Berlin 2015 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 98: Focus Session: Visualization of Heavy Fermion Formation through Scanning Tunneling Microscopy
TT 98.1: Invited Talk
Thursday, March 19, 2015, 15:00–15:30, H 0104
Scanning Tunneling Spectroscopy: a New Tool for Probing Heavy Fermion Materials — •Piers Coleman — Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, NJ 08854, USA — Department of Physics, Royal Holloway, University of London, Egham, Surrey TW20 0EX, UK
Over the past twenty years, the use of Scanning Tunneling Microscopy (STM) has emerged as a powerful tool for imaging the position dependent electronic excitation spectrum of correlated electron materials. More recently, this tool has been applied with great success to heavy electron metals, superconductors and Kondo insulators. Unlike one band materials, such as cuprate superconductors, STM into heavy fermion systems usually involves an interference between tunneling into the conduction d-band and the almost localized f-states, leading to Fano line-shape interference. I shall review the progress in this field, giving particular discussion of the insights gained into the hidden order in URu2Si2, the superconductivity in CeCoIn5 and the topological Kondo insulator, SmB6.