Anomalous photoconductivity in SrTiO3

被引：51

作者：

Katsu, H ^{[1
]}

Tanaka, H ^{[1
]}

Kawai, T ^{[1
]}

机构：

[1] Osaka Univ, Inst Sci & Ind Res, Ibaraki, Osaka 5670047, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 2000年 / 39卷 / 5A期

关键词：

SrTiO3 single crystal; photoconduction; phase transition; band-gap;

D O I：

10.1143/JJAP.39.2657

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have measured the photoconductivity of insulative SrTiO3 single crystal whose band-gap is 3.2 eV. We have found that the dependence of resistivity on temperature shows metallic conduction under white light irradiation and the resistivity drops rapidly below 105 K. This temperature at which a giant photoconductivity phenomenon occurs coincides with that of the cubic-to-tetragonal structural phase transition, suggesting that the anomalous photoconductivity is related to the structural phase transition.

引用

页码：2657 / 2658

页数：2

共 7 条

[1]

CAPPZI M, 1970, PHYS REV LETT, V25, P1298

[2] EFFECT OF 110DEGREESK PHASE-TRANSITION ON SRTIO3 CONDUCTION BANDS [J].

MATTHEISS, LF .

PHYSICAL REVIEW B, 1972, 6 (12) :4740-4753

[3] DIELECTRIC AND X-RAY STUDIES OF CACHIBA1-CHITIO3 AND CACHISR1-CHITIO3 [J].

MITSUI, T ;

WESTPHAL, WB .

PHYSICAL REVIEW, 1961, 124 (05) :1354-&

[4] DEPENDENCE OF SUPERCONDUCTING TRANSITION TEMPERATURE ON CARRIER CONCENTRATION IN SEMICONDUCTING SRTIO3 [J].

SCHOOLEY, JF ;

HOSLER, WR ;

AMBLER, E ;

BECKER, JH ;

COHEN, ML ;

KOONCE, CS .

PHYSICAL REVIEW LETTERS, 1965, 14 (09) :305-+

[5] ELECTRON SPIN RESONANCE OF FE3+ IN SRTIO3 WITH SPECIAL REFERENCE TO 110 DEGREES K PHASE TRANSITION [J].

UNOKI, H ;

SAKUDO, T .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1967, 23 (03) :546-&

[6] PHOTO-HALL EFFECT IN STRONTIUM TITANATE [J].

YASUNAGA, H .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1968, 24 (05) :1035-&

[7] PHOTOCONDUCTION OF STRONTIUM TITANATE [J].

YASUNAGA, H ;

NAKADA, I .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1967, 22 (01) :338-&

← 1 →