During Spring 2021, seminars will be posted on this calendar and take place via Zoom. To join the mailing list and get the link, email Jennifer Cano (first name.lastname@stonybrook.edu)
The CQM Distinguished Lecture series has been established in the Fall of 2015 to bring to Stony Brook University the renowned experts in the physics of quantum matter.
The lectures in this series will attract a broad audience of physicists from SBU and BNL,
and SBU graduate students.
Mar
5
Fri
Tunable chiral symmetry breaking in symmetric Weyl materials
Asymmetric Weyl semimetals, which possess an inherently chiral structure, have different energies and dispersion relations for left- and right-handed fermions. They exhibit certain effects not found in symmetric Weyl semimetals, such as the quantized circular photogalvanic effect and the helical magnetic effect. In this work, we derive the conditions required for breaking chiral symmetry by applying an external field in symmetric Weyl semimetals. We explicitly demonstrate that in certain materials with the Td point group, magnetic fields along low symmetry directions break the symmetry between left- and right-handed fermions; the symmetry breaking can be tuned by changing the direction and magnitude of the magnetic field. In some cases, we find an imbalance between the number of type I left- and right-handed Weyl cones (which is compensated by the number of type II cones of each chirality.)
Ref: Phys. Rev. B 103, 085106 (2021) (ArXiv: 2011.00970)
Host: Dima Kharzeev
Apr
30
Fri
Resonant Inelastic X-ray Scattering (RIXS) to probe spin dynamics in magnonic materials
Host: Phil Allen
Agenda
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