Statut  Confirmé 
Série  LPENSBQ 
Domaines  condmat 
Date  Jeudi 6 Octobre 2022 
Heure  12:45 
Institut  LPENS 
Salle  L367 
Nom de l'orateur  Murthy 
Prenom de l'orateur  Chaitanya 
Addresse email de l'orateur  
Institution de l'orateur  Stanford 
Titre  A stability bound on the Tlinear resistivity of conventional metals 
Résumé  Abstract: Perturbative considerations account for the properties of conventional metals, including the range of temperatures T where the transport scattering rate is 1/tau_tr = 2 \pi \lambda T, where \lambda is a dimensionless strength of the electronphonon coupling. The fact that measured values satisfy \lambda <~ 1 has been noted in the context of a possible "Planckian" bound on transport. However, since the electronphonon scattering is quasielastic in this regime, no such Planckian considerations can be relevant. I will argue, based on Monte Carlo results on the Holstein model, that a different sort of bound is at play: a "stability" bound on \lambda consistent with metallic transport. I will then speculate that a qualitatively similar bound on the strength of residual interactions, which is often stronger than Planckian, may apply to metals more generally. 
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