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University of Cambridge > Talks.cam > Theory of Condensed Matter > A gapless 1D spin liquid as a critical point between fragile Kondo insulators
A gapless 1D spin liquid as a critical point between fragile Kondo insulatorsAdd to your list(s) Download to your calendar using vCal
If you have a question about this talk, please contact Gaurav. Kondo insulators acquire their incompressible character via a spin exchange coupling between itinerant charge carriers and local moments. Motivated by recent advances in tunable 2D materials, I will focus on a class of Kondo insulator models where both the bandwidth and the quantum geometry of the itinerant electrons can be tuned. I will then argue that already in the simplest such model interesting physics arises. In particular, I will present evidence that in a 1D model tuning the kinetic energy of the itinerant electrons drives a second order phase transition where the critical fluctuations are carried by the spin degrees of freedom. Moreover, the transition falls outside the usual Landau paradigm for symmetry-breaking transitions, and has connections to generalized Lieb-Schultz-Mattis obstructions. This talk is part of the Theory of Condensed Matter series. This talk is included in these lists:
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