Publications (81)
Time-resolved collapse and revival of the Kondo state near a quantum phase transition
Ch. Wetli, S. Pal, J. Kroha +5
One of the most successful paradigms of many-body physics is the concept of quasiparticles: excitations in strongly interacting matter behaving like weakly interacting particles in…
Evolution of the Kondo lattice and non-Fermi liquid excitations in a heavy-fermion metal
S. Seiro, L. Jiao, S. Kirchner +7
Strong electron correlations can give rise to extraordinary properties of metals with renormalized quasiparticles which are at the basis of Landau's Fermi liquid theory. Near a qua…
Break up of heavy fermions at an antiferromagnetic instability
S. Friedemann, S. Wirth, S. Kirchner +7
We present results of high-resolution, low-temperature measurements of the Hall coefficient, thermopower, and specific heat on stoichiometric YbRh2Si2. They support earlier conclus…
Avoided ferromagnetic quantum critical point in CeRuPO
E. Lengyel, M. E. Macovei, A. Jesche +3
CeRuPO is a rare example of a ferromagnetic (FM) Kondo-lattice system. External pressure suppresses the ordering temperature to zero at about GPa. Our ac-susceptibili…
Density of bulk trap states in organic semiconductor crystals: discrete levels induced by oxygen in rubrene
C. Krellner, S. Haas, C. Goldmann +3
The density of trap states in the bandgap of semiconducting organic single crystals has been measured quantitatively and with high energy resolution by means of the experimental me…
H - T phase diagram of YbCo2Si2 with H // [100]
L. Pedrero, M. Brando, C. Klingner +3
We report on the first high-resolution dc-magnetisation () measurements on a single crystal of \ycs. was measured down to 0.05 K and in fields up to 12 T, with the magnetic…