TY - JOUR
T1 - Observation of elementary excitations of quantum sine-gordon spin system KCuGaF 6 under high magnetic field
AU - Umegaki, I.
AU - Tanaka, H.
AU - Ono, T.
AU - Nojiri, H.
N1 - Funding Information:
Acknowledgements We express our sincere thanks to R. Morisaki for her contribution to the early stage of the present study and to M. Oshikawa and T. Hikihara for fruitful discussions and comments. This work was supported by a Grant-in-Aid for Scientific Research (A) from the Japan Society for the Promotion of Science, and by a Global COE Program “Nanoscience and Quantum Physics” at Tokyo Tech and a Grant-in-Aid for Scientific Research on Priority Areas “High Field Spin Science in 100 T”, both funded by the Ministry of Education, Culture, Sports, Science and Technology of Japan.
PY - 2010/4
Y1 - 2010/4
N2 - In magnetic field, KCuGaF 6 can be mapped onto the quantum sine-Gordon model, for which low-energy elementary excitations are solitons, antisolitons and their bound states breathers. Using high-frequency, high-field ESR measurements, we observed these unusual magnetic excitations.
AB - In magnetic field, KCuGaF 6 can be mapped onto the quantum sine-Gordon model, for which low-energy elementary excitations are solitons, antisolitons and their bound states breathers. Using high-frequency, high-field ESR measurements, we observed these unusual magnetic excitations.
KW - 1D Heisenberg antiferromagnet
KW - Elementary excitations
KW - Quantum sine-Gordon model
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U2 - 10.1007/s10909-009-0072-z
DO - 10.1007/s10909-009-0072-z
M3 - Article
AN - SCOPUS:77950368767
SN - 0022-2291
VL - 159
SP - 60
EP - 63
JO - Journal of Low Temperature Physics
JF - Journal of Low Temperature Physics
IS - 1-2
ER -