| Autor: |
Farr, W. G., Goryachev, M., Floch, J. M. le, Bushev, P., Tobar, M. E. |
| Rok vydání: |
2014 |
| Předmět: |
|
| Zdroj: |
Appl. Phys. Lett. 107, 122401 (2015) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1063/1.4931432 |
| Popis: |
This work demonstrates strong coupling regime between an Erbium ion spin ensemble and microwave Hybrid Cavity-Whispering Gallery Modes in a Yttrium Aluminium Garnet dielectric crystal. Coupling strengths of $220$~MHz and mode quality factors in excess of $10^6$ are demonstrated. Moreover, the magnetic response of high-Q modes demonstrates behaviour which is unusual for paramagnetic systems. This behaviour includes hysteresis and memory effects. Such qualitative change of the system's magnetic field response is interpreted as a phase transition of Rare Earth ion impurities. This phenomenon is similar to the phenomenon of dilute ferromagnetism in semiconductors. The clear temperature dependence of the phenomenon is demonstrated. |
| Databáze: |
arXiv |
| Externí odkaz: |
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