Multiferroicity in the spin-1/2 quantum matter of LiCu2O 2

A. Rusydi; I. Mahns; S. Müller; M. Rübhausen; S. Park; Y. J. Choi; C. L. Zhang; S. W. Cheong; S. Smadici; P. Abbamonte; M. V. Zimmermann; G. A. Sawatzky

doi:10.1063/1.2787973

Multiferroicity in the spin-1/2 quantum matter of LiCu₂O ₂

A. Rusydi, I. Mahns, S. Müller, M. Rübhausen, S. Park, Y. J. Choi, C. L. Zhang, S. W. Cheong, S. Smadici, P. Abbamonte, M. V. Zimmermann, G. A. Sawatzky

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

Abstract

Multiferroicity in Li Cu2 O2 single crystals is studied using resonant soft x-ray magnetic scattering, hard x-ray diffraction, heat capacity, magnetic susceptibility, and electrical polarization. Two magnetic transitions are found at 24.6 K (T1) and 23.2 K (T2). Our data are consistent with a sinusoidal spin structure at T2 <T< T1 and with a helicoidal spin structure at T< T2, giving rise to ferroelectricity. Surprisingly, above T2, the correlation lengths of the spin structures increase as the temperature increases with dramatic changes of ∼42% occurring along the c axis.

Original language	English (US)
Article number	262506
Journal	Applied Physics Letters
Volume	92
Issue number	26
DOIs	https://doi.org/10.1063/1.2787973
State	Published - 2008

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2787973

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@article{a4d1d3e2d52a45afbffb77ba4d230526,

title = "Multiferroicity in the spin-1/2 quantum matter of LiCu2O 2",

abstract = "Multiferroicity in Li Cu2 O2 single crystals is studied using resonant soft x-ray magnetic scattering, hard x-ray diffraction, heat capacity, magnetic susceptibility, and electrical polarization. Two magnetic transitions are found at 24.6 K (T1) and 23.2 K (T2). Our data are consistent with a sinusoidal spin structure at T2 <T< T1 and with a helicoidal spin structure at T< T2, giving rise to ferroelectricity. Surprisingly, above T2, the correlation lengths of the spin structures increase as the temperature increases with dramatic changes of ∼42% occurring along the c axis.",

author = "A. Rusydi and I. Mahns and S. M{\"u}ller and M. R{\"u}bhausen and S. Park and Choi, {Y. J.} and Zhang, {C. L.} and Cheong, {S. W.} and S. Smadici and P. Abbamonte and Zimmermann, {M. V.} and Sawatzky, {G. A.}",

note = "Funding Information: We acknowledge M. Mostovoy for helpful discussions and financial support by the Helmholtz Association VH-FZ-007, DFG Ru 773/2-3, DE-FG02-06ER46285, NSLS No. DE-AC02-98CH10886, the Canadian funding agencies: NSERC, CIAR, and CFI, NSF-MDR-0405682.",

year = "2008",

doi = "10.1063/1.2787973",

language = "English (US)",

volume = "92",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

number = "26",

}

TY - JOUR

T1 - Multiferroicity in the spin-1/2 quantum matter of LiCu2O 2

AU - Rusydi, A.

AU - Mahns, I.

AU - Müller, S.

AU - Rübhausen, M.

AU - Park, S.

AU - Choi, Y. J.

AU - Zhang, C. L.

AU - Cheong, S. W.

AU - Smadici, S.

AU - Abbamonte, P.

AU - Zimmermann, M. V.

AU - Sawatzky, G. A.

N1 - Funding Information: We acknowledge M. Mostovoy for helpful discussions and financial support by the Helmholtz Association VH-FZ-007, DFG Ru 773/2-3, DE-FG02-06ER46285, NSLS No. DE-AC02-98CH10886, the Canadian funding agencies: NSERC, CIAR, and CFI, NSF-MDR-0405682.

PY - 2008

Y1 - 2008

N2 - Multiferroicity in Li Cu2 O2 single crystals is studied using resonant soft x-ray magnetic scattering, hard x-ray diffraction, heat capacity, magnetic susceptibility, and electrical polarization. Two magnetic transitions are found at 24.6 K (T1) and 23.2 K (T2). Our data are consistent with a sinusoidal spin structure at T2 <T< T1 and with a helicoidal spin structure at T< T2, giving rise to ferroelectricity. Surprisingly, above T2, the correlation lengths of the spin structures increase as the temperature increases with dramatic changes of ∼42% occurring along the c axis.

AB - Multiferroicity in Li Cu2 O2 single crystals is studied using resonant soft x-ray magnetic scattering, hard x-ray diffraction, heat capacity, magnetic susceptibility, and electrical polarization. Two magnetic transitions are found at 24.6 K (T1) and 23.2 K (T2). Our data are consistent with a sinusoidal spin structure at T2 <T< T1 and with a helicoidal spin structure at T< T2, giving rise to ferroelectricity. Surprisingly, above T2, the correlation lengths of the spin structures increase as the temperature increases with dramatic changes of ∼42% occurring along the c axis.

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