SKM 2023 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 57: Poster: Superconductivity I
TT 57.4: Poster
Donnerstag, 30. März 2023, 15:00–18:00, P2/OG2
Strain device for in-situ uniaxial strain measurements of strongly correlated electron materials in scanning tunneling microscopy — •Carolina A. Marques1, Danyang Liu1, Alexander Steppke1,2, and Fabian D. Natterer1 — 1University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland — 2Paul Scherrer Institut Forschungsstrasse 111 5232 Villigen PSI Switzerland
Uniaxial strain is an effective way to tune the properties of strongly correlated electron systems without introducing disorder. One seminal example is the doubling of the critical temperature of Sr2RuO4.
Strain devices for the in-situ application of strain have been used in several different measurement techniques: transport, specific heat, angle-resolved photoemission spectroscopy, muon spin relaxation, and neutron scattering measurements. Here, we describe the design and construction of a strain device compatible with a scanning tunneling microscope. Our piezo-element based strain-cell is temperature compensated and enables the continuous tuning of strain, allowing to monitor local strain response. It opens up the possibility to locally track changes to the low-energy electronic states as a function of strain, giving insight into the underlying physical mechanisms.