Microkelvin People


James Hamlin


Phone: 352.392.4947

Office: NPB 2263

Personal Website

Dr. Hamlin's research is directed towards utilizing a combination of materials synthesis, ambient pressure characterization, and high pressure and high magnetic field measurements to advance our understanding of novel and potentially useful electronic and magnetic materials. In particular, we study the formation of unconventional and/or high temperature superconducting states in the vicinity of quantum phase transitions, although in the course of characterizing new materials, other phenomena are also investigated.
Chao Huan

Email: huan@ufl.edu

Phone: 352.846.0823

Office: Williamson 283


Dr. Huan's research is mainly focused on the experimental investigation of the dynamics of quantum solid and liquid at low temperature with NMR methods. He am also interested in the quantum transport in mesoscopic systems.
Dominique LaRoche


Phone: 352.392.8591

Office: NPB 2261

Personal Website

Dr. Laroche’s research is directed towards the design and fabrication of quantum-devices coupled at the nanoscale and in the study of the interactions that arise between these closely packed systems at ultra-low temperatures. Dr. Laroche’s current interests include the study of electron-electron interactions in Luttinger liquids, topological quantum computing with Majorana quasiparticles, induced superconductivity in low-dimensional systems and quantum transport in high mobility bilayer heterostructures.
Yoonseok Lee


Phone: 352.392.6689

Office: NPB 2233

Personal Website

Dr. 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. His recent interest is in understanding the role of various disorder in bulk and thin films of superfluid helium three. For this purpose, he has developed novel micro-machined mechanical oscillators or MEMS oscillators using silicon nano-fabrication technology.
Mark Meisel

Email: meisel@phys.ufl.edu

Phone: 352.392.8867

Office: NPB 2358

Personal Website

Dr. Meisel 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.
Neil Sullivan


Phone: 352.846.3137

Office: NPB 2235

Personal Website

Dr. Sullivan and colleagues investigate the fundamental dynamics of quantum solids (H2, 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.

Lucia Steinke

Email: lucia.steinke@ufl.edu

Phone: 352.392.0521

Office: NPB


Dr. Steinke is the Microkelvin Lab Manager and Microkelvin/Williamson Hall Safety Person.  
Yasumasa Takano 

Email: takano@phys.ufl.edu

Phone: 352.402.9326

Office: NPB 2356

Personal Website

Dr. Takano studies quantum magnetism, nuclear magnetism, quantum fluids, and quantum solids.                       


Naoto Masuhara


Phone: 352.392.8869

Office: Microkelvin Laboratory

Dr. Masuhara, a senior engineer, is responsible for the operations and user support for Bay 2 of NHMFL High B/T Facility and the operation of the Microkelvin Laboratory building. His specialty includes magnetic resonances, ultrasound spectroscopy, non-linear optical spectroscopy and ultra-low temperature techniques. His recent interest is focused on developing novel experimental methods by combining different techniques to measure new properties of quantum matter.
Amy C. Howe 

Email: amy.howe@ufl.edu

Phone: 352.294.4786

Office: MBI LG-115

Amy is the outreach coordinator for the National High Magnetic Field Lab at the University of Florida. She is responsible for the MagLab REU program at UF and maintains the Microkelvin website.

Postdoctoral Associates

Andrew Woods


Phone: 352.392.0485

Office: Williamson 113

Dr. Woods’ research has focused on the study of quantum turbulence in superfluid 3He and 4He using vibrating objects such as wires and tuning forks. In particular the development of a two-dimensional quasiparticle detector for use in visualising quantum turbulence in superfluid 3He-B at ultra-low temperatures (< 200 μK). Turbulence in classical fluids is an incredibly complex, unsolved mathematical problem. Turbulence in quantum fluids is conceptually much more simple, and investigating its properties may reveal information which leads to a more complete understanding of the behavior of all turbulent systems.


Ryuji Nomura

Microkelvin visitor from March 11-18, 2018 and March 19-24, 2019

Personal Website

Host: Yoonseok Lee

Professor Nomura is an Assistant Professor at Tokyo Institute of Technology. His research interest is in two areas: quantum crystal growth and topological phenomena in quantum condensates. He is a leading investigator in solid formation in superfluid 4He especially in zero gravity and topological surface states in superfluid 3He. He is currently conducting experiments on Bay 3 of the High B/T facility in collaboration with Yoon Lee to investigate the spin-degrees of freedom of surface Andreev bound states in the non-unitary A1 phase of superfluid 3He in high magnetic fields.


Viktor Tsepelin

Microkelvin visitor from April 15 - May 3, 2017

Personal Website

Host: Yoonseok Lee

Victor Tseplin is Reader in Physics at Lancaster University. He will give a colloquium on April 20, 2017 titled “TBpA“ and a special condensed matter physics seminar on “ TBA”. His research interest is mainly in understanding the nature of quantum turbulence in superfluid 4He and 3He at ultra low temperatures. His group is involved in developing a technique for visualization of vortices.


Brian P. Cowan
Microkelvin visitor from November 28 - December 1, 2016

Personal Website

Brian Cowan is Professor of Physics at Royal Holloway University of London and is a world expert on the use of NMR techniques and thermodynamic techniques to study quantum fluids and solids at very low temperatures. His current research includes topological superfluids under engineered nanofluidic confinement; and quantum phase transitions and quantum criticality in helium films. He is collaborating with the NHMFL High B/T facility on a review paper on the phase separation of sold 3He-4He mixtures.


Postdoctoral Appointees Years at Microkelvin Current Employment
Johan Bremer 1993-94 CERN
Vladimir Shvarts 2001-02 Janis Research
Hikota Akimoto 2000-03 Riken, Japan
C. L. Vicente 2004-07 University of Puerto Rico
Chao Huan 2007-09 NHMFL High B/T
Alessandro Serafin 2012-16 Amherst Center for Fundamental Interactions
Doctoral Students Graduation Year Dissertation Title
Wenhai Ni 1994 Melting pressure thermometry and magnetically order solid 3He
Paul Moyland 1997 Nuclear magnetism and negative temperatures in silver
Edgar Genio 1997 Low Temperature Nuclear Quadrupole Resonance Studies of Antimony and Application of Thermometry
Garrett E. Granroth 1998 Experimental Studies of Integer Spin Antiferromagnetic Chain
Brian C. Watson 2000 Quantum Transitions in Antiferromagnets and Liquid Helium-3
Tood Sherline 2006 Antiferromagnetism in Cesium Tetrabromocuprate (II) and Body-Centered-Cubic Solid Helium Three
Byoung Hee Moon 2010 Study on the effects of anisotropic disorder on superfluid 3He in high porosity aerogel using longitudinal ultrasound
SungSu Kim 2011 A study of nuclear spin relaxation in isotopic mixture of dilute 3He in solid 4He using NMR
Miguel Gonzalez 2012 Development and Application of MEMS Devices for the Study of Liquid 3He

Supported by: The National High Magnetic Field Lab | The National Science Foundation | The State of Florida | The University of Florida

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