| Autor: |
R E, Walstedt, H, Kojima, N, Butch, N, Bernhoeft |
| Rok vydání: |
2002 |
| Zdroj: |
Physical review letters. 90(6) |
| ISSN: |
0031-9007 |
| Popis: |
63Cu NQR measurements of the 63Cu T1 are reported for the quantum critical point system CeCu5.9Au0.1 over temperatures ranging from 0.1 up to 4.2 K. Below approximately 1 K the magnetization recovery exhibits a stable, nonexponential decay function which we believe signals the onset of 2D quantum critical fluctuations, as has been noted in the literature. We find T1(-1) is proportional to T0.75 for the region T1 K. The observed temperature dependence is in agreement with a phenomenological model of non-Fermi liquid behavior based on the uniform susceptibility but is inconsistent with calculations based on susceptibility peaks identified via neutron scattering experiments. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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