Ooguri, Hirosi and Oshikawa, Masaki (2011) Instability in magnetic materials with dynamical axion field. California Institute of Technology , Pasadena, CA. (Submitted) http://resolver.caltech.edu/CaltechAUTHORS:20120103-143444619
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It has been pointed out that the axion electrodynamics exhibits instability in the presence of a background electric field. We show that the instability leads to a complete screening of an applied electric field above a certain critical value and the excess energy is converted into a magnetic field. We clarify the physical origin of the screening effect and discuss its possible experimental realization in magnetic materials where magnetic fluctuations play the role of the dynamical axion field.
|Item Type:||Report or Paper (Discussion Paper)|
|Additional Information:||We thank Y. Ando, O. Bergman, J. Gauntlett, D. Hsieh, J. Maldacena, and X.-L. Qi for useful discussion. We thank the hospitality of the Aspen Center for Physics (NSF grant 1066293) and Kavli Institute for Theoretical Physics, UC Santa Barbara (NSF grant PHY05-51164). The work of HO is supported in part by U.S. DOE grant DE-FG03-92-ER40701, the WPI Initiative of MEXT of Japan, and JSPS Grant-in-Aid for Scientific Research C-23540285. The work of MO is supported in part by JSPS Grant-in-Aid for Scientific Research No. 21540381.|
|Subject Keywords:||Mesoscale and Nanoscale Physics (cond-mat.mes-hall); Statistical Mechanics (cond-mat.stat-mech); High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Theory (hep-th)|
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|Classification Code:||PACS: 14.80 Va|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Tony Diaz|
|Deposited On:||13 Apr 2012 20:33|
|Last Modified:||04 Mar 2013 23:32|
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