Open AccessTHE FORMATION AND PROPAGATION OF DOMAINS IN SUPERLATTICES DISCUSSED WITH NONLINEAR SCHR¨ODINGER EQUATION
Author(s) -
Qiang Tian,
Bin Ma
Publication year - 1999
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.48.2125
Subject(s) - nonlinear schrödinger equation , superlattice , physics , nonlinear system , soliton , breather , schrödinger equation , domain (mathematical analysis) , electron , condensed matter physics , differential equation , split step method , mathematical physics , quantum mechanics , mathematical analysis , mathematics
The formation and propagation of domains in superlattices are discussed using a nonlinear Schrdinger equation.Negative differential conductivity in superlattices leads to the growth of inevitable spatial fluctuations,and a propagating electron accumulation-layer domain is formed.It is shown that envelopes of the wave functions are governed by the nonlinear Schrdinger equation which has soliton solutions.