Sven Friedemann
Assistant Professor
Department of Physics
University of Bristol
United Kingdom
Biography
He conducted his PhD research project at the Max-Planck Institute for Chemical Physics of Solids and obtained a Dr. rer. nat. from the Technical University Dresden, Germany with distinction in 2009. There, He performed high-resolution Hall effect measurements in crossed magnetic fields and established a Fermi surface reconstrution in the prototypical quantum critical material YbRh2Si2. From 2010 to 2013 He worked as a research fellow at the University of Cambridge first on a Feodor-Lynen fellowship of the Alexander von Humboldt foundation and later on a Marie Curie fellowship of the European Research Council.
Research Interest
His research focuses on tuning correlations in metals, insulators, and semiconductors with hydrostatic pressure. Using transport, thermodynamic, and magnetic measurements He aim to enhance our understanding of electronic behavior. One focus of his research is to map the evolution of the Fermi surface whilst tuning materials from one ground state into another, e.g. from an antiferromagnet into a paramagnet. Strong correlations have been observed in such cases to lead to novel states like unconventional superconductivity. Here, he utilize quantum oscillation measurements to unravel the underlying electronic structure changes which can provide important input to theories of unconventional superconductivity.
Publications
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Pfau, H, Hartmann, S, Stockert, U, Sun, P, Lausberg, S, Brando, M, Friedemann, S, Krellner, C, Geibel, C, Wirth, S, Kirchner, S, Abrahams, E, Si, Q & Steglich, F, 2012, ‘Thermal and electrical transport across a magnetic quantum critical point’. Nature, vol 484., pp. 493-497