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Our lab designs and builds unique experiments to probe the fundamental transport and thermodynamic properties of quantum materials—systems that exhibit non-trivial quantum phenomena. Current examples of our research include the identification of unique phases of matter in topological semimetals, uncovering broken symmetries in high-Tc superconductors using ultrasound, and probing topological superconductivity using the unique experimental technique of resonant ultrasound spectroscopy.
- Laboratory of Atomic and Solid State Physics (LASSP)
 B. J. Ramshaw, K.A. Modic, Arkady Shekter, Yi Zhang, Eun-Ah Kim, Philip J. W. Moll, M.K. Chan, J.B. Betts, F. Balakirev, A. Migliori, N.J. Ghimire, E.D. Bauer, F. Ronning, and R.D. McDonald. Quantum limit transport and destruction of the Weyl nodes in TaAs. Nature Communications, 9, June 2018.
 B. J. Ramshaw, N Harrison, SE Sebastian, S Ghannadzadeh, KA Modic, DA Bonn, WN Hardy, Ruixing Liang, and PA Goddard. Broken Rotational Symmetry on the Fermi Surface of a High-Tc Superconductor. NPJ Quantum Materials, 2, 2017
 B. J. Ramshaw, S. E. Sebastian, R. D. McDonald, James Day, B. S. Tan, Z. Zhu, J. B. Betts, Ruixing Liang, D. A. Bonn, W. N. Hardy, and N. Harrison. Quasiparticle Mass Enhancement Approaching Optimal Doping in a High-Tc Superconductor. Science, 348:317–320, 2015
 B. J. Ramshaw, Arkady Shekhter, Ross D. McDonald, Jon B. Betts, J. N. Mitchell, P. H. Tobash, C. H. Mielke, E. D. Bauer, and Albert Migliori. Avoided Valence Transition in a Plutonium Superconductor. Proceedings of the National Academy of Sciences, 112(11):3285–3289, 2015
 Philip JW Moll, Andrew C Potter, Nityan L Nair, B. J. Ramshaw, KA Modic, Scott Riggs, Bin Zeng, Nirmal J Ghimire, Eric D Bauer, Robert Kealhofer, Filip Ronning, and James G. Analytis. Magnetic Torque Anomaly in the Quantum Limit of Weyl Semimetals. Nature Communications, 7, 2016
 Akash V. Maharaj, Yi Zhang, B. J. Ramshaw, and S. A. Kivelson. Quantum Oscillations in a Bilayer With Broken Mirror Symmetry: A Minimal Model for YBa2Cu3O6+x. Phys. Rev. B, 93:094503, Mar 2016
 A. Shekhter, B. J. Ramshaw, R. D. McDonald, J. B. Betts, F. Balakirev, Ruixing Liang,W. N. Hardy, D. A. Bonn, Scott C. Riggs, and Albert Migliori. Bounding the Pseudogap With a Line of Phase Transitions in YBa2Cu3O6+x. Nature, 498(7452):75–77, 2013
 B. J. Ramshaw, Baptiste Vignolle, James Day, Ruixing Liang, W. N. Hardy, Cyril Proust, and D. A. Bonn. Angle Dependence of Quantum Oscillations in YBa2Cu3O6.59 Shows Free-Spin Behaviour of Quasiparticles. Nature Physics, 7(3):234–238, Mar 2011