3 research outputs found
Two-Dimensional Anharmonic Crystal Lattices: Solitons, Solectrons, and Electric Conduction
Reported here are salient features of soliton-mediated electron transport in
anharmonic crystal lattices.After recalling how an electron-soliton bound state
(solectron) can be formed we comment on consequences like electron surfing on a
sound wave and balistic transport, possible percolation in 2d lattices, and a
novel form of electron pairing with strongly correlated electrons both in real
space and momentum space.Comment: Conferenc
Charge coupling to anharmonic lattice excitations in a layered crystal at 800K
A study of charged particle and quasi-particle anharmonic lattice excitations
in a meta-stable crystal of layered structure at high temperature has shown
that a mobile lattice excitation called a quodon can bind securely to a hole or
electron. Quodons are decoupled from phonons and can propagate along atomic
chains of more than atoms at 800K. Their relevance to high Tc
superconductors is discussed.Comment: 3 pages, 1 figur
Quartic Lattice Interactions, Soliton-like Excitations and Electron Pairing in One-Dimensional Anharmonic Crystals
We show that two added, excess electrons with opposite spins in
one-dimensional crystal lattices with quartic anharmonicity may form a
bisolectron, which is a localized bound state of the paired electrons to a
soliton-like lattice deformation. It is also shown that when the Coulomb
repulsion is included, the wave function of the bisolectron has two maxima, and
such a state is stable in lattices with strong enough electron-(phonon/soliton)
lattice coupling. Furthermore the energy of the bisolectron is shown to be
lower than the energy of the state with two separate, independent electrons, as
even with account of the Coulomb repulsion the bisolectron binding energy is
positiv