|Category||Condensed Matter and Materials Physics|
|Event Duration||2022-05-30 - 2022-05-31|
|Conference Name||The 2022 NCTS-MPICPFS international workshop on strange metal|
Metallic behavior that goes against the Landau’s Fermi liquid paradigm for ordinary metals has commonly been observed in a wide variety of strongly interacting quantum materials and yet the emergence of such metals is poorly understood. This unconventional metallic or non-Fermi liquid behavior often exists near a magnetic quantum phase transition, and shows “strange metal” phenomena with (quasi-)linear-in-temperature resistivity and singular logarithmic-in-temperature or power-law-in-temperature specific heat coefficient. Recently, even more enigmatic strange metal behaviors have been found in rare-earth intermetallic compounds pointing towards a stable strange metal ground state (phase). Moreover, a particularly intriguing class of strange metal states, so-called “Planckian metal”, showing perfect linear-in-temperature resistivity associated with universal scattering rate: 1/t = a kbT/ (h/2p) with a~1, has been observed in the normal state of a variety of strongly correlated superconductors where various competing states are present. Similar but somewhat different puzzles have been found in the “bad metal” region in poor conductors where metallic-like behavior persists well above the Mott-Ioffe-Regel limit. Many fundamental questions arise: Are strange metal and bad metal behaviors somewhat related or totally unrelated phenomena? What are the different mechanism for the “Planckian bound” in electron scattering time in ordinary and correlated metals? What is the link between strange metal state/Planckain scattering and quantum criticality? What are the implications of the Planckian bound on dissipation?
|Sign Up Duration||2022-04-25 - 2022-05-31|
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