Zero-Point Motion of Oxygen and Anomalous Isotope Effect in Sr<SUB>2</SUB>RuO<SUB>4</SUB>

• Okada Akihisa

  Division of Material Physics, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University

• Miyake Kazumasa

  Division of Material Physics, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University

Bibliographic Information

Other Title

• Zero-point motion of oxygen and anomalous isotope effect in Sr2RuO4

Abstract

Anomalous behavior of the isotope effect coefficient α of Sr₂RuO₄ under impurity scattering is discussed on the basis of the d–p model. By taking into account the anharmonic zero-point motion of oxygen atoms, we obtain a new relation for impurity dependence on α, reproducing the behavior that α is negative in pure sample, but it becomes positive with small amount of impurities for a reasonable set of parameters.

Journal

• Journal of the Physical Society of Japan

  Journal of the Physical Society of Japan 77 (9), 093707-093707, 2008

  THE PHYSICAL SOCIETY OF JAPAN

Keywords

• Sr<SUB>2</SUB>RuO<SUB>4</SUB>
• superconductivity
• isotope effect
• impurity effect
• zero-point motion

Details

• CRID: 1390282679174091520
• NII Article ID: 130005436993
• NII Article ID: 110006933468
• NII Article ID: 210000107404
• NII Book ID: AA00704814
• DOI: 10.1143/jpsj.77.093707
• ISSN: 13474073
• ISSN: 00319015
• NDL BIB ID: 9646016
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9646016
• Web Site: https://journals.jps.jp/doi/pdf/10.1143/JPSJ.77.093707
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed