{"paper":{"title":"Enhanced excitonic effects in the energy loss spectra of LiF and Ar at large momentum transfer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A Rubio, A. Sanna, E. K. U. Gross, J. K. Dewhurst, S. Sharma","submitted_at":"2012-04-12T13:53:45Z","abstract_excerpt":"It is demonstrated that the bootstrap kernel [\\onlinecite{sharma11}] for finite values of ${\\bf q}$ crucially depends upon the matrix character of the kernel and gives results of the same good quality as in the ${\\bf q} \\rightarrow 0$ limit. The bootstrap kernel is further used to study the electron loss as well as absorption spectra for Si, LiF and Ar for various values of ${\\bf q}$. The results show that the excitonic effects in LiF and Ar are enhanced for values of ${\\bf q}$ away from the $\\Gamma$-point. The reason for this enhancement is the interaction between the exciton and high energy "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.2724","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}