Entropy Landscape of Phase Formation Associated with Quantum Criticality in Sr3Ru2O7

Andreas Winfried Rost, R. S. Perry, Jean-Francois Mercure, Andrew Mackenzie, Santiago Andres Grigera

Research output: Contribution to journalArticlepeer-review

104 Citations (Scopus)

Abstract

Low-temperature phase transitions and the associated quantum critical points are a major field of research, but one in which experimental information about thermodynamics is sparse. Thermodynamic information is vital for the understanding of quantum many-body problems. We show that combining measurements of the magnetocaloric effect and specific heat allows a comprehensive study of the entropy of a system. We present a quantitative measurement of the entropic landscape of Sr3Ru2O7, a quantum critical system in which magnetic field is used as a tuning parameter. This allows us to track the development of the entropy as the quantum critical point is approached and to study the thermodynamic consequences of the formation of a novel electronic liquid crystalline phase in its vicinity.

Original languageEnglish
Pages (from-to)1360-1363
Number of pages4
JournalScience
Volume325
Issue number5946
DOIs
Publication statusPublished - 11 Sept 2009

Keywords

  • MAGNETIC-FIELD
  • RUTHENATE SR3RU2O7
  • SUPERCONDUCTIVITY
  • INSTABILITY
  • STATE
  • MODEL

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