Inelastic neutron scattering study of spin waves in the garnet with a triangular magnetic structure

Autor:	V N Syromyatnikov, V.P. Plakhty, B. Dorner, O. P. Smirnov, Yu P Chernenkov, Arsen Gukasov, S Yu Kokovin
Rok vydání:	1999
Předmět:	Magnetic structure Condensed matter physics Chemistry Spin wave Superexchange Magnon Dispersion relation Antiferromagnetism Condensed Matter::Strongly Correlated Electrons General Materials Science Inelastic scattering Condensed Matter Physics Inelastic neutron scattering
Zdroj:	Journal of Physics: Condensed Matter. 11:2869-2878
ISSN:	1361-648X 0953-8984
DOI:	10.1088/0953-8984/11/14/003
Popis:	The spin-wave spectrum of the antiferromagnet with the garnet structure has been studied by inelastic neutron scattering on the triple-axis spectrometers IN12 and IN14 at ILL. Magnon dispersion curves were measured along and directions up to energies of 0.3 THz. The spin-wave symmetry analysis, which reduced the number of independent exchange parameters to six, was performed to ensure correct description of the spin-wave branches. As determined by the fitting, five of the parameters are statistically significant and have been found to be , and . This quite unusual sequence of exchange parameters clearly demonstrates the importance of the superexchange chain geometry.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4e7f92ac77e0c12614a415d5693763bb https://doi.org/10.1088/0953-8984/11/14/003 Zobrazit plný text záznamu