EXTRA-DRUDE ABSORPTION AND CRITICAL-TEMPERATURE IN SUPERCONDUCTING CUPRATES

被引：7

作者：

CALVANI, P

LUPI, S

机构：

[1] Dipartimento di Fisica - Università di Roma La Sapienza P.le A. Moro 2

来源：

SOLID STATE COMMUNICATIONS | 1993年 / 85卷 / 08期

关键词：

D O I：

10.1016/0038-1098(93)90568-8

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The reflectance of superconducting Nd2-xCexCuO4-y single crystals, and of Bi2Sr2CaCu2O8, Bi1.8Pb0.2Sr2CaCu2O8 and Bi2Sr2Ca2Cu3O10 highly oriented films with critical temperatures T(c) ranging from 14 to 95 K, has been measured at 300 K between 0.05 and 3 eV. The extra-Drude contribution to the optical conductivity often indicated as ''mid-infrared band'' has been identified in all samples. Its peak energy is shown to depend on T(c), and to tend towards zero as T(c) approaches the maximum values presently obtained in cuprates.

引用

页码：665 / 669

页数：5

共 23 条

[1] INFRARED REFLECTIVITY OF BI-SR-CA-CU-O HIGH-TC SUPERCONDUCTORS [J].

CALVANI, P ;

CAPIZZI, M ;

LUPI, S ;

MASELLI, P ;

PESCHIAROLI, D ;

KATAYAMAYOSHIDA, H .

SOLID STATE COMMUNICATIONS, 1990, 74 (12) :1333-1337

[2] HIGH-TC SUPERCONDUCTING THIN-FILMS - AN ANALYSIS OF REFLECTANCE SPECTRA [J].

CALVANI, P ;

CAPIZZI, M ;

LUPI, S ;

MASELLI, P ;

AGOSTINELLI, E .

PHYSICA C, 1991, 180 (1-4) :116-119

[3]

CALVANI P, IN PRESS INT J INFRA

[4] OPTICAL-ABSORPTION IN STRONG-COUPLING-LIMIT HUBBARD MODELS [J].

CHEN, CX ;

SCHUTTLER, HB .

PHYSICAL REVIEW B, 1991, 43 (04) :3771-3774

[5] PROPERTIES OF OPTICAL-FEATURES IN YBA2CU3O7-DELTA [J].

COOPER, SL ;

THOMAS, GA ;

ORENSTEIN, J ;

RAPKINE, DH ;

CAPIZZI, M ;

TIMUSK, T ;

MILLIS, AJ ;

SCHNEEMEYER, LF ;

WASZCZAK, JV .

PHYSICAL REVIEW B, 1989, 40 (16) :11358-11361

[6] INFRARED REFLECTION OF EPITAXIAL TL2BA2CACU2O8 THIN-FILMS IN THE NORMAL AND SUPERCONDUCTING STATES [J].

FOSTER, CM ;

VOSS, KF ;

HAGLER, TW ;

MIHAILOVIC, D ;

HEEGER, AJ ;

EDDY, MM ;

OLSON, WL ;

SMITH, EJ .

SOLID STATE COMMUNICATIONS, 1990, 76 (05) :651-654

[7] ANISOTROPY OF THE REFLECTANCE SPECTRUM AND OF THE DIELECTRIC FUNCTION OF YBA2CU3O7 WITHIN THE (001)PLANE [J].

KOCH, B ;

GESERICH, HP ;

WOLF, T .

SOLID STATE COMMUNICATIONS, 1989, 71 (06) :495-499

[8] INFRARED OPTICAL CONDUCTIVITY OF THE ND-CE-CU-O SYSTEM [J].

LUPI, S ;

CALVANI, P ;

CAPIZZI, M ;

MASELLI, P ;

SADOWSKI, W ;

WALKER, E .

PHYSICAL REVIEW B, 1992, 45 (21) :12470-12477

[9] APPLICATION OF THE POLARON-TRANSPORT THEORY TO SIGMA(OMEGA) IN TL2BA2CA1-XGDXCU2O8, YBA2CU3O7-DELTA, AND LA2-XSRXCUO4 [J].

MIHAILOVIC, D ;

FOSTER, CM ;

VOSS, K ;

HEEGER, AJ .

PHYSICAL REVIEW B, 1990, 42 (13) :7989-7993

[10] FREQUENCY-DEPENDENT AND TEMPERATURE-DEPENDENT CONDUCTIVITY IN YBA2CU3O6+X CRYSTALS [J].

ORENSTEIN, J ;

THOMAS, GA ;

MILLIS, AJ ;

COOPER, SL ;

RAPKINE, DH ;

TIMUSK, T ;

SCHNEEMEYER, LF ;

WASZCZAK, JV .

PHYSICAL REVIEW B, 1990, 42 (10) :6342-6362

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