| Autor: |
Goryachev, Maxim, Farr, Warrick G., Tobar, Michael E. |
| Rok vydání: |
2013 |
| Předmět: |
|
| Zdroj: |
Appl. Phys. Lett, Vol, 104, 1, 2013 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1063/1.4858075 |
| Popis: |
We report the observation of $g$-factors of natural paramagnetic impurities in a pure synthetic quartz crystal at milli-Kelvin temperatures. Measurements are made by performing spectroscopy using multiple high-$Q$ Whispering Gallery Modes sustained in the crystal. Extreme sensitivity of the method at low temperatures allows the determination of natural residual impurities introduced during the crystal growth. We observe $g$-factors that significantly differ from integer multiples of the electron $g$-factor in vacuum, and with values of up to $7.6$, which reveals much stronger coupling between impurities and the crystal lattice than in previous studies. Both substitutional and interstitial ions are proposed as candidates for the observed interactions. |
| Databáze: |
arXiv |
| Externí odkaz: |
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