139La NMR evidence for sensitivity of local structure to magnetic field in La0.5Ca0.5MnO3

Y. Yoshinari; P. C. Hammel; J. D. Thompson; S. W. Cheong

doi:10.1103/PhysRevB.60.9275

¹³⁹La NMR evidence for sensitivity of local structure to magnetic field in La_0.5Ca_0.5MnO₃

Y. Yoshinari, P. C. Hammel, J. D. Thompson, S. W. Cheong

School of Arts and Sciences, Physics & Astronomy

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

30 Scopus citations

Abstract

We report ¹³⁹La nuclear-magnetic-resonance measurements on La_0.5Ca_0.5MnO₃. Two resonance peaks observed in zero applied field are identified as ferromagnetic (FM) resonances arising from FM domains with eight nearest Mn moments almost fully polarized. The two La sites are distinguished by experiencing different covalent configurations with respect to the nearest Mn ions, likely caused by the charge/orbital ordering. The two sites collapse into one in the presence of a strong magnetic field, indicating the close relationship between magnetism and the lattice deformation.

Original language	English (US)
Pages (from-to)	9275-9278
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	60
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevB.60.9275
State	Published - 1999

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.60.9275

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abstract = "We report 139La nuclear-magnetic-resonance measurements on La0.5Ca0.5MnO3. Two resonance peaks observed in zero applied field are identified as ferromagnetic (FM) resonances arising from FM domains with eight nearest Mn moments almost fully polarized. The two La sites are distinguished by experiencing different covalent configurations with respect to the nearest Mn ions, likely caused by the charge/orbital ordering. The two sites collapse into one in the presence of a strong magnetic field, indicating the close relationship between magnetism and the lattice deformation.",

author = "Y. Yoshinari and Hammel, {P. C.} and Thompson, {J. D.} and Cheong, {S. W.}",

year = "1999",

doi = "10.1103/PhysRevB.60.9275",

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AU - Yoshinari, Y.

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AU - Thompson, J. D.

AU - Cheong, S. W.

PY - 1999

Y1 - 1999

N2 - We report 139La nuclear-magnetic-resonance measurements on La0.5Ca0.5MnO3. Two resonance peaks observed in zero applied field are identified as ferromagnetic (FM) resonances arising from FM domains with eight nearest Mn moments almost fully polarized. The two La sites are distinguished by experiencing different covalent configurations with respect to the nearest Mn ions, likely caused by the charge/orbital ordering. The two sites collapse into one in the presence of a strong magnetic field, indicating the close relationship between magnetism and the lattice deformation.

AB - We report 139La nuclear-magnetic-resonance measurements on La0.5Ca0.5MnO3. Two resonance peaks observed in zero applied field are identified as ferromagnetic (FM) resonances arising from FM domains with eight nearest Mn moments almost fully polarized. The two La sites are distinguished by experiencing different covalent configurations with respect to the nearest Mn ions, likely caused by the charge/orbital ordering. The two sites collapse into one in the presence of a strong magnetic field, indicating the close relationship between magnetism and the lattice deformation.

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¹³⁹La NMR evidence for sensitivity of local structure to magnetic field in La_0.5Ca_0.5MnO₃

Abstract

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