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Dwight Adams studies the nuclear magnetism of solid 3He at one millikelvin and below. Techniques such as heat capacity, constant-volume pressure, and NMR are used to study the magnetically ordered states. Currently, efforts are underway to observe ferromagnetism in the high-pressure hcp phase. Studies at high magnetic fields are conducted in the high B/T facility. Other research interests include helium in confined geometries and low temperature techniques.
Gary Ihas, with his collaborators at UF and elsewhere uses various probes, such as electrical and thermal conductivity, magneto-resistance, ultra-sound, NMR, and heat capacity measurements to study nanostructures, conducting polymers, and the liquid heliums. His group uses ultrasound to study 3He superfluids, and he works woth colleagues in the study of turbulence in the liquid heliums. Gary Ihas and Neil Sullivan also study the properties of molecular and atomic hydrogen in cryogenic matrices to determine the basic properties of possible new rocket propellants.
Mark Mesiel studies the electromagnetic and thermodynamic properties of a variety of systems exhibiting quantum mechanical phenomena. In the millikelvin temperature range, the research focuses on novel superconducting and heavy fermion materials, low dimensional organic and inorganic conductors and magnets, and nanostructured antiferromagnetic particles. The millikelvin research is extended to the microkelvin regime when the behavior of the systems requires further clarification. In addition, superfluid 3He is studied at microkelvin temperatures using ultrasonic techniques.
Neil Sullivan and colleagues investigate the fundamental dynamics of quantum solids (H 2, 3He, 4He, HD,....) at very low temperatures using modern NMR techniques. The orientational ordering of molecular crystals, both quantum rotors (H2) and classical rotors (N2) are being studied to determine the quadrupolar glass ordering. The group also studies the quantum diffusion of isotopic impurities 3He in 4He and HD in solid para-H2 both experimentally and theoretically.
Yoonseok Lee and collaborators explore the low temperature properties of superfluid helium three, using ultrasound and thermodynamic techniques to understand the nature of p-wave pairing and the basic symmetries of the superfluid. Recent work includes studying superfuid 3He in the presence of quenched disorder realized by high porosity aerogel. He is also interested in the investigation of sub-dominant pairing interaction and pair fluctuation phenomena in superfluid 3He.
Yasumasa Takano investigates nuclear magnetism at ultralow temperatures. He and his collaborators including Dwight Adams focus on solid 3He.
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