Role of defects, resonances, anharmonicities and electron-phonon scattering processes on thermal conductivity of YBa2Cu3O7-δ

被引：2

作者：

Ashokan, Vinod ^{[1
,2
]}

Indu, B. D. ^{[2
]}

Dimri, A. Kr. ^{[3
]}

机构：

[1] Panjab Univ, Dept Phys, Ctr Adv Study Phys, Chandigarh 160014, India

[2] Indian Inst Technol Roorkee, Dept Phys, Roorkee 247667, Uttrakhand, India

[3] MS PG Coll, Dept Phys, Saharanpur 247001, UP, India

来源：

MODERN PHYSICS LETTERS B | 2016年 / 30卷 / 26期

关键词：

Anharmonic lattice modes; cuprates; lattice dynamics; electronic transport; HIGH-TEMPERATURE SUPERCONDUCTORS; HIGH-TC SUPERCONDUCTORS; CRYSTALS;

D O I：

10.1142/S0217984916503607

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this work, thermal conductivity of high temperature superconductors (HTS) has been analyzed on the basis of modified Callaway model. In the new formulation, the relaxation times of various contributing processes have been observed in newer perspectives of electron and phonon line widths. To obtain line widths, the quantum dynamics of electron and phonon is carried out by using double time thermodynamic Green's functions method via a general Hamiltonian. The outcome of this heuristic approach is utilized to successfully explain the spectacular behavior of thermal conductivity of HTS, and particularly in the vicinity of transition temperature.

引用

页数：9

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