Experimental Evidence for Kaplan{endash}Shekhtman{endash}Entin-Wohlman{endash}Aharony Interactions in Ba{sub 2}CuGe{sub 2}O{sub 7}

Journal Article · Tue Dec 01 04:00:00 EST 1998 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.81.5410· OSTI ID:675130

Zheludev, A; Maslov, S; Shirane, G ^[1]; Tsukada, I; Masuda, T; Uchinokura, K ^[2]; Zaliznyak, I; Erwin, R ^[3]; Zaliznyak, I; Zaliznyak, I ^[4]; Regnault, L P ^[5]

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1. Brookhaven National Laboratory, Upton, New York 11973-5000 (United States)
2. Department of Applied Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan)
3. NIST Center for Neutron Research, National Institute of Standards and Technology, Maryland 20899 (United States)
4. P. L. Kapitza Institute for Physical Problems, Moscow (Russia)
5. RFMC/SPSMS/MDN, CENG, 17 rue des Martyrs, 38054 Grenoble Cedex, France; Duke University, Durham, North Carolina 27708 (United States)

New neutron diffraction and inelastic neutron scattering experiments on Ba{sub 2}CuGe {sub 2}O{sub 7 } suggest that the previously suggested model for the magnetism of this material (an ideal sinusoidal spin spiral, stabilized by isotropic exchange and Dzyaloshinskii-Moriya interactions) needs to be refined. Both new and previously published experimental results can be quantitatively explained by taking into account the Kaplan-Shekhtman-Entin-Wohlman-Aharony term, a special anisotropy term that was predicted to always accompany Dzyaloshinskii-Moriya interactions in insulators. {copyright} {ital 1998} {ital The American Physical Society }

• Research Organization: Brookhaven National Laboratory
• DOE Contract Number: AC02-98CH10886
• OSTI ID: 675130
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 24 Vol. 81; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
ANTIFERROMAGNETISM
BARIUM COMPOUNDS
BARIUM OXIDES
COPPER COMPOUNDS
COPPER OXIDES
EXCHANGE INTERACTIONS
GERMANIUM COMPOUNDS
GERMANIUM OXIDES
INELASTIC SCATTERING
NEUTRON DIFFRACTION
SPIN WAVES