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26 April 2024 |
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Article overview
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Momentum-Resolved Charge Excitations in a Prototype One Dimensional Mott Insulator | | M.Z. Hasan
; P.A. Montano
; E.D. Isaacs
; Z-X. Shen
; H. Eisaki
; S.K. Sinha
; Z. Islam
; N. Motoyama
; S. Uchida
; | | Date: |
27 Feb 2001 | | Journal: | Phys. Rev. Lett. 88, 177403 (2002) DOI: 10.1103/PhysRevLett.88.177403 | | Subject: | Strongly Correlated Electrons | cond-mat.str-el | | Abstract: | We report momentum resolved charge excitations in a one dimensional (1-D) Mott insulator studied using high resolution (~ 325 meV) inelastic x-ray scattering over the entire Brillouin zone for the first time. Excitations at the insulating gap edge are found to be highly dispersive (momentum dependent)compared to excitations observed in two dimensional Mott insulators. The observed dispersion in 1-D is consistent with charge excitations involving holons which is unique to spin-1/2 quantum chain systems. These results point to the potential utility of inelastic x-ray scattering in providing valuable information about electronic structure of strongly correlated insulators. | | Source: | arXiv, cond-mat/0102485 | | Services: | Forum | Review | PDF | Favorites | |
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