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Oh, Yoon Seok
Laboratory for Strong Correlation in Quantum Materials
Research Interests
  • Multiferroic
  • Ferroelectric
  • Quantum Magnetism

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MnSb2O6: a polar magnet with a chiral crystal structure

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Title
MnSb2O6: a polar magnet with a chiral crystal structure
Author
Johnson, RDCao, KChapon, LCFabrizi, FPerks, NManuel, PYang, JJOh, Yoon SeokCheong, SWRadaelli, PG
Keywords
Ab initio theoretical calculations; Axial vector; Ferroelectric switching; Heisenberg exchange interaction; Magnetic ground state; Multiferroics; Out-of-plane anisotropy; Structural chirality
Issue Date
2013-07
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW LETTERS, v.111, no.1, pp.017202 -
Abstract
Structural and magnetic chiralities are found to coexist in a small group of materials in which they produce intriguing phenomenologies such as the recently discovered Skyrmion phases. Here, we describe a previously unknown manifestation of this interplay in MnSb2O6, a trigonal oxide with a chiral crystal structure. Unlike all other known cases, the MnSb2O6 magnetic structure is based on corotating cycloids rather than helices. The coupling to the structural chirality is provided by a magnetic axial vector, related to the so-called vector chirality. We show that this unique arrangement is the magnetic ground state of the symmetric-exchange Hamiltonian, based on ab initio theoretical calculations of the Heisenberg exchange interactions, and is stabilized by out-of-plane anisotropy. MnSb2O6 is predicted to be multiferroic with a unique ferroelectric switching mechanism.
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DOI
10.1103/PhysRevLett.111.017202
ISSN
0031-9007
Appears in Collections:
PHY_Journal Papers
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