Photogenerated carriers in SrTiO 3 probed by mid-infrared absorption

Journal of the Physical Society of Japan

Volumn 75, Issue 2, 2006, Pages

  Okamura, Hidekazu ^a   Matsubara, Masato ^a   Tanaka, Koichiro ^b   Fukui, Kazutoshi ^c   Terakami, Mitsushi ^c   Nakagawa, Hideyuki ^c   Ikemoto, Yuka ^d   Moriwaki, Taro ^d   Kimura, Hiroaki ^d   Nanba, Takao ^a  

^a KOBE UNIVERSITY   (Japan)

^b KYOTO UNIVERSITY   (Japan)

^c UNIVERSITY OF FUKUI   (Japan)

^d JAPAN SYNCHROTRON RADIATION RESEARCH INSTITUTE   (Japan)

Author keywords

Infrared spectroscopy; Photocarriers; Quantum paraelectric; SrTiO 3 (strontium titanate)

Indexed keywords

EID: 33244460554     PISSN: 00319015     EISSN: 00319015     Source Type: Journal    
DOI: 10.1143/JPSJ.75.023703     Document Type: Article

References (22)

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20. Similar measurements were also carried out in a reflection geometry. The R(ω) spectra of the same (wedged) sample showed almost negligible photoinduced change. However, R(ω) of another sample without a wedge exhibited a photoinduced decrease (not shown) very similar to A(ω) in Fig. 2. In this case, R(ω) contained the IR beam reflected from the rear face of the sample (hence, passing through the sample). These results demonstrate that the observed PIA is indeed due to a change in the absorption of STO, rather than that in the reflectivity.
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