caa a22 4500 605545413 CHVBK 20210128100935.0 cr unu---uuuuu 210128e20150901xx s 000 0 eng 10.1007/s00723-015-0655-6 doi (NATIONALLICENCE)springer-10.1007/s00723-015-0655-6 High-Field Multi-Frequency ESR in the Quasi-1D S =1/2 Ising-Like Antiferromagnet BaCo2V2O8 in a Transverse Field [Elektronische Daten] [A. Okutani, S. Kimura, T. Takeuchi, M. Hagiwara] We have performed high-field multi-frequency electron spin resonance (ESR) measurements of a single crystal of the S=1/2 quasi one-dimensional (1D) Ising-like antiferromagnet BaCo2V2O8 at 1.5K in magnetic fields of up to 14T applied along [110] and [100] directions. Two main ESR branches, which are ascending and descending with increasing magnetic fields, are observed from 400GHz at zero magnetic field in both cases. The low ESR mode shows a softening near 10T for H||[100], while no softening was observed below 14T for H||[110]. This difference in the magnetic excitations may explain the distinct phase diagrams for these two directions. Springer-Verlag Wien, 2015 Okutani A. Center for Advanced High Magnetic Field Science, Graduate School of Science, Osaka University, 560-0043, Osaka, Japan aut Kimura S. Institute for Materials Research, Tohoku University, 980-8577, Sendai, Japan aut Takeuchi T. Low Temperature Center, Osaka University, 560-0043, Osaka, Japan aut Hagiwara M. Center for Advanced High Magnetic Field Science, Graduate School of Science, Osaka University, 560-0043, Osaka, Japan aut Applied Magnetic Resonance Springer Vienna 46/9(2015-09-01), 1003-1006 0937-9347 46:9<1003 2015 46 723 https://doi.org/10.1007/s00723-015-0655-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00723-015-0655-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Okutani A. Center for Advanced High Magnetic Field Science, Graduate School of Science, Osaka University, 560-0043, Osaka, Japan aut NATIONALLICENCE 700 1- Kimura S. Institute for Materials Research, Tohoku University, 980-8577, Sendai, Japan aut NATIONALLICENCE 700 1- Takeuchi T. Low Temperature Center, Osaka University, 560-0043, Osaka, Japan aut NATIONALLICENCE 700 1- Hagiwara M. Center for Advanced High Magnetic Field Science, Graduate School of Science, Osaka University, 560-0043, Osaka, Japan aut NATIONALLICENCE 773 0- Applied Magnetic Resonance Springer Vienna 46/9(2015-09-01), 1003-1006 0937-9347 46:9<1003 2015 46 723