Pressure-Temperature Phase Diagram of Golden SmS

Abstract

We measured the thermal expansion of the valence fluctuating phase of SmS (golden SmS) to construct a pressure vs temperature phase diagram. The obtained phase diagram is characterized by three lines. One is a crossover line that divides the paramagnetic phase into two regions. The other two lines correspond to a second-order Neel transition and a first-order Neel transition. The crossover line appears to emerge from a tricritical point that separates the first-order Neel transition from the second-order one. We argue that a valence jump occurs at the border of antiferromagnetism.

5 pages, 5 figures

References in corpus (3)

• Universally diverging Grueneisen parameter and the magnetocaloric effect close to quantum critical points
• Divergence of the Grueneisen Ratio at Quantum Critical Points in Heavy Fermion Metals
• Excitonic Instability in the Transition from the Black Phase to the Golden Phase of SmS under Pressure Investigated by Infrared Spectroscopy

Cited by in corpus (5)

• Topological properties and the dynamical crossover from mixed-valence to Kondo-lattice behavior in golden phase of SmS
• Kondo-induced giant isotropic negative thermal expansion
• Trends in Heavy Fermion Matter
• Discontinuous Transition from a Real Bound State to Virtual Bound State in a Mixed-Valence State of SmS
• Nonmagnetic-magnetic transition and magnetically ordered structure in SmS