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Anisotropic spin dephasing of impurity-bound electron spins in ZnO

Cited 5 time in Web of Science Cited 5 time in Scopus
Authors

Lee, Jieun; Venugopal, Aneesh; Sih, Vanessa

Issue Date
2015-01
Publisher
AMER INST PHYSICS
Citation
APPLIED PHYSICS LETTERS, Vol.106 No.1
Abstract
We investigate the electron spin dynamics of n-type c-axis oriented bulk zinc oxide (ZnO) by using time-resolved Kerr rotation and resonant spin amplification measurements. Calculating resonant spin amplification using an anisotropic spin dephasing model reveals that there are two species involved in the spin dynamics, which we attribute to conduction and impurity-bound electron spins, respectively. We find that the impurity-bound electron spin dephasing mechanism is strongly anisotropic due to anisotropic exchange interactions. The identification of the two spin species and their dephasing mechanisms is further supported by the temperature, power, and wavelength dependence of the spin coherence measurements. (C) 2015 AIP Publishing LLC.
ISSN
0003-6951
URI
https://hdl.handle.net/10371/203565
DOI
https://doi.org/10.1063/1.4905278
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  • College of Natural Sciences
  • Department of Physics and Astronomy
Research Area Condensed Matter Physics, Nanoscale Physics and Photonics, 나노 물리와 나노 광자학, 응집 물질 물리

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