First study of the B1g buckling phonon mode in optimally doped, de-twinned, YBa2Cu3O7-δ by inelastic X-ray scattering

被引：22

作者：

Baron, Alfred Q. R. ^{[1
,2
]}

Sutter, John P. ^{[2
]}

Tsutsui, Satoshi ^{[2
]}

Uchiyama, Hiroshi ^{[2
]}

Masui, Takahiko ^{[3
]}

Tajima, Setsuko ^{[3
,4
]}

Heid, Rolf ^{[5
]}

Bohnen, Klaus-Peter ^{[5
]}

机构：

[1] SPring 8 RIKEN, Sayo, Hyogo 6795148, Japan

[2] SPring 8 JASRI, Sayo, Hyogo 6795198, Japan

[3] Osaka Univ, Dept Phys, Osaka 5600043, Japan

[4] ISTEC, SRL, Tokyo 1350062, Japan

[5] Inst Festkorperphys, Forsch Karlsruhe, D-76021 Karlsruhe, Germany

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2008年 / 69卷 / 12期

关键词：

Phonons;

D O I：

10.1016/j.jpcs.2008.06.119

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We have measured the buckling, B-1g, phonon mode of optimally doped, de-twinned, YBa2Cu3O7-delta using inelastic X-ray scattering (IXS) at BL35XU of SPring-8. Measurements of this mode, which has atomic motion transverse to the Cu-O planes, serve to demonstrate some of the advantages of the unique two-dimensional (2-D) analyzer array at BL35. Analysis based on fitting the entire spectra simultaneously at 10 and 100 K shows that the buckling mode is rather broad in the middle of the zone (near (0.3 0 0)). We see a consistent softening of the mode at 10K as compared to 100K for all measured wave-vectors (h 0 0), and a q-dependent softening as zone center is approached. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：3100 / 3102

页数：3

共 13 条

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