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To order or not to order — Solving the Ground State of Geometrically Frustrated Magnets
October 19, 20184:00 pm – 5:00 pm (CDT)

To order or not to order — Solving the Ground State of Geometrically Frustrated Magnets

Speaker:

Sara Haravifard (Duke University)

Host:

Ar. Abanov

Location:

Address:

Mitchell Institute for Fundamental Physics & Astronomy

College Station, Texas 77843

Event Details

The interactions that define how spins arrange themselves in a material play a fundamental role in a wide variety of physical phenomena. Frustrated quantum magnets are systems for which the exchange interactions governing the interacting spins cannot be simultaneously satisfied, leading to a highly degenerate ground state and new states of matter such as quantum spin liquid. In this talk I will discuss how chemical doping, external pressure and application of magnetic field regulates the underlying electronic and magnetic interactions in these systems, ultimately driving the ground state across the phase diagram and leading to emergent quantum critical phenomena. For examples, I will present our recent magnetometry, thermal transport, xray and neutron scattering studies performed under extreme sample environments on 2D AFM triangular and Shastry-Sutherland systems, as well as on 3D breathing pyrochlore system.

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