Bulletin of the American Physical Society
APS March Meeting 2018
Volume 63, Number 1
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session G60: Poster Session I
2:00 PM,
Tuesday, March 6, 2018
LACC
Room: West Hall A
Abstract ID: BAPS.2018.MAR.G60.391
Abstract: G60.00391 : Effective Hamiltonian approach to optical chirality and optical activity induced by Weyl spin-orbit interaction*
Presenter:
Hideo Kawaguchi
(Center for Emergent Matter Science (CEMS), RIKEN)
Authors:
Hideo Kawaguchi
(Center for Emergent Matter Science (CEMS), RIKEN)
Gen Tatara
(Center for Emergent Matter Science (CEMS), RIKEN)
resulting in a natural optical activity such as circular dichroism. Furthermore, in the case where time-reversal invariance of the system is broken due to the existence of a magnetization and the magnetic field, an anisotropic light propagation irrespective of light polarization is induced by Doppler shift.
In this study, optical properties of a Weyl spin-orbit system with quadratic dispersion is investigated by deriving an effective Hamiltonian of electromagnetic fields based on an imaginary-time path-integral formalism. We show that the effective Hamiltonian in the systems is written in terms of a optical chirality order patameter suggested by Lipkin as shown below.
H_{EB}
= \frac{2g}{\epsilon_{0}}C_{\chi},
where $C_{\chi}$ is the chirality order parameter and $g$ is a constant reflecting the breaking of spatial-inversion symmetry. We also discuss natural optical activity in the context of the effective Hamiltonian.
*H. K. was supported by RIKEN Junior Associate Program.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.MAR.G60.391
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