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20012026
most citedOn the possibility of an excitonic insulator at the semiconductor-semimetal transition

143 citations · 1.4k across the 62 of their papers we have counts for

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20 papers · 1 filter

cond-mat.str-el2014★ 22 cited

Many-body theory of the neutralization of strontium ions on gold surfaces

M. Pamperin, F. X. Bronold, H. Fehske

Motivated by experimental evidence for mixed-valence correlations affecting the neutralization of strontium ions on gold surfaces we set up an Anderson-Newns model for the Sr:Au sy…

cond-mat.str-el2014★ 3 cited

Exciton formation in strongly correlated electron-hole systems near the semimetal-semiconductor transition

B Zenker, D Ihle, F X Bronold +1

The region surrounding the excitonic insulator phase is a three-component plasma composed of electrons, holes, and excitons. Due to the extended nature of the excitons, their prese…

cond-mat.str-el2014★ 5 cited

Mixed-valence correlations in charge-transferring atom-surface collisions

M. Pamperin, F. X. Bronold, H. Fehske

Motivated by experimental evidence for a mixed-valence state to occur in the neutralization of strontium ions on gold surfaces we analyze this type of charge-transferring atom-surf…

cond-mat.str-el2012★ 13 cited

Pseudo-particle approach for charge-transferring molecule-surface collisions

Johannes Marbach, Franz Xaver Bronold, Holger Fehske

Based on a semi-empirical generalized Anderson-Newns model we construct a pseudo-particle description for electron emission due to de-excitation of metastable molecules at surfaces…

cond-mat.str-el2012★ 99 cited

Electron-hole pair condensation at the semimetal-semiconductor transition: a BCS-BEC crossover scenario

B. Zenker, D. Ihle, F. X. Bronold +1

We act on the suggestion that an excitonic insulator state might separate---at very low temperatures---a semimetal from a semiconductor and ask for the nature of these transitions.…

cond-mat.str-el2011★ 29 cited

Slave-boson field fluctuation approach to the extended Falicov-Kimball model: charge, orbital, and excitonic susceptibilities

B. Zenker, D. Ihle, F. X. Bronold +1

Based on the SO(2)-invariant slave-boson scheme, the static charge, orbital, and excitonic susceptibilities in the extended Falicov-Kimball model are calculated. Analyzing the phas…