Zobrazeno 1 - 10
of 336
pro vyhledávání: '"Römer, R. A."'
Publikováno v:
Carbon 127 (2018) 64-69
Non-equilibrium molecular dynamics is used to investigate the heat current due to the atomic lattice vibrations in graphene nanoribbons and nanorings under a thermal gradient. We consider a wide range of temperature, nanoribbon widths up to 6nm and t
Externí odkaz:
http://arxiv.org/abs/1711.01561
We propose an experimental setup to study collision-induced soliton amplification. In an optical fibre with anomalous dispersion ($\beta_2 < 0$), we replace a small region of the fibre with a normal dispersion fibre ($\beta_2 > 0$). We show that soli
Externí odkaz:
http://arxiv.org/abs/1710.07155
Publikováno v:
Phys. Rev. B 96, 045403 (2017)
We investigate the nonequilibrium transport properties of a silicene armchair nanoribbon with a random distribution of adsorbed atoms in apex positions. A ferromagnetic insulator grown below the nanoribbon splits spin-up and spin-down electron bands
Externí odkaz:
http://arxiv.org/abs/1707.02015
Publikováno v:
Phys. Rev. B 95, 195431 (2017)
We investigate the non-equilibrium transport properties of a disordered molecular nanowire. The nanowire is regarded as a quasi-one-dimensional organic crystal composed of self-assembled molecules. One orbital and a single random energy are assigned
Externí odkaz:
http://arxiv.org/abs/1612.07643
Publikováno v:
Biophys J. 108, 1739-1746 (2015)
Determining the folding core of a protein yields information about its folding process and dynamics. The experimental procedures for identifying the amino acids which make up the folding core include hydrogen-deuterium exchange and $\Phi$-value analy
Externí odkaz:
http://arxiv.org/abs/1407.4440
Autor:
Römer, R. A., Schreiber, M.
We study two interacting particles in a random potential chain by a transfer matrix method which allows a correct handling of the symmetry of the two- particle wave function, but introduces an artificial ¨bag¨ interaction. The dependence of the two
We use the density matrix renormalization group to study the quantum transitions that occur in the half-filled one-dimensional fermionic Hubbard model with onsite potential disorder. We find a transition from the gapped Mott phase with algebraic spin
We examine the localization properties of the 2D Anderson Hamiltonian with off-diagonal disorder. Investigating the behavior of the participation numbers of eigenstates as well as studying their multifractal properties, we find states in the center o
Autor:
Römer, R. A., Schreiber, M.
We study two interacting particles in a random potential chain by means of the transfer matrix method. The dependence of the two-particle localization length lampta_2 on disorder and interaction strength is investigated. Our results demonstrate that
We reinvestigate the validity of mapping the problem of two onsite interacting particles in a random potential onto an effective random matrix model. To this end we first study numerically how the non-interacting basis is coupled by the interaction.