Microscopic origin of the `strange' metal
ORAL
Abstract
We study a disordered Anderson-Hubbard lattice model of strongly interacting fermions. We obtain the space and time dependent electron Green’s function by numerically summing the `melon’ diagrams. We show the emergence of two ``fluids'': (i) a fraction of sites, with weaker hopping than the background, hybridize with a constellation of neighboring sites and nucleate islands, and behave similar to the Sachdev-Ye-Kitaev model; (ii) the remaining background electrons scatter off SYK islands, and display strange metal transport with a linear-in-temperature resistivity, and singular spectral widths down to zero temperature with no coherence scale.
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Presenters
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Kyungmin Lee
Physics, The Ohio State University, Natl High Magnetic Field Lab
Authors
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Kyungmin Lee
Physics, The Ohio State University, Natl High Magnetic Field Lab
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Aavishkar Patel
Physics, University of California, Berkeley, University of California, Berkeley, Physics, Berkeley
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Nandini Trivedi
Department of Physics, Ohio State Univ - Columbus, Physics, The Ohio State University, The Ohio State University, Ohio State Univ Columbus, Ohio State University, Ohio State Univ - Columbus, Physics, Ohio State University
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Subir Sachdev
Physics, Harvard University, Harvard University, Department of Physics, Harvard University