SKM 2023 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 4: f-Electron Systems and Heavy Fermions I

TT 4.3: Vortrag

Montag, 27. März 2023, 10:00–10:15, HSZ 201

Uniaxial strain tuning the signature of Kondo effect in the electrical resistance of heavy-fermion metals — •Soumendra Panja, Anton Jesche, Bin Shen, and Philipp Gegenwart — Experimental Physics VI, Center for Electronic Correlations and Magnetism, University of Augsburg, 86159 Augsburg, Germany

Physical properties of Kondo lattices are determined by the interplay of the Kondo effect and the RKKY interaction, which both depend sensitively on the antiferromagnetic exchange J between f- and conduction electrons. This competition is extremely sensitive to pressure, as evidenced by very large Gruneisen parameters found in these materials. We intend to tune the Kondo-maximum signature in the electrical resistance of such materials with tensile and compressive strain by utilizing a commercial piezo-strain device. In this talk, first results will be discussed under experimentally accessible strains.