332 citations · 1.7k across the 60 of their papers we have counts for
10 papers · 1 filter
Direct evidence of spatial stability of Bose-Einstein condensate of magnons
I. V. Borisenko, B. Divinskiy, V. E. Demidov +4
Bose-Einstein condensation of quasi-equilibrium magnons is one of few macroscopic quantum phenomena observed at room temperature. Since its discovery, it became an object of intens…
Topological defects in helical magnets
T. Nattermann, V. L. Pokrovsky
Helical magnets which violated space inversion symmetry have rather peculiar topological defects. In isotropic helical magnets with exchange and Dzyaloshinskii-Moriya interactions…
Long-wave magnons in a ferromagnetic film
Gang Li, Chen Sun, Thomas Nattermann +1
An asymptotically exact theory of spectrum and transverse distribution of magnetization in long-wave magnons is presented. It is based on exact analytical solution of linearized La…
Vortex Wall Dynamics and Pinning in Helical Magnets
Bahman Roostaei
Domain walls formed by one dimensional array of vortex lines have been recently predicted to exist in disordered helical magnets and multiferroics. These systems are on one hand an…
Pinning theory of domain walls in helical magnets
Bahman Roostaei, Thomas Nattermann
The theory of elasticity and pinning of domain walls in helical magnets is presented. Domain walls perpendicular to the helical axis show non-local elasticity and are marginally pi…
Transport in Luttinger Liquids with Strong Impurities
S. Malinin, T. Nattermann
The tunnel current of a Luttinger liquid with a finite density of strong impurities is calculated using an instanton approach. For very low temperatures or electric fields …
Transport in a Dissipative Luttinger Liquid
Zoran Ristivojevic, Thomas Nattermann
We study theoretically the transport through a single impurity in a one-channel Luttinger liquid coupled to a dissipative (ohmic) bath . For non-zero dissipation the weak link…
Frequency-Temperature Crossover in the Conductivity of Disordered Luttinger Liquids
Bernd Rosenow, Andreas Glatz, Thomas Nattermann
The temperature () and frequency () dependent conductivity of weakly disordered Luttinger liquids is calculated in a systematic way both by perturbation theory and from a fin…
Coulomb blockade and transport in a chain of one-dimensional quantum dots
M. M. Fogler, S. V. Malinin, T. Nattermann
A long one-dimensional wire with a finite density of strong random impurities is modelled as a chain of weakly coupled quantum dots. At low temperature T and applied voltage V its…
Nonlinear ac conductivity of interacting 1d electron systems
Bernd Rosenow, Thomas Nattermann
We consider low energy charge transport in one-dimensional (1d) electron systems with short range interactions under the influence of a random potential. Combining RG and instanton…