TY - JOUR
T1 - Soft x-ray irradiation induced metallization of layered TiNCl
AU - Kataoka, Noriyuki
AU - Tanaka, Masashi
AU - Hosoda, Wataru
AU - Taniguchi, Takumi
AU - Fujimori, Shin Ichi
AU - Wakita, Takanori
AU - Muraoka, Yuji
AU - Yokoya, Takayoshi
N1 - Funding Information:
This work was supported by the Fund for the Promotion of Joint International Research (B) (JP 18KK0076) from the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT), and JSPS KAKENHI Grant Number JP18K04707. This work was performed under the Shared Use Program of Japan Atomic Energy Agency (JAEA) Facilities (Proposal No. 2019A-E19) with the approval of Nanotechnology Platform project supported by the Ministry of Education, Culture, Sports, Science and Technology (Proposal No. A-19-AE-0019). The synchrotron radiation experiments were performed at JAEA beamline BL23SU in SPring-8 (Proposal No. 2019A3844). The authors would like to thank Emeritus Professor Shoji Yamanaka of Hiroshima University for his helpful suggestion in the synthesis of samples.
Publisher Copyright:
© 2020 IOP Publishing Ltd.
PY - 2020/10/16
Y1 - 2020/10/16
N2 - We have performed soft x-ray spectroscopy in order to study the photoirradiation time dependence of the valence band structure and chemical states of layered transition metal nitride chloride TiNCl. Under the soft x-ray irradiation, the intensities of the states near the Fermi level (E F) and the Ti3+ component increased, while the Cl 2p intensity decreased. Ti 2p-3d resonance photoemission spectroscopy confirmed a distinctive Fermi edge with Ti 3d character. These results indicate the photo-induced metallization originates from deintercalation due to Cl desorption, and thus provide a new carrier doping method that controls the conducting properties of TiNCl.
AB - We have performed soft x-ray spectroscopy in order to study the photoirradiation time dependence of the valence band structure and chemical states of layered transition metal nitride chloride TiNCl. Under the soft x-ray irradiation, the intensities of the states near the Fermi level (E F) and the Ti3+ component increased, while the Cl 2p intensity decreased. Ti 2p-3d resonance photoemission spectroscopy confirmed a distinctive Fermi edge with Ti 3d character. These results indicate the photo-induced metallization originates from deintercalation due to Cl desorption, and thus provide a new carrier doping method that controls the conducting properties of TiNCl.
KW - carrier doping method
KW - layered nitride halides
KW - photoemission spectroscopy
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U2 - 10.1088/1361-648X/abbbc3
DO - 10.1088/1361-648X/abbbc3
M3 - Article
C2 - 32977314
AN - SCOPUS:85094202941
SN - 0953-8984
VL - 33
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
IS - 3
M1 - 035501
ER -