Temperature dependence of the optical spectral weight in the cuprates: Role of electron correlations

被引：60

作者：

Toschi, A

Capone, M

Ortolani, M

Calvani, P

Lupi, S

Castellani, C

机构：

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

[2] Univ Roma La Sapienza, INFM, SMC, I-00185 Rome, Italy

[3] ISC, CNR, I-00185 Rome, Italy

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

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.95.097002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We compare calculations based on the dynamical mean-field theory of the Hubbard model with the infrared spectral weight W(Omega,T) of La2-xSrxCuO4 and other cuprates. Without using fitting parameters we show that most of the anomalies found in W(Omega,T) with respect to normal metals, including the existence of two different energy scales for the doping and the T dependence of W(Omega,T), can be ascribed to strong correlation effects.

引用

收藏

页数：4

相关论文

共 28 条

[1]

BENHFATTO L, 2005, PHYS REV B, V71, P4511

[2] In-plane spectral weight shift of charge carriers in YBa2Cu3O6.9 [J].

Boris, AV ;

Kovaleva, NN ;

Dolgov, OV ;

Holden, T ;

Lin, CT ;

Keimer, B ;

Bernhard, C .

SCIENCE, 2004, 304 (5671) :708-710

[3] Optical spectral weight distribution in d-wave superconductors -: art. no. 224501 [J].

Carbotte, JP ;

Schachinger, E .

PHYSICAL REVIEW B, 2004, 69 (22) :224501-1

[4] Optical spectral weights and the ferromagnetic transition temperature of colossal-magnetoresistance manganites: Relevance of double exchange to real materials [J].

Chattopadhyay, A ;

Millis, AJ ;

Das Sarma, S .

PHYSICAL REVIEW B, 2000, 61 (16) :10738-10749

[5] GROWTH OF THE OPTICAL CONDUCTIVITY IN THE CU-O PLANES [J].

COOPER, SL ;

THOMAS, GA ;

ORENSTEIN, J ;

RAPKINE, DH ;

MILLIS, AJ ;

CHEONG, SW ;

COOPER, AS ;

FISK, Z .

PHYSICAL REVIEW B, 1990, 41 (16) :11605-11608

[6] 2 HUBBARD BANDS - WEIGHT TRANSFER IN OPTICAL AND ONE-PARTICLE SPECTRA [J].

ESKES, H ;

OLES, AM .

PHYSICAL REVIEW LETTERS, 1994, 73 (09) :1279-1282

[7] OPTICAL-EXCITATION OF POLARONIC IMPURITIES IN LA2CUO4+Y [J].

FALCK, JP ;

LEVY, A ;

KASTNER, MA ;

BIRGENEAU, RJ .

PHYSICAL REVIEW B, 1993, 48 (06) :4043-4046

[8] Dynamical mean-field theory of strongly correlated fermion systems and the limit of infinite dimensions [J].

Georges, A ;

Kotliar, G ;

Krauth, W ;

Rozenberg, MJ .

REVIEWS OF MODERN PHYSICS, 1996, 68 (01) :13-125

[9] FERMI-LIQUID PARAMETERS AND SUPERCONDUCTING INSTABILITIES OF A GENERALIZED TERT-J MODEL [J].

GRILLI, M ;

KOTLIAR, G .

PHYSICAL REVIEW LETTERS, 1990, 64 (10) :1170-1173

[10] Nonlocal dynamical correlations of strongly interacting electron systems [J].

Hettler, MH ;

Tahvildar-Zadeh, AN ;

Jarrell, M ;

Pruschke, T ;

Krishnamurthy, HR .

PHYSICAL REVIEW B, 1998, 58 (12) :R7475-R7479