Entropy Landscape of Phase Formation Associated with Quantum Criticality in Sr3
Ru2O7

Rost, A. W.; Perry, R. S.; Mercure, J. -F.; Mackenzie, A. P.; Grigera, S. A.

doi:10.1126/science.1176627

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Entropy Landscape of Phase Formation Associated with Quantum Criticality in Sr₃Ru₂O₇

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Citation

Rost, A. W., Perry, R. S., Mercure, J.-.-F., Mackenzie, A. P., & Grigera, S. A. (2009). Entropy Landscape of Phase Formation Associated with Quantum Criticality in Sr₃Ru₂O₇. Science, 325(5946), 1360-1363. doi:10.1126/science.1176627.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0018-F240-1

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.