Magnetoelectric effect and magnetic exchange in classical spin ice

Journal Article · Wed Jun 24 00:00:00 EDT 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4918169· OSTI ID:22490567

Sarkar, Aranyak; Mukhopadhyay, Soumik ^[1]

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1. Department of Physics, Indian Institute of Technology, Kanpur-208016 (India)

In this article we propose a simple mechanism through which elementary excitations in spin ice, namely magnetic monopoles, lead to spontaneous macroscopic electric polarization through breaking of space inversion symmetry in the spin configuration. We show either the direction or the magnitude of associated electric polarization vector can be conserved in hopping, but both cannot be simultaneous constant of motion, while magnetic charge is constant throughout its movement. A plausible explanation for abnormally large time scale of relaxation for some monopoles reported by Giblin is also demonstrated.

• OSTI ID: 22490567
• Journal Information: AIP Conference Proceedings, Vol. 1665, Issue 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CONFIGURATION
ELECTRICAL PROPERTIES
EXCITATION
ICE
MAGNETIC MONOPOLES
MAGNETIC PROPERTIES
POLARIZATION
RELAXATION
SPIN
SYMMETRY BREAKING