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

被引：25

作者：

Yoshinari, Y ^{[1
]}

Hammel, PC

Thompson, JD

Cheong, SW

机构：

[1] Natl Res Inst Met, Tsukuba, Ibaraki 3050003, Japan

[2] Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[3] AT&T Bell Labs, Lucent Technol, Murray Hill, NJ 07974 USA

[4] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08855 USA

来源：

PHYSICAL REVIEW B | 1999年 / 60卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.60.9275

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report La-139 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. [S0163-1829(99)05034-1].

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页码：9275 / 9278

页数：4

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