Effect of light on the reflectance anisotropy and chain-oxygen related Raman signal in untwinned, underdoped crystals of YBa2Cu3O7-δ

被引：14

作者：

Bahrs, S

Bruchhausen, A

Goñi, AR

Nieva, G

Fainstein, A

Fleischer, K

Richter, W

Thomsen, C

机构：

[1] Tech Univ Berlin, Inst Festkorperphys, D-10623 Berlin, Germany

[2] Ctr Atom Bariloche, Comis Nacl Energia Atom, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina

[3] ICREA Res Prof, Inst Ciencia Mat Barcelona, E-08193 Barcelona, Spain

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2006年 / 67卷 / 1-3期

关键词：

oxides; superconductors; dielectric properties; electronic structure; optical properties;

D O I：

10.1016/j.jpcs.2005.10.058

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Recent studies of the optical anisotropy of a detwinned, underdoped YBa2Cu3O7-delta-crystal showed that illumination-induced change and recovery in the surface reflectance can be traced on a time scale of hours. This effect of light is also known from Raman bleaching and electrical transport and shares features of the oxygen reordering processes above room temperature. We report temperature-dependent studies of the optical anisotropy using reflectance anisotropy spectroscopy and present time-dependent data for the optical transitions at 2.2 and 4.4 eV. We compare our results to Raman bleaching and discuss them within the picture of superstructure patterns and oxygen-defect reordering in underdoped YBa2Cu3O7-delta. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：340 / 343

页数：4

共 14 条

[1] REFLECTANCE-DIFFERENCE SPECTROSCOPY SYSTEM FOR REAL-TIME MEASUREMENTS OF CRYSTAL-GROWTH [J].

ASPNES, DE ;

HARBISON, JP ;

STUDNA, AA ;

FLOREZ, LT .

APPLIED PHYSICS LETTERS, 1988, 52 (12) :957-959

[2] Light-induced oxygen-ordering dynamics in (Y,Pr)Ba2Cu3O6.7:: A Raman spectroscopy and Monte Carlo study -: art. no. 014512 [J].

Bahrs, S ;

Goñi, AR ;

Thomsen, C ;

Maiorov, B ;

Nieva, G ;

Fainstein, A .

PHYSICAL REVIEW B, 2004, 70 (01) :014512-1

[3] Rare-earth dependence of photoinduced chain-oxygen ordering in RBa2Cu3O7-x (x≈0.3) investigated by Raman scattering -: art. no. 024522 [J].

Bahrs, S ;

Goñi, AR ;

Thomsen, C ;

Maiorov, B ;

Nieva, G ;

Fainstein, A .

PHYSICAL REVIEW B, 2002, 65 (02) :1-5

[4]

BAHRS S, 2005, IN PRESS

[5]

BAUER G, 1996, OPTICAL CHARACTERIZA

[6] Photoinduced chain-oxygen ordering in detwinned YBa2Cu3O6.7 single crystals studied by reflectance-anisotropy spectroscopy -: art. no. 224508 [J].

Bruchhausen, A ;

Bahrs, S ;

Fleischer, K ;

Goñi, AR ;

Fainstein, A ;

Nieva, G ;

Aligia, AA ;

Richter, W ;

Thomsen, C .

PHYSICAL REVIEW B, 2004, 69 (22) :224508-1

[7] Annealing disorder and photoinduced order of oxygen chains in detwinned YBa2Cu3O6.65 single crystals probed by Raman scattering [J].

Fainstein, A ;

Maiorov, B ;

Guimpel, J ;

Nieva, G ;

Osquiguil, E .

PHYSICAL REVIEW B, 2000, 61 (06) :4298-4304

[8]

KALL M, 1998, PHYS REV B, V57, P14072

[9] ANISOTROPY OF THE OPTICAL DIELECTRIC FUNCTION IN THE AB PLANE FOR YBA2CU3O7-DELTA [J].

KOTZ, AL ;

KLEIN, MV ;

LEE, WC ;

GIAPINTZAKIS, J ;

GINSBERG, DM ;

VEAL, BW .

PHYSICAL REVIEW B, 1992, 45 (05) :2577-2580

[10] PHOTOINDUCED ENHANCEMENT OF SUPERCONDUCTIVITY [J].

NIEVA, G ;

OSQUIGUIL, E ;

GUIMPEL, J ;

MAENHOUDT, M ;

WUYTS, B ;

BRUYNSERAEDE, Y ;

MAPLE, MB ;

SCHULLER, IK .

APPLIED PHYSICS LETTERS, 1992, 60 (17) :2159-2161

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