Frequency-dependent thermal response of the charge system and restricted sum rules in La2-xSrxCuO4

被引：57

作者：

Ortolani, M

Calvani, P

Lupi, S

机构：

[1] Univ Roma La Sapienza, Coherentia INFM, I-00185 Rome, Italy

[2] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.94.067002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In La2-xSrxCuO4 ( LSCO) the spectral weight W = integral(0)(Omega)sigma(1)(ab)(omega,T)domega [where sigma(1)(ab)(omega,T) is the ab-plane conductivity] obeys the same law W = W-0 - B(Omega)T-2 as in a conventional metal such as gold, for any Omega up to the plasma edge. However, in LSCO B(Omega) points toward correlation effects and, unlike in gold, is related to an energy scale t(T) much less than t(0) similar to W-0. The Ferrell-Glover-Tinkham sum rule is fulfilled in LSCO superconductors for Omega greater than or similar to 2000 cm(-1).

引用

收藏

页数：4

相关论文

共 22 条

[11] The optical conductivity of La2-xSrxCuO4 in connection with a charge stripe scenario [J].

Lupi, S ;

Ortolani, M ;

Lucarelli, A ;

Perla, A ;

Calvani, P ;

Maselli, P ;

Kikugawa, N ;

Fujita, T .

JOURNAL OF SUPERCONDUCTIVITY, 2004, 17 (01) :131-136

[12] Superconductivity-induced transfer of in-plane spectral weight in Bi2Sr2Ca2O8+δ [J].

Molegraaf, HJA ;

Presura, C ;

van der Marel, D ;

Kes, PH ;

Li, M .

SCIENCE, 2002, 295 (5563) :2239-2241

[13] PHENOMENOLOGICAL MODELS FOR THE GAP ANISOTROPY OF BI2SR2CACU2O8 AS MEASURED BY ANGLE-RESOLVED PHOTOEMISSION SPECTROSCOPY [J].

NORMAN, MR ;

RANDERIA, M ;

DING, H ;

CAMPUZANO, JC .

PHYSICAL REVIEW B, 1995, 52 (01) :615-622

[14]

ORTOLANI M, 0407433

[15] Band-structure trend in hole-doped cuprates and correlation with Tc max -: art. no. 047003 [J].

Pavarini, E ;

Dasgupta, I ;

Saha-Dasgupta, T ;

Jepsen, O ;

Andersen, OK .

PHYSICAL REVIEW LETTERS, 2001, 87 (04) :47003-1

[16] Pairing in cuprates from high-energy electronic states [J].

Santander-Syro, AF ;

Lobo, RPSM ;

Bontemps, N ;

Konstantinovic, Z ;

Li, ZZ ;

Raffy, H .

EUROPHYSICS LETTERS, 2003, 62 (04) :568-574

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

Santander-Syro, AF ;

Lobo, RPSM ;

Bontemps, N ;

Konstantinovic, Z ;

Li, Z ;

Raffy, H .

PHYSICAL REVIEW LETTERS, 2002, 88 (09) :4

[18] Comment on "Phase diagram of La2-xSrxCuO4 probed in the infrared:: Imprints of charge stripe excitations" -: art. no. 129701 [J].

Tajima, S ;

Uchida, S ;

van der Marel, D ;

Basov, DN .

PHYSICAL REVIEW LETTERS, 2003, 91 (12) :1-129702

[19]

TAJIMA S, IN PRESS PHYS REV B

[20] The pseudogap in high-temperature superconductors: an experimental survey [J].

Timusk, T ;

Statt, B .

REPORTS ON PROGRESS IN PHYSICS, 1999, 62 (01) :61-122