2 papers
cond-mat.dis-nn2006
Conductivity of a quasiperiodic system in two and three dimensions
Daniel Braak
A generalization of the Aubry-Andre model in two and three dimensions is introduced which allows for quasiperiodic hopping terms in addition to the quasiperiodic site potentials. T…
cond-mat.str-el2005
Observation of a Griffiths phase in paramagnetic La1-xSrxMnO3
J. Deisenhofer, D. Braak, H. -A. Krug von Nidda +8
We report on the discovery of a novel triangular phase regime in the system La1-xSrxMnO3 by means of electron spin resonance and magnetic susceptibility measurements. This phase is…