200 citations · 2.3k across the 54 of their papers we have counts for
8 papers · 1 filter
Tunneling of quantum rotobreathers
J. Dorignac, S. Flach
We analyze the quantum properties of a system consisting of two nonlinearly coupled pendula. This non-integrable system exhibits two different symmetries: a permutational symmetry…
Incommensurate dynamics of resonant breathers in Josephson junction ladders
M. V. Fistul, A. E. Miroshnichenko, S. Flach +2
We present theoretical and experimental studies of resonant localized resistive states in a Josephson junction ladder. These complex breather states are obtained by tuning the brea…
AC-driven quantum spins: resonant enhancement of transverse DC magnetization
S. Flach, A. E. Miroshnichenko, A. A. Ovchinnikov
We consider s=1/2 spins in the presence of a constant magnetic field in z-direction and an AC magnetic field in the x-z plane. A nonzero DC magnetization component in y direction i…
Broken symmetries and directed collective energy transport
S. Flach, Y. Zolotaryuk, A. E. Miroshnichenko +1
We study the appearance of directed energy current in homogeneous spatially extended systems coupled to a heat bath in the presence of an external ac field E(t). The systems are de…
Magnetic field induced control of breather dynamics in a single plaquette of Josephson junctions
M. V. Fistul, S. Flach, A. Benabdallah
We present a theoretical study of inhomogeneous dynamic (resistive) states in a single plaquette consisting of three Josephson junctions. Resonant interactions of such a breather s…
Breathers in a single plaquette of Josephson junctions: existence, stability and resonances
A. Benabdallah, M. V. Fistul, S. Flach
We present a theoretical study of inhomogeneous dynamic (resistive) states in a single plaquette consisting of three Josephson junctions. These breather states are found to exist i…