland, College Park, Maryland 20742, USA)
  • P. Y Zavalij (X-ray Crystallographic Center, Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 2074, USA)
  • P. M Piccoli (Department of Geology, University of Maryland, College Park, Maryland 20742, USA)
  • T. Metz (Maryland Quantum Materials Center, Department of Physics, University of Maryland, College Park, Maryland 20742, USA)
  • H. Kim (Maryland Quantum Materials Center, Department of Physics, University of Maryland, College Park, Maryland 20742, USA)
  • J. S Higgins (Maryland Quantum Materials Center, Department of Physics, University of Maryland, College Park, Maryland 20742, USA)
  • Johnpierre Paglione (Maryland Quantum Materials Center, Department of Physics, University of Maryland, College Park, Maryland 20742, USA)