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Submillimeter-wave ESR measurements of low-dimensional quantum spin systems
- Source :
- Applied Magnetic Resonance. 18:469-474
- Publication Year :
- 2000
- Publisher :
- Springer Science and Business Media LLC, 2000.
-
Abstract
- Temperature-dependent electron spin resonance (ESR) measurements of two low-dimensional quantum spin systems, theS = 1/2 spin-ladder system Cu2(1,4-diazacycloheptane)2Cl4 (Cu2(C5H12N2)2Cl4) and the gaplessS = 1 bond-alternating one-dimensional antiferromagnettrans-Ni(333-tet)(N3)(ClO4), have been performed. X-band electron spin resonance (ESR) measurements of single-crystal Cu2(C5H12N2)2Cl4 show the increase of linewidth and anisotropicg-shifts below 8 K similar to those known for one-dimensional antiferromagnet. On the other hand, Ni(333-tet)(N3)(ClO4) has broad line-width and ESR has been observed for the first time by our high-field ESR. Its linewidth increases as the temperature is decreased, while theg-shift seems to be isotropic and theg-value decreases as the temperature is decreased. Thisg-shift can be connected to the quantum fluctuation of the system.
Details
- ISSN :
- 16137507 and 09379347
- Volume :
- 18
- Database :
- OpenAIRE
- Journal :
- Applied Magnetic Resonance
- Accession number :
- edsair.doi...........63624830df0591febbd60c2ce177db1c