Determination of s-d exchange coupling in GaMnN by time-resolved Kerr rotation spectroscopy

Wei Ting Hsu, Ting Yen Hsieh, Hsin Feng Chen, Feng Wen Huang, Po Cheng Chen, Jinn-Kong Sheu, Wen Hao Chang

研究成果: Article同行評審

2 引文 斯高帕斯(Scopus)

摘要

Coherent electron-spin dynamics in Ga1-xMnxN has been investigated by time-resolved Kerr rotation spectroscopy. The effective electron g factor shows a linear increase with the Mn concentration due to the s-d exchange coupling between the conduction electrons and the d-shell electrons of Mn3+ impurities. The magnitude and sign of the s-d exchange constant are determined precisely to be N0α=+0.23±0.02eV, indicative of a ferromagnetic s-d exchange coupling in GaMnN. The determined N0α is consistent with the typical value found in most diluted magnetic semiconductors and reveals that GaMnN is indeed not an exception.

原文English
文章編號125205
期刊Physical Review B - Condensed Matter and Materials Physics
90
發行號12
DOIs
出版狀態Published - 2014 九月 29

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學

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