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URL:/institute-for-quantum-computing/events/quantum-mat
 ters-seminar-series-strange-metals-not-so-strange
SUMMARY:Quantum Matters Seminar Series: Strange metals from not-so-strange\
 nquasiparticles
CLASS:PUBLIC
DESCRIPTION:Summary \n\nBRAD RAMSHAW\n\nAbstract: Strange metals have line
 ar-in-temperature (T-linear) down\nto low temperature. Strange metals are 
 found in many families of\ncorrelated electron materials\, leading to the 
 conjecture that a\nuniversal bound - the \"Planckian\" bound - limits the 
 scattering rate\nof electrons to a value set by fundamental constants. If 
 the Planckian\nbound exists\, it would provide a natural explanation for w
 hy a host of\nseemingly disparate systems\, including high-temperature\nsu
 perconductors and twisted bilayer graphene\, all have T-linear\nresistivit
 y. Perhaps more dramatically\, T-linear resistivity suggests\nthat electro
 n-electron interactions are so strong that conventional\nconcepts such as 
 quasiparticles and Boltzmann transport do not apply\nin strange metals. I 
 will present our work on the cuprate Nd-LSCO and\nthe 5-layer superconduct
 ing nickelate that shows that conventional\nquasiparticle transport is ali
 ve and well\, even in the strange metal\nregime where the Planckian bound 
 is saturated. This suggests that we\nmay not need to abandon the quasipart
 icle picture entirely\, but that\nwe need to better understand the source 
 of scattering in these\nmaterials. \n 
DTSTAMP:20250520T143705Z
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