3He Mobility and Localization in Thin4He Films
| Autor: | N. Alikacem, Robert B. Hallock, D. T. Sprague |
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| Rok vydání: | 1995 |
| Předmět: | |
| Zdroj: | Physical Review Letters. 74:4479-4482 |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.74.4479 |
| Popis: | We report measurements of spin-diffusion coefficients for 0.1 monolayero${\mathrm{f}}^{3}$He adsorbed on thi${\mathrm{n}}^{4}$He filmsas a function of temperature an${\mathrm{d}}^{4}$He coverage. Fo${\mathrm{r}}^{4}$He coverages below a critical coverage ${D}_{c}$ the ${}^{3}$He are immobile. The ${}^{3}$He quasiparticles in the film experience a mobility edge as the ${}^{4}$He coverage is increased beyond ${D}_{c}$. This is accompanied by a vanishing of local moments as evidenced by the disappearance of a Curie-like component of the magnetization for coverages $Dg{D}_{c}$. A peak in the transverse relaxation ${T}_{2}$ occurs near ${D}_{c}$. |
| Databáze: | OpenAIRE |
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