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Thermal magnetic fluctuations of a ferroelectric quantum critical point
Stockholm University, Nordic Institute for Theoretical Physics (Nordita).
Stockholm University, Nordic Institute for Theoretical Physics (Nordita). University of Connecticut, United States of America.
Number of Authors: 32021 (English)In: Journal of Physics: Condensed Matter, ISSN 0953-8984, E-ISSN 1361-648X, Vol. 33, no 4, article id 04LT01Article in journal (Refereed) Published
Abstract [en]

Entanglement of two different quantum orders is of an interest of the modern condensed matter physics. One of the examples is the dynamical multiferroicity, where fluctuations of electric dipoles lead to magnetization. We investigate this effect at finite temperature and demonstrate an elevated magnetic response of a ferroelectric near the ferroelectric quantum critical point (FE QCP). We calculate the magnetic susceptibility of a bulk sample on the paraelectric side of the FE QCP at finite temperature and find enhanced magnetic susceptibility near the FE QCP. We propose quantum paraelectric strontium titanate as a candidate material to search for dynamic multiferroicity. We estimate the magnitude of the magnetic susceptibility for this material and find that it is detectable experimentally.

Place, publisher, year, edition, pages
2021. Vol. 33, no 4, article id 04LT01
Keywords [en]
magnetic susceptibility, dynamical multiferroicity, quantum critical point
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-188089DOI: 10.1088/1361-648X/abbb0fISI: 000584940700001PubMedID: 33146153OAI: oai:DiVA.org:su-188089DiVA, id: diva2:1515932
Available from: 2021-01-11 Created: 2021-01-11 Last updated: 2022-02-25Bibliographically approved

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Juričič, VladimirBalatsky, Alexander V.

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