Phonons and solitons in one-dimensional Mott insulators

被引：0
|
作者：
Chang, CM [1 ]
Neto, AHC
Bishop, AR
机构：
[1] Univ Calif Riverside, Dept Phys, Riverside, CA 92521 USA
[2] Boston Univ, Dept Phys, Boston, MA 02215 USA
[3] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA
[4] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA
来源：
PHYSICAL REVIEW B | 2001年 / 64卷 / 11期
关键词：
D O I：
10.1103/PhysRevB.64.113406
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We study the problem of one-dimensional Luttinger liquids in the insulating Mott-Hubbard phase in the presence of acoustic phonons in the semiclassical limit. We show that solitonic excitations can propagate freely in the system and the energy required to produce a soliton is reduced by a polaronic effect. We find a critical value of the electron-phonon coupling constant for which this energy vanishes.
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页数：3
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