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Charge Stripe in an Antiferromagnet: 1d Band of Composite Excitations
- Publication Year :
- 2001
- Publisher :
- arXiv, 2001.
-
Abstract
- With the help of analytical and numerical studies of the $t$-$J_z$ model we argue that the charge stripe in an antiferromagnetic insulator should be understood as a system of holon-spin-polaron excitations condensed at the self-induced antiphase domain wall. The structure of such a charge excitation is studied in detail with numerical and analytical results for various quantities being in a very close agreement. An analytical picture of these excitations occupying an effective 1D stripe band is also in a very good accord with numerical data. The emerging concept advocates the primary role of the kinetic energy in favoring the stripe as a ground state. A comparative analysis suggests the effect of pairing and collective meandering on the energetics of the stripe formation to be secondary.<br />Comment: 5 pages, 3 figures, proceedings of SCES'01 conference, Ann Arbor, 2001, to be published in Physica B
- Subjects :
- Physics
Condensed matter physics
Strongly Correlated Electrons (cond-mat.str-el)
Composite number
FOS: Physical sciences
Insulator (electricity)
Condensed Matter Physics
Kinetic energy
Electronic, Optical and Magnetic Materials
Condensed Matter - Strongly Correlated Electrons
Pairing
Antiferromagnetism
Condensed Matter::Strongly Correlated Electrons
Electrical and Electronic Engineering
Ground state
Excitation
Subjects
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....93e5a55cc9dc0c8946778e50ac67d43b
- Full Text :
- https://doi.org/10.48550/arxiv.cond-mat/0111474