R. G. Herb Condensed Matter Seminars

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Optical and transport properties of metals with nontrivial band geometry
Date: Thursday, May 2nd
Time: 4:00 pm
Place: 5310 Chamberlin Hall
Speaker: Dima Pesin , University of Virginia
Abstract: I will describe how the geometry of the band structure of metals manifests itself in their optical and transport properties. I particular, I will show that the natural optical activity of metals, equivalent to the so-called dynamic chiral magnetic effect, stems from the intrinsic magnetic moments of quasiparticles, and demonstrate that these magnetic moments can be of both intrinsic and extrinsic origin. I will also discuss optical Hall response of chiral crystals in the presence of a DC transport current – the gyrotropic Hall effect – and show that it is related to the Berry curvature dipole. The latter fact makes the gyrotropic Hall effect a diagnostic tool for topological properties of three-dimensional chiral metals.
Host: Alex Levchenko
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