Determination of the Electronic Density of States of YBa2Cu3O7-delta

Abstract

We report precise measurements of the enthalpy of polycrystalline YBa2Cu3O7-delta at high temperatures (300 K < T < 700 K). From these data, we determine the lattice and electronic contributions to the specific heat. We find that anharmonicity must be included when calculating the lattice specific heat. We also find that the specific heat of the charge carriers follows the temperature dependence of a Fermi liquid with a Sommerfeld constant of 40 + or - 5 mJ/((mol)(K-sq). This value is three times larger than expected from band structure calculations.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1991
Accession Number
ADA243223

Entities

People

  • D. A. Ditmars
  • M. E. Reeves
  • S. A. Wolf
  • T. A. Vanderah

Organizations

  • Naval Air Weapons Station China Lake

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Band Structures
  • Bulk Modulus
  • Charge Carriers
  • Chemistry
  • Crystal Structure
  • Energy Bands
  • Enthalpy
  • Fermi Levels
  • Films
  • Heat Capacity
  • High Temperature
  • Measurement
  • Polycrystals
  • Specific Heat
  • Transition Temperature
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.
  • Thermal Physics or Thermal Science.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene