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Title: Anomalous Cherenkov spin-orbit sound

Abstract

The Cherenkov effect is a well-known phenomenon in the electrodynamics of fast charged particles passing through transparent media. If the particle is faster than the light in a given medium, the medium emits a forward light cone. This beautiful phenomenon has an acoustic counterpart where the role of photons is played by phonons and the role of the speed of light is played by the sound velocity. In this case the medium emits a forward sound cone. Here, we show that in a system with spin-orbit interactions in addition to this normal Cherenkov sound there appears an anomalous Cherenkov sound with forward and backward sound propagation. Furthermore, we demonstrate that the transition from the normal to anomalous Cherenkov sound happens in a singular way at the Cherenkov cone angle. The detection of this acoustic singularity therefore represents an alternative experimental tool for the measurement of the spin-orbit coupling strength.

Authors:
 [1]
  1. Institut fuer Theoretische Physik, Universitaet Regensburg, D-93040 Regensburg (Germany)
Publication Date:
OSTI Identifier:
21538129
Resource Type:
Journal Article
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 83; Journal Issue: 8; Other Information: DOI: 10.1103/PhysRevB.83.081308; (c) 2011 American Institute of Physics; Journal ID: ISSN 1098-0121
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CHARGED PARTICLES; CHARGED-PARTICLE TRANSPORT; CHERENKOV RADIATION; DETECTION; ELECTRODYNAMICS; EMISSION; LIGHT CONE; L-S COUPLING; ORBITS; PHONONS; PHOTONS; SINGULARITY; SOUND WAVES; SPIN; VISIBLE RADIATION; ANGULAR MOMENTUM; BOSONS; COUPLING; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; INTERMEDIATE COUPLING; MASSLESS PARTICLES; PARTICLE PROPERTIES; QUASI PARTICLES; RADIATION TRANSPORT; RADIATIONS; SPACE-TIME

Citation Formats

Smirnov, Sergey. Anomalous Cherenkov spin-orbit sound. United States: N. p., 2011. Web. doi:10.1103/PHYSREVB.83.081308.
Smirnov, Sergey. Anomalous Cherenkov spin-orbit sound. United States. https://doi.org/10.1103/PHYSREVB.83.081308
Smirnov, Sergey. 2011. "Anomalous Cherenkov spin-orbit sound". United States. https://doi.org/10.1103/PHYSREVB.83.081308.
@article{osti_21538129,
title = {Anomalous Cherenkov spin-orbit sound},
author = {Smirnov, Sergey},
abstractNote = {The Cherenkov effect is a well-known phenomenon in the electrodynamics of fast charged particles passing through transparent media. If the particle is faster than the light in a given medium, the medium emits a forward light cone. This beautiful phenomenon has an acoustic counterpart where the role of photons is played by phonons and the role of the speed of light is played by the sound velocity. In this case the medium emits a forward sound cone. Here, we show that in a system with spin-orbit interactions in addition to this normal Cherenkov sound there appears an anomalous Cherenkov sound with forward and backward sound propagation. Furthermore, we demonstrate that the transition from the normal to anomalous Cherenkov sound happens in a singular way at the Cherenkov cone angle. The detection of this acoustic singularity therefore represents an alternative experimental tool for the measurement of the spin-orbit coupling strength.},
doi = {10.1103/PHYSREVB.83.081308},
url = {https://www.osti.gov/biblio/21538129}, journal = {Physical Review. B, Condensed Matter and Materials Physics},
issn = {1098-0121},
number = 8,
volume = 83,
place = {United States},
year = {Tue Feb 15 00:00:00 EST 2011},
month = {Tue Feb 15 00:00:00 EST 2011}
}