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Scale-invariant transport in high-temperature superconductors
February 23, 20184:00 pm – 5:00 pm (CDT)

Scale-invariant transport in high-temperature superconductors


Arkady Shekhter (National High Magnetic Field Laboratory)


A. Finkel'stein



Mitchell Institute for Fundamental Physics & Astronomy

College Station, Texas 77843

Event Details

Although multiple measurements indicate quantum critical origin of the phase diagram of high-temperature superconductors, the physics of the anomalous transport behavior in the "strange metal" state near critical doping and the very nature of its charge carriers are still in flux. Our high-magnetic-filed measurements of resistivity in LSCO cuprates near critical doping (x=0.20) reveal linear-in-field resistivity observed at very high magnetic fields and a characteristic temperature-field competition at lower fields. Such scale-invariant behavior of magnetoresistance suggests non-quasiparticle transport in the strange metal state. Hall measurements in the same field and temperature range further support this conclusion.

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