Hidden fluctuations close to a quantum bicritical point
- đ¤ Speaker: Corenting Morice, CEA, University of Paris-Saclay.
- đ Date & Time: Wednesday 15 March 2017, 11:15 - 12:15
- đ Venue: Mott Seminar Room (531), Cavendish Laboratory, Department of Physics
Abstract
We describe physical properties arising in the vicinity of two coupled quantum phase transitions by considering a phenomenological model based on two scalar order parameter fields locally coupled biquadratically and having a common quantum critical point as a function of a quantum tuning parameter such as pressure or magnetic field. A self-consistent treatment suggests that the uniform static susceptibilities of the two order parameter fields may have the same qualitative form at low temperature even where the forms differ sharply in the absence of the biquadratic coupling. The possible limitations of the self-consistent analysis leading to this prediction are considered.
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Corenting Morice, CEA, University of Paris-Saclay.
Wednesday 15 March 2017, 11:15-12:15