Dispersion relation of charge gap excitations in quasi-1D Mott insulators studied by resonant X-ray scattering

D. Qian; Yinwan Li; M. Z. Hasan; D. M. Casa; T. Gog; Y. D. Chuang; K. Tsutsui; T. Tohyama; S. Maekawa; H. Eisaki; S. Uchida

doi:10.1016/j.jpcs.2005.09.094

Dispersion relation of charge gap excitations in quasi-1D Mott insulators studied by resonant X-ray scattering

D. Qian
, Yinwan Li
, M. Z. Hasan
, D. M. Casa
, T. Gog
, Y. D. Chuang
, K. Tsutsui
, T. Tohyama
, S. Maekawa
, H. Eisaki
, S. Uchida

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

Momentum dependence of charge excitations across the effective Mott gap in several quasi-low-dimensional model cuprates with different effective dimensionalities is studied using high resolution inelastic X-ray scattering by working near Copper k-edge resonance which allows us to extract the dispersion relations of the particle-hole pair excitations at the gap edge. Besides electron-electron correlation, momentum dependence of the gap-excitations is found to be strongly dependent on the effective dimensionality (or topology) of the 3dx2-y2 network.

Original language	English (US)
Pages (from-to)	2212-2215
Number of pages	4
Journal	Journal of Physics and Chemistry of Solids
Volume	66
Issue number	12
DOIs	https://doi.org/10.1016/j.jpcs.2005.09.094
State	Published - Dec 2005

All Science Journal Classification (ASJC) codes

General Chemistry
General Materials Science
Condensed Matter Physics

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10.1016/j.jpcs.2005.09.094

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@article{f77f79d54b14422bbdcc6bcb3ce58c3e,

title = "Dispersion relation of charge gap excitations in quasi-1D Mott insulators studied by resonant X-ray scattering",

abstract = "Momentum dependence of charge excitations across the effective Mott gap in several quasi-low-dimensional model cuprates with different effective dimensionalities is studied using high resolution inelastic X-ray scattering by working near Copper k-edge resonance which allows us to extract the dispersion relations of the particle-hole pair excitations at the gap edge. Besides electron-electron correlation, momentum dependence of the gap-excitations is found to be strongly dependent on the effective dimensionality (or topology) of the 3dx2-y2 network.",

author = "D. Qian and Yinwan Li and Hasan, \{M. Z.\} and Casa, \{D. M.\} and T. Gog and Chuang, \{Y. D.\} and K. Tsutsui and T. Tohyama and S. Maekawa and H. Eisaki and S. Uchida",

note = "Funding Information: We gratefully acknowledge A. Bansil, P. Chaikin, D. Huse, E. Isaacs and N.P. Ong for stimulating discussions. Use of the Advanced Photon Source was supported by the U.S. Department of Energy, DOE-BES C\#W-31-109-Eng-38. MZH acknowledges partial support through NSF-MRSEC (DMR-0213706) and DOE DE-FG02-05ER46200 grant. Theoretical part was supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology of Japan, and CREST, and the numerical calculations were performed in the supercomputing facilities in ISSP, University of Tokyo, and IMR, Tohoku University.",

year = "2005",

month = dec,

doi = "10.1016/j.jpcs.2005.09.094",

language = "English (US)",

volume = "66",

pages = "2212--2215",

journal = "Journal of Physics and Chemistry of Solids",

issn = "0022-3697",

publisher = "Elsevier Ltd",

number = "12",

}

TY - JOUR

T1 - Dispersion relation of charge gap excitations in quasi-1D Mott insulators studied by resonant X-ray scattering

AU - Qian, D.

AU - Li, Yinwan

AU - Hasan, M. Z.

AU - Casa, D. M.

AU - Gog, T.

AU - Chuang, Y. D.

AU - Tsutsui, K.

AU - Tohyama, T.

AU - Maekawa, S.

AU - Eisaki, H.

AU - Uchida, S.

N1 - Funding Information: We gratefully acknowledge A. Bansil, P. Chaikin, D. Huse, E. Isaacs and N.P. Ong for stimulating discussions. Use of the Advanced Photon Source was supported by the U.S. Department of Energy, DOE-BES C#W-31-109-Eng-38. MZH acknowledges partial support through NSF-MRSEC (DMR-0213706) and DOE DE-FG02-05ER46200 grant. Theoretical part was supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology of Japan, and CREST, and the numerical calculations were performed in the supercomputing facilities in ISSP, University of Tokyo, and IMR, Tohoku University.

PY - 2005/12

Y1 - 2005/12

N2 - Momentum dependence of charge excitations across the effective Mott gap in several quasi-low-dimensional model cuprates with different effective dimensionalities is studied using high resolution inelastic X-ray scattering by working near Copper k-edge resonance which allows us to extract the dispersion relations of the particle-hole pair excitations at the gap edge. Besides electron-electron correlation, momentum dependence of the gap-excitations is found to be strongly dependent on the effective dimensionality (or topology) of the 3dx2-y2 network.

AB - Momentum dependence of charge excitations across the effective Mott gap in several quasi-low-dimensional model cuprates with different effective dimensionalities is studied using high resolution inelastic X-ray scattering by working near Copper k-edge resonance which allows us to extract the dispersion relations of the particle-hole pair excitations at the gap edge. Besides electron-electron correlation, momentum dependence of the gap-excitations is found to be strongly dependent on the effective dimensionality (or topology) of the 3dx2-y2 network.

UR - https://www.scopus.com/pages/publications/29144495607

UR - https://www.scopus.com/pages/publications/29144495607#tab=citedBy

U2 - 10.1016/j.jpcs.2005.09.094

DO - 10.1016/j.jpcs.2005.09.094

M3 - Article

AN - SCOPUS:29144495607

SN - 0022-3697

VL - 66

SP - 2212

EP - 2215

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

IS - 12

ER -

Dispersion relation of charge gap excitations in quasi-1D Mott insulators studied by resonant X-ray scattering

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