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Soft X-ray magnetic circular dichroism of Cr-doped GaN
H.Makino,J.J.Kim,T.Nakamura,T.Muro,K.Kobayashi,T.Yao 한국물리학회 2004 Current Applied Physics Vol.4 No.6
Soft X-ray magnetic circular dichroism (XMCD) have been measured for the Ga0:97Cr0:03N lm grown by NH3-assistedmolecular beam epitaxy. Temperature dependence of the XMCD intensity was well described by the CurieWeiss law. Although thesample showed ferromagnetic behavior at least up to room temperature, the ferromagnetic component could not be detected by the XMCD measurement.
Electronic structure of Ga1-x CrxN investigated by photoemission spectroscopy
J.J.Kim,H.Makino,K.Yamazaki,A.Ino,H.Namatame,M.Taniguchi,T.Hanada,M.W.Cho,T.Yao 한국물리학회 2004 Current Applied Physics Vol.4 No.6
We have obtained the Cr 3d-like energy states, which located in the band gap of GaN by means of resonant photoemission spectroscopy. In the dierence spectrum between the valence band photoemission spectra of non-doped GaN and that of theGa0:937Cr0:063N, we observed the new energy state, in band gap, consists of Cr 3d-like and N 2p-like component by strong hybridization.