Abstract
Millimeter and submillimeter wave ESR measurements on a single crystal of an S = 1/2 Heisenberg ladder-like system Cu2(C5H12N2)2Cl 4 have been performed using a pulsed magnetic field up to 16 T. The gap is estimated to be 9.7 K from the temperature dependence of ESR intensity. The detailed frequency dependence of ESR in the frequency region from 40 to 420 GHz at 1.8 K suggests magnetic transitions at Hc1 = 7.5T, Hc2 = 10.1T and Hs = 13.2T. A transition at 10.1T is suggested for the first time. These results are discussed with previous magnetization measurements and theoretical calculations, and our results appear to be difficult to interpret according to the simple ladder model.
Original language | English |
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Pages (from-to) | 732-735 |
Number of pages | 4 |
Journal | journal of the physical society of japan |
Volume | 68 |
Issue number | 3 |
DOIs | |
Publication status | Published - 1999 Mar |
Externally published | Yes |
Keywords
- Cu(CHN)Cl
- Magnetic phase transition
- Millimeter wave ESR
- Quantum spin chain
- Submillimeter wave ESR
ASJC Scopus subject areas
- Physics and Astronomy(all)