Anomalous Microwave Surface Resistance of CeCu6

Autor:	Kai Grube, Oliver Stockert, Martin Dressel, Daniel Hafner, Marc Scheffler, Hilbert von Löhneysen
Jazyk:	angličtina
Rok vydání:	2013
Předmět:	Superconductivity Materials science Strongly Correlated Electrons (cond-mat.str-el) Condensed matter physics FOS: Physical sciences Power law Metal Resonator Condensed Matter - Strongly Correlated Electrons visual_art Exponent visual_art.visual_art_medium Skin effect Sheet resistance Stripline
Popis:	We present surface resistance measurements of the archetypical heavy-fermion compound CeCu6 for frequencies between 3.7 and 18 GHz and temperatures from 1.2 to 6 K. The measurements were performed with superconducting stripline resonators that allow simultaneous measurements at multiple frequencies. The surface resistance of CeCu6 exhibits a pronounced decrease below 3 K, in consistence with dc resistivity. The low-temperature frequency dependence of the surface resistance follows a power law with exponent 2/3. While for conventional metals this would be consistent with the anomalous skin effect, we discuss the present situation of a heavy-fermion metal, where this frequency dependence might instead stem from the influence of electronic correlations. 6 pages, 3 figures, proceedings of SCES 2013
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c14d68928bbb316c56cbd25f8d7c9ee http://arxiv.org/abs/1311.5433 Zobrazit plný text záznamu