Experimental evidence for the microscopic mechanism of the unusual spin-induced electric polarization in GdMn2 O5

G. Yahia; F. Damay; S. Chattopadhyay; V. Balédent; W. Peng; S. W. Kim; M. Greenblatt; M. B. Lepetit; P. Foury-Leylekian

doi:10.1103/PhysRevB.97.085128

Experimental evidence for the microscopic mechanism of the unusual spin-induced electric polarization in GdMn2 O5

G. Yahia, F. Damay, S. Chattopadhyay, V. Balédent, W. Peng, S. W. Kim, M. Greenblatt, M. B. Lepetit, P. Foury-Leylekian

SAS - Chem & Chemical Biology

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

We report in this paper the temperature evolution of the magnetic structure of GdMn2O5, in the range 2-40 K, studied by neutron diffraction on an isotope-enriched powder. We detail a thorough analysis of the microscopic mechanisms needed to release the different magnetic frustrations that are at the origin of the polarization. In addition to the usual exchange-striction term, known to be at the origin of the polarization in this family, an additional exchange-striction effect between the Gd3+ and Mn3+ spins is found to be responsible for the very large polarization in the Gd compound.

Original language	English (US)
Article number	085128
Journal	Physical Review B
Volume	97
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevB.97.085128
State	Published - Feb 15 2018

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.97.085128

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title = "Experimental evidence for the microscopic mechanism of the unusual spin-induced electric polarization in GdMn2 O5",

abstract = "We report in this paper the temperature evolution of the magnetic structure of GdMn2O5, in the range 2-40 K, studied by neutron diffraction on an isotope-enriched powder. We detail a thorough analysis of the microscopic mechanisms needed to release the different magnetic frustrations that are at the origin of the polarization. In addition to the usual exchange-striction term, known to be at the origin of the polarization in this family, an additional exchange-striction effect between the Gd3+ and Mn3+ spins is found to be responsible for the very large polarization in the Gd compound.",

author = "G. Yahia and F. Damay and S. Chattopadhyay and V. Bal{\'e}dent and W. Peng and Kim, {S. W.} and M. Greenblatt and Lepetit, {M. B.} and P. Foury-Leylekian",

note = "Funding Information: This work was supported by project CMCU PHC UTIQUE 15G1306. The work of M. Greenblatt was supported by NSF-DMR Grant No. 1507252. This work was also supported by the Chinese Scholarship Council. Publisher Copyright: {\textcopyright} 2018 American Physical Society.",

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doi = "10.1103/PhysRevB.97.085128",

language = "English (US)",

volume = "97",

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Experimental evidence for the microscopic mechanism of the unusual spin-induced electric polarization in GdMn2 O5. / Yahia, G.; Damay, F.; Chattopadhyay, S.; Balédent, V.; Peng, W.; Kim, S. W.; Greenblatt, M.; Lepetit, M. B.; Foury-Leylekian, P.

In: Physical Review B, Vol. 97, No. 8, 085128, 15.02.2018.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Experimental evidence for the microscopic mechanism of the unusual spin-induced electric polarization in GdMn2 O5

AU - Yahia, G.

AU - Damay, F.

AU - Chattopadhyay, S.

AU - Balédent, V.

AU - Peng, W.

AU - Kim, S. W.

AU - Greenblatt, M.

AU - Lepetit, M. B.

AU - Foury-Leylekian, P.

N1 - Funding Information: This work was supported by project CMCU PHC UTIQUE 15G1306. The work of M. Greenblatt was supported by NSF-DMR Grant No. 1507252. This work was also supported by the Chinese Scholarship Council. Publisher Copyright: © 2018 American Physical Society.

PY - 2018/2/15

Y1 - 2018/2/15

N2 - We report in this paper the temperature evolution of the magnetic structure of GdMn2O5, in the range 2-40 K, studied by neutron diffraction on an isotope-enriched powder. We detail a thorough analysis of the microscopic mechanisms needed to release the different magnetic frustrations that are at the origin of the polarization. In addition to the usual exchange-striction term, known to be at the origin of the polarization in this family, an additional exchange-striction effect between the Gd3+ and Mn3+ spins is found to be responsible for the very large polarization in the Gd compound.

AB - We report in this paper the temperature evolution of the magnetic structure of GdMn2O5, in the range 2-40 K, studied by neutron diffraction on an isotope-enriched powder. We detail a thorough analysis of the microscopic mechanisms needed to release the different magnetic frustrations that are at the origin of the polarization. In addition to the usual exchange-striction term, known to be at the origin of the polarization in this family, an additional exchange-striction effect between the Gd3+ and Mn3+ spins is found to be responsible for the very large polarization in the Gd compound.

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Experimental evidence for the microscopic mechanism of the unusual spin-induced electric polarization in GdMn2 O5

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