TY - JOUR
T1 - Magnetic excitations at magnetization plateaux
T2 - ESR study on SrCu2 (BO3)2
AU - Nojiri, H.
AU - Kageyama, H.
AU - Ueda, Y.
AU - Motokawa, M.
N1 - Funding Information:
This work has been partly supported by a Grant-in-Aid from the Ministry of Education, Science, Sports and Culture, Japan and by the Sumitomo Foundation.
PY - 2001
Y1 - 2001
N2 - Magnetic excitations of SrCu2(BO3)2 have been studied in very high fields including 1/4-plateau and 1/8-plateau phases by means of electron spin resonance. Below the 1/8-plateau, a bending of the SZ = -1 branch of the lowest excited triplet is observed, which is caused by the strong mixing between the ground state and the excited state. Besides the triplet, a strong main mode is observed which is apart from the resonance field expected for the conventional paramagnetic resonance. At magnetization plateaux, the main mode appears around the paramagnetic resonance position and several broad absorption peaks are observed at lower frequencies.
AB - Magnetic excitations of SrCu2(BO3)2 have been studied in very high fields including 1/4-plateau and 1/8-plateau phases by means of electron spin resonance. Below the 1/8-plateau, a bending of the SZ = -1 branch of the lowest excited triplet is observed, which is caused by the strong mixing between the ground state and the excited state. Besides the triplet, a strong main mode is observed which is apart from the resonance field expected for the conventional paramagnetic resonance. At magnetization plateaux, the main mode appears around the paramagnetic resonance position and several broad absorption peaks are observed at lower frequencies.
KW - ESR
KW - High magnetic field
KW - Magnetic excitation
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U2 - 10.1016/S0304-8853(00)00636-3
DO - 10.1016/S0304-8853(00)00636-3
M3 - Article
AN - SCOPUS:0035327869
SN - 0304-8853
VL - 226-230
SP - 1101
EP - 1102
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
IS - PART II
ER -