Regensburg 2019 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 35: Spintronics (joint session TT/DY/MA)

TT 35.4: Talk

Tuesday, April 2, 2019, 14:45–15:00, H23

Magnetism in atomic Gd contacts: Noise and transport measurements — •Marcel Strohmeier, Martin Prestel, and Elke Scheer — Department of Physics, University of Konstanz, 78457 Konstanz, Germany

Materials with partially filled f shells bear interesting electronic and magnetic properties, wich have been intensively studied in bulk. Yet, on the atomic scale they are still a widely unexplored topic. For gadolinium (Gd) first transport measurements and theoretical calculations on the influence of f electrons on the electronic transport have been carried out [1]. To get a deeper insight into the magnetic ordering at the atomic scale we use the mechanically controllable break junction (MCBJ) technique at low temperatures to produce tunable atomic-size contacts. Here we present first measurements on magnetic transport behavior as well as shot noise measurements. Shot noise is known to reveal the exact channel configuration [2] and is even sensitive to spin polarization [3].
Olivera et al., Phys. Rev. B 95, 075409 (2017)
Kumar et al., Phys. Rev. Lett. 108, 146602 (2012)
Burtzlaff et al., Phys. Rev. Lett. 114, 016602 (2015)