Particle-hole pair excitations in a quasi-zero-dimensional mott insulator

M. Z. Hasan; Y. Li; Y. D. Chuang; P. A. Montano; Z. Hussain; H. Eisaki; N. Motoyama; S. Uchida

doi:10.1142/s0217979203021319

Particle-hole pair excitations in a quasi-zero-dimensional mott insulator

M. Z. Hasan, Y. Li, Y. D. Chuang, P. A. Montano, Z. Hussain, H. Eisaki, N. Motoyama, S. Uchida

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2 Scopus citations

Abstract

We investigate momentum dependence of charge excitations across the effective Mott gap in a quasi-zero dimensional (q-ZD) model cuprate Li ₂CuO₂, using high resolution inelastic X-ray scattering by working near a resonance. In comparison to quasi-one dimensional (q-1D) systems such as Sr₂CuO₃ or SrCuO₂, momentum dependence is much weaker in Li₂CuO₂. Particle-hole pair excitations at the gap edge in these low dimensional Mott systems are found to be strongly dependent on the effective dimensionality (or topology) of the lattice and the strength of electron-electron interaction.

Original language	English (US)
Pages (from-to)	3513-3518
Number of pages	6
Journal	International Journal of Modern Physics B
Volume	17
Issue number	18-20 II
DOIs	https://doi.org/10.1142/s0217979203021319
State	Published - Aug 10 2003

All Science Journal Classification (ASJC) codes

Statistical and Nonlinear Physics
Condensed Matter Physics

Keywords

Correlated electrons
Inelastic X-ray scattering
Mott insulators
Resonant

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10.1142/s0217979203021319

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title = "Particle-hole pair excitations in a quasi-zero-dimensional mott insulator",

abstract = "We investigate momentum dependence of charge excitations across the effective Mott gap in a quasi-zero dimensional (q-ZD) model cuprate Li 2CuO2, using high resolution inelastic X-ray scattering by working near a resonance. In comparison to quasi-one dimensional (q-1D) systems such as Sr2CuO3 or SrCuO2, momentum dependence is much weaker in Li2CuO2. Particle-hole pair excitations at the gap edge in these low dimensional Mott systems are found to be strongly dependent on the effective dimensionality (or topology) of the lattice and the strength of electron-electron interaction.",

keywords = "Correlated electrons, Inelastic X-ray scattering, Mott insulators, Resonant",

author = "Hasan, {M. Z.} and Y. Li and Chuang, {Y. D.} and Montano, {P. A.} and Z. Hussain and H. Eisaki and N. Motoyama and S. Uchida",

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language = "English (US)",

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T1 - Particle-hole pair excitations in a quasi-zero-dimensional mott insulator

AU - Hasan, M. Z.

AU - Li, Y.

AU - Chuang, Y. D.

AU - Montano, P. A.

AU - Hussain, Z.

AU - Eisaki, H.

AU - Motoyama, N.

AU - Uchida, S.

PY - 2003/8/10

Y1 - 2003/8/10

N2 - We investigate momentum dependence of charge excitations across the effective Mott gap in a quasi-zero dimensional (q-ZD) model cuprate Li 2CuO2, using high resolution inelastic X-ray scattering by working near a resonance. In comparison to quasi-one dimensional (q-1D) systems such as Sr2CuO3 or SrCuO2, momentum dependence is much weaker in Li2CuO2. Particle-hole pair excitations at the gap edge in these low dimensional Mott systems are found to be strongly dependent on the effective dimensionality (or topology) of the lattice and the strength of electron-electron interaction.

AB - We investigate momentum dependence of charge excitations across the effective Mott gap in a quasi-zero dimensional (q-ZD) model cuprate Li 2CuO2, using high resolution inelastic X-ray scattering by working near a resonance. In comparison to quasi-one dimensional (q-1D) systems such as Sr2CuO3 or SrCuO2, momentum dependence is much weaker in Li2CuO2. Particle-hole pair excitations at the gap edge in these low dimensional Mott systems are found to be strongly dependent on the effective dimensionality (or topology) of the lattice and the strength of electron-electron interaction.

KW - Correlated electrons

KW - Inelastic X-ray scattering

KW - Mott insulators

KW - Resonant

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JO - International Journal of Modern Physics B

JF - International Journal of Modern Physics B

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ER -

Particle-hole pair excitations in a quasi-zero-dimensional mott insulator

Abstract

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