Does the peak in the magnetic susceptibility determine the in-plane infrared conductivity of YBCO? A theoretical study

被引：35

作者：

Munzar, D ^{[1
]}

Bernhard, C ^{[1
]}

Cardona, M ^{[1
]}

机构：

[1] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1999年 / 312卷 / 1-2期

关键词：

far-infrared spectra; d-wave superconductor; spin fluctuations;

D O I：

10.1016/S0921-4534(98)00659-5

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present results of calculations of the in-plane far-infrared conductivity of optimum doped YBa2Cu3O7-delta in the normal and in the superconducting states. The computations include inelastic scattering of planar quasiparticles by spin fluctuations, which are described by the spin susceptibility in the form of the magnetic peak observed by neutron scattering. The superconducting gap is assumed to have d(x2-y2) symmetry. Both the real and the imaginary parts of the self-energy are evaluated and used in computing the conductivity. The trends observed in experiments are well reproduced and a simple interpretation of the mid-infrared absorption in the normal and in the superconducting states is obtained. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：121 / 135

页数：15

共 66 条

[1] LDA energy bands, low-energy Hamiltonians, t', t'', t perpendicular to(k), and J perpendicular to. [J].

Andersen, OK ;

Liechtenstein, AI ;

Jepsen, O ;

Paulsen, F .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1995, 56 (12) :1573-1591

[2] Infrared conductivity of cuprate metals: Detailed fit using Luttinger-liquid theory [J].

Anderson, PW .

PHYSICAL REVIEW B, 1997, 55 (17) :11785-11788

[3]

[Anonymous], 1992, PHYS PROP HIGH TEMP

[4] Electronic c-axis response of Y1-xCaxBa2Cu3O7-δ crystals studied by far-infrared ellipsometry [J].

Bernhard, C ;

Henn, R ;

Wittlin, A ;

Klaser, M ;

Wolf, T ;

Muller-Vogt, G ;

Lin, CT ;

Cardona, M .

PHYSICAL REVIEW LETTERS, 1998, 80 (08) :1762-1765

[5] High-energy spin excitations in YBa2Cu3O6.5 [J].

Bourges, P ;

Fong, HF ;

Regnault, LP ;

Bossy, J ;

Vettier, C ;

Milius, DL ;

Aksay, IA ;

Keimer, B .

PHYSICAL REVIEW B, 1997, 56 (18) :11439-11442

[6] EVIDENCE FOR D-WAVE SUPERCONDUCTIVITY IN YBA2CU3O7-DELTA FROM FAR-INFRARED CONDUCTIVITY [J].

CARBOTTE, JP ;

JIANG, C ;

BASOV, DN ;

TIMUSK, T .

PHYSICAL REVIEW B, 1995, 51 (17) :11798-11805

[7] Electronic structure of underdoped cuprates [J].

Chubukov, AV ;

Morr, DK .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1997, 288 (1-6) :355-387

[8] Temperature variation of the pseudogap in underdoped cuprates [J].

Chubukov, AV ;

Schmalian, J .

PHYSICAL REVIEW B, 1998, 57 (18) :R11085-R11088

[9]

CHUBUKOV AV, CONDMAT9709221

[10]

CHUBUKOV AV, CONDMAT9806200

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