Muon spin relaxation in double chain system KCuCl3
| Autor: | I. Watanabe, H. Tanaka, W. Higemoto, K. Nagamine |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Physics
Muon Spin polarization Condensed matter physics Physics::Instrumentation and Detectors Relaxation (NMR) General Physics and Astronomy Muon spin spectroscopy Spin wave Spin Hall effect Physics::Accelerator Physics High Energy Physics::Experiment Condensed Matter::Strongly Correlated Electrons Quantum spin liquid Doublet state |
| Zdroj: | Physics Letters A. 243:80-84 |
| ISSN: | 0375-9601 |
| Popis: | In muon spin relaxation studies on the S = 12 double chain system KCuCl3, which is thought to have a spin singlet ground state with a finite spin gap, we found that the muon spin becomes strongly depolarized below 20 K. Under a longitudinal magnetic field of 3800 G, the temperature dependence of the muon spin relaxation rate shows a cusp at ∼ 5 K, where the relaxation rate increases with increasing longitudinal magnetic fields, suggesting the existence of a frustrated spin state. We believe that the origin of the muon spin relaxation is related to the electron spins of the Cu2+ ions which form the doubie chains or formation of the paramagnetic muon state. Possible other reasons of the muon spin relaxation are also discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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