SKM 2021 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 9: Poster Session: Correlated Electrons
TT 9.27: Poster
Dienstag, 28. September 2021, 13:30–16:00, P
Anisotropic metamagnetism in trilayer ruthenate Sr4Ru3O10 — •Izidor Benedičič1, Masahiro Naritsuka1, Luke C. Rhodes1, Rosalba Fittipaldi2, Veronica Granata3, Christopher Trainer1, Antonio Vecchione2, and Peter Wahl1 — 1School of Physics and Astronomy, University of St Andrews, North Haugh. St Andrews, Fife KY16 9SS, United Kingdom — 2CNR-SPIN, UOS Salerno, Via Giovanni Paolo II 132, I-84084, Fisciano, Italy — 3Dipartimento di Fisica "E.R.Caianiello", Universita di Salerno, I-84084 Fisciano, Salerno,Italy
The ground state of metamagnetic materials can be precisely controlled by application of magnetic field, making them exciting candidates for spintronic applications. In itinerant metamagnets, such as trilayer ruthenate Sr4Ru3O10, understanding their electronic structure is crucial for successful manipulation and tuning of their magnetic properties. I will show measurements using quasiparticle interference imaging in a low temperature scanning tunneling microscope to study the electronic structure of Sr4Ru3O10 in magnetic field. We find a strongly anisotropic response to the in-plane field, suggesting an unusually strong effect of the orthorhombic distortion on the electronic structure. Using DFT calculations, we can model the QPI signal and find the Fermi surface dominated by bands of spin-minority character, putting constraints on theories for the origin of the metamagnetic transition.