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Berlin 2008 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 19: Correlated Electrons: Quantum-Critical Phenomena

Dienstag, 26. Februar 2008, 14:00–18:30, H 3010

14:00 TT 19.1 Non-Fermi liquid metal without quantum criticality — •Christian Pfleiderer, Peter Böni, Thomas Keller, Ulrich Rößler, and Achim Rosch
14:15 TT 19.2 Universal ratios of the phase diagram of Pomeranchuk instability: application to Sr3Ru2O7 — •hiroyuki yamase
14:30 TT 19.3 Instability of the Quantum-Critical Point of a 2D Weakly Ferromagnetic Fermi Liquid. — •Dmitri Efremov, Joseph Betouras, and Andrey Chubukov
14:45 TT 19.4 Low Temperature Investigations of YbRh2Si2 doped with Ir and Co — •Tanja Westerkamp, Philipp Gegenwart, Cornelius Krellner, Christoph Geibel, and Frank Steglich
15:00 TT 19.5 Anomalous critical behavior at the antiferromagnetic phase transition of YbRh2Si2 — •Cornelius Krellner, Stefanie Hartmann, Adam Pikul, Niels Oeschler, Christoph Geibel, Jochen Wosnitza, and Frank Steglich
  15:15 15 min. break
15:30 TT 19.6 Magnetization study of stoichiometric and slightly Ir- Co-doped YbRh2Si2 — •Manuel Brando, Luis Pedrero, Cornelius Krellner, Philipp Gegenwart, Christoph Geibel, and Frank Steglich
15:45 TT 19.7 Thermopower investigations of YbRh2Si2 in the vicinity of an antiferromagnetic quantum critical point — •Stefanie Hartmann, Niels Oeschler, Cornelius Krellner, Christoph Geibel, and Frank Steglich
16:00 TT 19.8 Low temperature electric transport of Yb(MxRh1−x)2Si2 M=Co,Ir — •Sven Friedemann, Niels Oeschler, Cornelius Krellner, Christoph Geibel, and Frank Steglich
16:15 TT 19.9 Thermal expansion and magnetostriction measurements on a CeCu5.85Au0.15 single crystal — •Stefanie Drobnik, Kai Grube, Roland Schäfer, Frédéric Hardy, Christoph Meingast, Oliver Stockert, and Hilbert von Löhneysen
16:30 TT 19.10 Breakdown of a valence bond solid in a Heisenberg model with four-spin interaction on honeycomb layers — •Thomas C. Lang, Anders W. Sandvik, and Fakher F. Assaad
  16:45 15 min. break
17:00 TT 19.11 Quantum Critical Spin Dynamics of a Cu(II) S=1/2 antiferromagnetic Heisenberg chain studied by 13C-NMR spectroscopy — •H. Kühne, H.-H. Klauss, J. Litterst, S. Grossjohann, W. Brenig, A.P. Reyes, P.L. Kuhns, C.P. Landee, M.M. Turnbull, H.-J. Grafe, B. Büchner, and J. Haase
17:15 TT 19.12 Quantum Critical Dynamics of the S=1/2 AFM Heisenberg Chain in Finite Magnetic Fields: a QMC Study — •Simon Grossjohann, Wolfram Brenig, Hannes Kühne, and Hans-Henning Klauss
17:30 TT 19.13 Dynamical Scaling Properties of a Doped Quantum Heisenberg Antiferromagnet in Two Dimensions — •Marcello Silva Neto, Juergen Falb, and Alejandro Muramatsu
17:45 TT 19.14 Critical Properties of an Effective Field Theory for 2D Doped Antiferromagnets — •Juergen Falb, Marcello Silva Neto, and Alejandro Muramatsu
18:00 TT 19.15 Probing field-induced quantum criticality in molecule-based low-dimensional spin systems — •Bernd Wolf, Yeekin Tsui, Ulrich Tutsch, Katarina Removic-Langer, Andrej Prokofiev, Wolf Aßmus, Roser Valenti, Stefan Wessel, Andreas Honecker, Matthias Wagner, and Michael Lang
18:15 TT 19.16 Quantum critical scaling behavior of deconfined spinons — •Flavio Nogueira, Steinar Kragset, and Asle Sudbo
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DPG-Physik > DPG-Verhandlungen > 2008 > Berlin