Holes as Dipoles in a Doped Antiferromagnet and Stripe Instabilities
| dc.creator | Kou, Su-Peng | |
| dc.creator | Weng, Zheng-Yu | |
| dc.date | 2002-12-06 | |
| dc.date | 2003-02-11 | |
| dc.date.accessioned | 2026-07-07T06:25:15Z | |
| dc.date.available | 2026-07-07T06:25:15Z | |
| dc.description | Based on an effective model of a doped antiferromagnetic Mott insulator, we show that a doped hole will induce a dipole-like spin configuration in a spin ordered phase at low doping. The kinetic energy of doped holes is severely frustrated and a hole-dipole object is actually localized or self-trapped in space. Without a balance from the kinetic energy, the long-range dipole-dipole interaction between doped holes will dominate the low-energy physics, leading to an inhomogeneity instability as hole-dipoles collapse into stripes. Both antiphase metallic stripes of quarter-filling and antiphase insulating stripes along a diagonal direction are discussed as composed of hole-dipoles as elementary building blocks. Stripe melting and competing phases are also discussed. | |
| dc.description | 11 pages, 5 figures, revised version with reference updates, to appear in Phys. Rev. B | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0212134 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0212134 | |
| dc.identifier | Phys. Rev. B67, 115103 (2003) | |
| dc.identifier | doi:10.1103/PhysRevB.67.115103 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/96786 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Holes as Dipoles in a Doped Antiferromagnet and Stripe Instabilities | |
| dc.type | text |