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Particle-Hole Asymmetry in Doped Mott Insulators: Implications for Tunneling and Photoemission Spectroscopies

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/48146

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Title: Particle-Hole Asymmetry in Doped Mott Insulators: Implications for Tunneling and Photoemission Spectroscopies
Creators: Randeria, Mohit; Sensarma, Rajdeep; Trivedi, Nandini; Zhang, Fu-Chun
Issue Date: 2005-09-19
Publisher: American Physical Society
Citation: Mohit Randeria et al, "Particle-Hole Asymmetry in Doped Mott Insulators: Implications for Tunneling and Photoemission Spectroscopies," Physical Review Letters 95, no. 13 (2005), doi:10.1103/PhysRevLett.95.137001
DOI: 10.1103/PhysRevLett.95.137001
Abstract: We use exact sum rules for the one-particle spectral function to quantify the idea that it is more difficult to add an electron than to extract one in a system with strong local repulsion. Our results explain the striking asymmetry in the tunneling spectra of underdoped cuprates which increases with underdoping. We also propose a novel method, based on ratios of sum rules, to estimate local density variations in inhomogeneous materials. Using a variational approach, we show that the origin of the particle-hole asymmetry lies in the incoherent spectral weight.
ISSN: 1079-7114
URI: http://hdl.handle.net/1811/48146
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