Stability of uniform electronic wavepackets in chains and fullerenes

摘要: In this paper, we investigate the influence of electron-lattice interaction on stability uniform electronic wavepackets chains as well several types fullerenes. We will use an effective nonlinear Schrodinger equation to mimic electron–phonon coupling in these topologies. By numerically solving dynamic for initially wavepacket, show that critical above which it becomes unstable continuously decreases with chain size. On other hand, strength saturates a finite value large fullerene buckyballs. also provide analytical arguments support findings based modulational instability analysis.