Absence of a loss of in-plane infrared spectral weight in the pseudogap regime of Bi2Sr2CaCu2O8+δ -: art. no. 097005

被引：78

作者：

Santander-Syro, AF ^{[1
]}

Lobo, RPSM

Bontemps, N

Konstantinovic, Z

Li, Z

Raffy, H

机构：

[1] Ecole Super Phys & Chim Ind Ville Paris, Lab Phys Solide, CNRS, UPR 5, F-75231 Paris 5, France

[2] Univ Paris 11, Lab Phys Solide, F-91405 Orsay, France

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.88.097005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The ab-plane reflectance of Bi2Sr2CaCu2O8+delta (Bi-2212) thin films was measured in the 30-25 000 cm(-1) range for one underdoped (T-c = 70 K), and one overdoped sample (T-c = 63 K) down to 10 K. We find similar behaviors in the temperature dependence of the normal-state infrared response of both samples. Above T-c, the effective spectral weight, obtained from the integrated conductivity, does not decrease when T decreases, so that no opening of an optical pseudogap is seen. We suggest that these are consequences of the pseudogap opening in the k = (0, pi) direction and of the in-plane infrared conductivity being mostly sensitive to the k = (pi, pi) direction.

引用

页数：4

共 18 条

[1] Y-89 NMR EVIDENCE FOR A FERMI-LIQUID BEHAVIOR IN YBA2CU3O6+X [J].

ALLOUL, H ;

OHNO, T ;

MENDELS, P .

PHYSICAL REVIEW LETTERS, 1989, 63 (16) :1700-1703

[2]

ASHCROFT NW, 1976, SOLID STATE PHYS, P252

[3] Pseudogap and charge dynamics in CuO2 planes in YBCO [J].

Basov, DN ;

Liang, R ;

Dabrowski, B ;

Bonn, DA ;

Hardy, WN ;

Timusk, T .

PHYSICAL REVIEW LETTERS, 1996, 77 (19) :4090-4093

[4] Pseudogap in the normal state of cuprates [J].

Bouvier, J ;

Bok, J .

JOURNAL OF SUPERCONDUCTIVITY, 2000, 13 (06) :995-998

[5] Electronic spectra and their relation to the (π,π) collective mode in high-Tc superconductors [J].

Campuzano, JC ;

Ding, H ;

Norman, MR ;

Fretwell, HM ;

Randeria, M ;

Kaminski, A ;

Mesot, J ;

Takeuchi, T ;

Sato, T ;

Yokoya, T ;

Takahashi, T ;

Mochiku, T ;

Kadowaki, K ;

Guptasarma, P ;

Hinks, DG ;

Konstantinovic, Z ;

Li, ZZ ;

Raffy, H .

PHYSICAL REVIEW LETTERS, 1999, 83 (18) :3709-3712

[6] IMPORTANCE OF PHASE FLUCTUATIONS IN SUPERCONDUCTORS WITH SMALL SUPERFLUID DENSITY [J].

EMERY, VJ ;

KIVELSON, SA .

NATURE, 1995, 374 (6521) :434-437

[7] Pseudogap behavior in single-crystal Bi2Sr2CaCu2O8+δ probed by Cu NMR [J].

Ishida, K ;

Yoshida, K ;

Mito, T ;

Tokunaga, Y ;

Kitaoka, Y ;

Asayama, K ;

Nakayama, Y ;

Shimoyama, J ;

Kishio, K .

PHYSICAL REVIEW B, 1998, 58 (10) :R5960-R5963

[8] Quasiparticles in the superconducting state of Bi2Sr2CaCu2O8+δ [J].

Kaminski, A ;

Mesot, J ;

Fretwell, H ;

Campuzano, JC ;

Norman, MR ;

Randeria, M ;

Ding, H ;

Sato, T ;

Takahashi, T ;

Mochiku, T ;

Kadowaki, K ;

Hoechst, H .

PHYSICAL REVIEW LETTERS, 2000, 84 (08) :1788-1791

[9] Temperature dependence of the resistivity of oxygen controlled Bi2Sr2CaCu2O8+δ thin films:: pseudogap effect [J].

Konstantinovic, Z ;

Li, ZZ ;

Raffy, H .

PHYSICA B-CONDENSED MATTER, 1999, 259-61 :567-568

[10] a-b plane optical conductivity in YBa2Cu3O7-δ above and below T* [J].

Mihailovic, D ;

Mertelj, T ;

Muller, KA .

PHYSICAL REVIEW B, 1998, 57 (10) :6116-6120

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