Theory of Strange Metals

Understanding "strange metal" phenomena - metallic behavior that deviates from that expected of an ordinary Fermi liquid down to the lowest measurable temperatures - is among the most puzzling open problems in condensed matter physics. Such phenomena are observed across many different strongly correlated materials. They seem tied to other interesting phenomena, such as quantum criticality and unconventional superconductivity.  I will describe theoretical advances in understanding the possible origins of such phenomena in specific systems, including ruthenates and overdoped cuprates. In particular, I will describe how a strange metal regime can emerge when an unconventional superconductor is suppressed either by a high magnetic field or by temperature.

Speaker: Erez Berg, Weizmann Institute of Science