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Regensburg 2007 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 2: Quantum-Critical Phenomena

Montag, 26. März 2007, 09:30–12:45, H19

09:30 TT 2.1 The ’via cuprata’ from antiferromagnetic to ferromagnetic Heisenberg chains and Li2ZrCuO4 as a missing link near the quantum critical point — •S.-L. Drechsler, J. Richter, J. Malek, M. Schmitt, H. Rosner, N. Tristan, O. Volkova, A. Vasiliev, and B. Buechner
09:45 TT 2.2 Thermoelectric transport in the vicinity of a superconductor-metal quantum phase transition in nanowires — •Bernd Rosenow, Adrian Del Maestro, and Subir Sachdev
10:00 TT 2.3 Low-temperature magnetic properties of novel spin-dimer systems synthesized by bridging Cu(II) ions with modified hydroquinone ligands — •Y Tsui, U Tutsch, A Brühl, K Remović-Langer, V Pashchenko, B Wolf, M Lang, T Kretz, H-W Lerner, M Wagner, A Salguero, B Rahaman, T Saha-Dasgupta, and R Valentí
10:15 TT 2.4 Anomalous thermodynamics of spin-gap systems close to quantum phase transitions — •T. Lorenz, S. Stark, O. Heyer, H. Tanaka, and K. Krämer
10:30 TT 2.5 High pressure quantum phase transition in the weakly coupled spin cluster system Cu2Te2O5Br2 — •Hans-Henning Klauss, Christopher Mennerich, Hemke Maeter, Hannes Kühne, Peter Lemmens, Jochen Litterst, Hubertus Luetkens, Alex Amato, Rie Takagi, and Mats Johnsson
10:45 TT 2.6 Quantum phase transitions and dimensional reduction in antiferromagnets with inter-layer frustration — •Oliver Rösch, Inga Fischer, and Matthias Vojta
  11:00 15 min. break
11:15 TT 2.7 Interplay between chiral symmetry breaking and spinon confinement in Mott insulators — •Flavio Nogueira and Hagen Kleinert
11:30 TT 2.8 Spontaneous Fermi surface symmetry breaking in Sr3Ru2O7 — •Hiroyuki Yamase and Andrey Katanin
11:45 TT 2.9 Logarithmic Fermi-liquid breakdown in Nb1.02Fe1.98 — •Manuel Brando, Dennis Moroni-Klementowicz, Carsten Albrecht, William Duncan, Daniel Gruener, Guido Kreiner, Rafik Ballou, Bjorn Fak, and Malte Grosche
12:00 TT 2.10 High-temperature echo of the quantum phase transition in CeCu6−xAux — •M. Klein, A. Nuber, H. v. Löhneysen, and F. Reinert
12:15 TT 2.11 Multiple energy scales at a quantum critical point — •P. Gegenwart, T. Westerkamp, C. Krellner, Y. Tokiwa, S. Paschen, C. Geibel, F. Steglich, E. Abrahams, and Q. Si
12:30 TT 2.12 Electric transport at the quantum critical point in YbRh2Si2 — •Sven Friedemann, Niels Oeschler, Cornelius Krellner, Christoph Geibel, Silke Paschen, and Frank Steglich
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DPG-Physik > DPG-Verhandlungen > 2007 > Regensburg