University of Waterloo
200 University Avenue West
Waterloo, Ontario, Canada N2L 3G1
Phone: (519) 888-4567 ext 32215
Fax: (519) 746-8115
Department of Physics,
University of Maryland
Dr. Johnpierre Paglione directs a research group in the Center for Nanophysics and Advanced Materials at the University of Maryland. His team has contributed to several fields of condensed matter research through both single-crystal synthesis of superconducting, quantum-critical and topological materials, as well as exploration of novel phenomena. He is a leader in the field of quantum criticality and has made important contributions to the fields of heavy-fermion materials and the quasiparticle picture of correlated materials. Dr. Paglione has more recently pursued several new areas of research including iron-based high-temperature superconductivity and topological insulators and superconductors.
In all known fermionic superfluids, Cooper pairs are composed of spin-1/2 quasi-particles that pair to form either spin-singlet or spin-triplet bound states. The "spin" of a Bloch electron, however, is fixed by the symmetries of the crystal and the atomic orbitals from which it is derived, and in some cases can behave as if it were a spin-3/2 particle. The superconducting state of such a system allows pairing states to form "beyond triplet", with higher spin quasi-particles combining to form quintet or even septet pairs. After reviewing our research program on quantum materials, I will focus on our evidence for the first experimentally realized case of a high-spin fermionic superfluid in the exotic superconducting state of the half-Heusler compound YPtBi, as well as the rich landscape of ground states and intertwining orders found in the X-Y-Z family of materials.
All are welcome to attend. Please join us at 3:30pm in PHY 151 for light refreshments.
The University of Waterloo acknowledges that much of our work takes place on the traditional territory of the Neutral, Anishinaabeg and Haudenosaunee peoples. Our main campus is situated on the Haldimand Tract, the land granted to the Six Nations that includes six miles on each side of the Grand River. Our active work toward reconciliation takes place across our campuses through research, learning, teaching, and community building, and is centralized within our Indigenous Initiatives Office.