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Spectral function of a quarter-filled one-dimensional charge density wave insulator
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UNSPECIFIED. (2002) Spectral function of a quarter-filled one-dimensional charge density wave insulator. PHYSICAL REVIEW LETTERS, 88 (9). -. ISSN 0031-9007
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.88.096403
Abstract
We consider a one-dimensional charge density wave insulator formed by umklapp processes in a quarter-filled band. The spectrum of the model consists of gapless, uncharged excitations carrying spin +/-1/2 (spinons) and gapped, spinless excitations carrying charge +/-e/2 (solitons and antisolitons). We calculate the low-energy behavior of the single-electron Green's function at zero temperature. The spectral function exhibits a featureless scattering continuum of two solitons and many spinons. The theory predicts that the gap observed by angle resolved photoemission is twice the activation gap in the dc conductivity. We comment on possible applications to PrBa2Cu3O7 and to the Bechgaard salts.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||
| Journal or Publication Title: | PHYSICAL REVIEW LETTERS | ||||
| Publisher: | AMERICAN PHYSICAL SOC | ||||
| ISSN: | 0031-9007 | ||||
| Official Date: | 4 March 2002 | ||||
| Dates: |
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| Volume: | 88 | ||||
| Number: | 9 | ||||
| Number of Pages: | 4 | ||||
| Page Range: | - | ||||
| Identification Number: | 10.1103/PhysRevLett.88.096403 | ||||
| Publication Status: | Published | ||||
| URI: | http://wrap.warwick.ac.uk/id/eprint/11186 |
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