CENTER FOR QUANTUM MATERIALS AND CONDENSED MATTER PHYSICS SEMINARS

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
Sahal Kaushik (SBU)
Mar 5 @ 1:30 pm – 2:30 pm

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

Mar
12
Fri
Practice March meeting talks
Mar 12 @ 1:30 pm – 2:30 pm
Mar
19
Fri
No seminar — March meeting
Mar 19 all-day
Mar
26
Fri
Simon Divilov (Autonomous University of Madrid)
Mar 26 @ 1:30 pm – 2:30 pm

Title: TBD

Host: Marivi

Apr
2
Fri
Xiaoji Xu (Lehigh)
Apr 2 @ 1:30 pm – 2:30 pm

Title: TBD

Host: Mengkun

Apr
9
Fri
Barry Bradlyn (University of Illinois at Urbana-Champaign)
Apr 9 @ 1:30 pm – 2:30 pm

Title: TBD

Host: Jen Cano

Apr
23
Fri
Qiong Ma (Boston College)
Apr 23 @ 1:30 pm – 2:30 pm

Title: TBA

Host: Mengkun Liu

Apr
30
Fri
Valentina Bisogni (Brookhaven National Lab)
Apr 30 @ 1:30 pm – 2:30 pm

Resonant Inelastic X-ray Scattering (RIXS) to probe spin dynamics in magnonic materials 

Host: Phil Allen

May
7
Fri
Jed Pixley (Rutgers)
May 7 @ 1:30 pm – 2:30 pm

Title: TBD

Host: Jen Cano