Research Goals
To discover and understand novel physical phenomena in condensed matter systems by utilizing measurements of thermal and transport properties, as well as soft point-contact spectroscopy, under a variety of extreme conditions—including high magnetic fields, high pressures, and ultra-low temperatures.
Research Interests
Pairing Mechanisms of Unconventional Superconductivity
Investigation of topological and heavy-fermion superconductors, with a particular focus on the superconducting gap structure near quantum critical points (QCPs).
Quantum Spin Liquids (QSLs) and Frustrated Magnetism
Exploration of exotic magnetic states in geometrically frustrated systems and development of novel experimental approaches to detect and characterize QSLs and their potential applications.
Quantum Materials
Study of heavy fermion compounds (HF), transition metal dichalcogenides (TMDCs), quantum spin liquid candidates (QSLs), and high-temperature superconductors (HTSCs).
Experimental Techniques and Instrumentation
Development and application of low-temperature experimental tools—including thermal, transport, and point-contact spectroscopy—to probe emergent physical phenomena under extreme conditions (high magnetic fields, high pressures, and ultra-low temperatures).
Technological interests
Transport and Thermodynamic Measurements:
Electrical resistivity and Hall effect
Thermal conductivity in rotating magnetic fields
Specific heat as a function of temperature and magnetic field
Magneto-caloric effect
Soft-point contact spectroscopy and data analysis
High-Pressure Experiments (up to ~10 GPa):
Cylinder piston-type pressure cell
Indenter-type pressure cell
Low-Temperature and High Magnetic Field Techniques:
Measurements down to ~1 mK and up to 16 T
Systems: PPMS, Oxford Heliox, Kelvinox, and custom-built ³He and ³He/⁴He dilution refrigerators
Magnets: Oxford Instruments and American Superconductor DC magnets
High Pulsed Magnetic Field Experiments:
Up to 80 T with ultra-fast sweeping rates (~10,000 T/s)
Recent Publication, 4 June, 2025
Anisotropic field-induced changes in the superconducting order parameter of UTe2
Magnetic-field-dependent heat capacity measurements are carried out on an ultrapure sample of the UTe2 superconductor along different crystallographic directions. By analyzing the resulting field-dependent residual Sommerfeld coefficients, a case is made that 𝐵2𝑢 is the primary superconducting order parameter in UTe2.
Phys. Rev. Research 7, L022053 (2025).