42 citations · 73 across the 4 of their papers we have counts for
5 papers
Impact of the lattice on magnetic properties and possible spin nematicity in the S=1 triangular antiferromagnet NiGaS
Michael E. Valentine, Tomoya Higo, Yusuke Nambu +5
NiGaS is a triangular lattice S=1 system with strong two-dimensionality of the lattice, actively discussed as a candidate to host spin-nematic order brought about by strong…
Dynamical Bonding Driving Mixed Valency in a Metal Boride
Paul J. Robinson, Julen Munarriz, Michael E. Valentine +6
Samarium hexaboride is an anomaly, having many exotic and seemingly mutually incompatible properties. It was proposed to be a mixed-valent semiconductor, and later - a topological…
An effect of Sm vacancies on the hybridization gap in topological Kondo insulator candidate SmB
Michael E. Valentine, Seyed Koohpayeh, W. Adam Phelan +4
A necessary element for the predicted topological state in Kondo insulator SmB is the hybridization gap which opens in this compound at low temperatures. In this work, we prese…
Breakdown of the Kondo insulating state in SmB6 by introducing Sm vacancies
Michael E. Valentine, Seyed Koohpayeh, W. Adam Phelan +4
SmB6 is a proposed topological Kondo insulator where the presence of topological nontriviality can be tuned by variations in the Sm valence. Experimentally, Sm valence can be chang…
Raman study of magnetic excitations and magneto-elastic coupling in alpha-SrCr2O4
Michael Valentine, Seyed Koohpayeh, Martin Mourigal +8
Using Raman spectroscopy, we investigate the lattice phonons, magnetic excitations, and magneto-elastic coupling in the distorted triangular-lattice Heisenberg antiferromagnet alph…