Pressure Studies near Quantum Phase Transitions in Strongly Correlated Ce Systems.

• Sparn G.

  Max-Planck-Institut für chemische Physik fester Stoffe

• Donnevert L.

  Institut für Festkörperphysik

• Hellmann P.

  Institut für Festkörperphysik

• Horn R.

  Institut für Festkörperphysik

• Laube F.

  Institut für Festkörperphysik

• Link A.

  Institut für Festkörperphysik

• Thomas S.

  Institut für Festkörperphysik

• Gegenwart P.

  Institut für Festkörperphysik

• Buschinger B.

  Institut für Festkörperphysik

• Geibel C.

  Max-Planck-Institut für chemische Physik fester Stoffe

• Steglich F.

  Max-Planck-Institut für chemische Physik fester Stoffe Institut für Festkörperphysik

Bibliographic Information

Other Title

• Pressure Studies Near Quantum Phase Tra

Abstract

Non-Fermi-liquid (NFL) effects in the temperature dependences of both the resistivity and specific heat have been investigated at hydrostatic tatic static pressures p≤1. 7GPa and magnetic fields B≤8T for "A-type" CeCu₂Si₂, some of its disordered derivatives and its homologue CeNi2Ge2. In dilute (La, Ce) Cu_{2. 2.} Si₂, the NFL phenomena hint at a quantum critical point of spin-glass type. In CeCu₂Si₂, NFL effects show up at the breakdown of phase A. However, the data cannot be explained consistently by the properties of a "nearly antiferromagnetic Fermi liquid". The origin of the NFL effects in CeNi₂Ge₂ is yet unclear. For this compound, a novel phase transition at T₁=0. 9 K (p=1. 7GPa) and an incipient superconducting transition below T=0. 1 K (p=0) in a very clean sample are discovered.

Journal

• The Review of High Pressure Science and Technology

  The Review of High Pressure Science and Technology 7 431-436, 1998

  The Japan Society of High Pressure Science and Technology

Keywords

• heavy fermions
• heavy-fermion superconductivity
• Kondo lattice
• quantum critical point
• non-Fermi liquid

Details

• CRID: 1390001204382309888
• NII Article ID: 10002690427
• NII Book ID: AN10452913
• DOI: 10.4131/jshpreview.7.431
• ISSN: 13481940
• ISSN: 0917639X
• NDL BIB ID: 4493945
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4493945
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed