1. Entropy landscape of phase formation associated with quantum criticality in [Sr.sub.3][Ru.sub.2][O.sub.7]
- Author
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Rost, A.W., Perry, R.S., Mercure, J.-F., Mackenzie, A.P., and Grigera, S.A.
- Subjects
Phase transformations (Statistical physics) -- Research ,Entropy (Physics) -- Research ,Science and technology - 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 magnetocaioric effect and specific heat allows a comprehensive study of the entropy of a system. We present a quantitative measurement of the entropic landscape of [Sr.sub.3][Ru.sub.2][O.sub.7], 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.
- Published
- 2009