Principal Investigator
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bradramshaw@cornell.edu
531 Clark Hall
Research Area:We use high magnetic fields and low temperatures to explore superconductors, correlated metals, spin liquids, and topological semimetals. High fields are a versatile and `clean’ tuning parameter that can be used to probe the electronic structure of materials, suppress or enhance competing orders such as superconductivity, or induce phase transitions to new states of matter. We have in-house capabilities up to 20 tesla steady-state and 35 tesla pulsed-field, and we use fields up to 100 Tesla available at user facilities around the world. Below are just a few examples of the projects we are working on, and the techniques we currently use and are developing.
Postdocs
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gael.grissonnanche@cornell.edu
Research Area:Gael is developing meso-scale thermal transport using focused ion beam lithography, with the aim of investigating spin liquids, electron hydrodynamics, and Planckian physics in correlated metals.
Graduate Students
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yf257@cornell.edu
Research Area:Transport measurements on Weyl semimetals, pseudogap Fermi surface of high-Tc cuprates, surface acoustic wave measurements on van der Waals heterostructures.
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sg2235@cornell.edu
H11 Clark Hall
Research Area:Resonant ultrasound spectroscopy on topological superconductors and heavy fermions; nematic strain susceptibility measurements in Sr2RuO4.
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pmh74@cornell.edu
Research Area:Pulse echo ultrasound measurements of symmetry breaking in CeRhIn5, chiral anomaly in GdPtBi and TaAs, nematic quantum criticality in TmVO4.
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ags276@cornell.edu
Research Area:Ultrasonic interferrometry
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ft226@cornell.edu
Research Area:Electron hydrodynamics probed with resonant ultrasound spectroscopy, ultrasound signatures of the chiral anomaly in Weyl semimetals, ultrasound measurements of spin liquid excitations.
Undergraduate Students
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Research Area:Resonant ultrasound spectroscopy and pulse-echo simulations.
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Research Area:Pulsed fields.
