Dresden 2020 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 59: Correlated Electrons: Quantum Impurities and Kondo Physics; Other Materials
TT 59.4: Talk
Thursday, March 19, 2020, 15:45–16:00, HSZ 03
Investigation of Yu-Shiba-Rusinov states of magnetic structures on the surface of β-Bi2Pd superconductor — •Stefano Trivini, Jon Ortuzar, Javier Zaldivar, and Nacho Pascual — CICnanoGUNE, San Sebastiàn, Spain
Magnetic atoms deposited on superconductors induce a pair breaking effect that reflects in intragap states known as Yu-Shiba-Rusinov (YSR) states.[1]
Through their interaction with the substrate, the atoms can be magnetically coupled between each other. This magnetic interaction is reflected in the YSR sub gap structure.[2]
While the effect of magnetic coupling of atoms in extended wires on their Kondo interaction[2] or spin excitation[2] has been previously addressed, the behavior on their YSR is still being investigated.
Here, we do atomic manipulation of magnetic adatoms on β-Bi2Pd by low temperature STM, building atomically perfect magnetic structures. The YSR states can be measured by means of STS with a β-Bi2Pd superconducting tip with 100 ueV energy resolution.