Anomalous Angular Dependence of the Dynamic Structure Factor near Bragg Reflections: Graphite - Archive ouverte HAL Access content directly
Journal Articles Physical Review Letters Year : 2008

Anomalous Angular Dependence of the Dynamic Structure Factor near Bragg Reflections: Graphite

R. Hambach
• Function : Author
• PersonId : 869034
C. Giorgetti
N. Hiraoka
• Function : Author
Y.Q. Cai
• Function : Author
F. Sottile
F. Bechstedt
• Function : Author
Lucia Reining
• Function : Author
• PersonId : 831762

Abstract

The electron energy-loss function of graphite is studied for momentum transfers q beyond the first Brillouin zone. We find that near Bragg reflections the spectra can change drastically for very small variations in q. The effect is investigated by means of first principle calculations in the random phase approximation and confirmed by inelastic x-ray scattering measurements of the dynamic structure factor S(q,ω). We demonstrate that this effect is governed by crystal local field effects and the stacking of graphite. It is traced back to a strong coupling between excitations at small and large momentum transfers.

Dates and versions

hal-00476164 , version 1 (23-04-2010)

Identifiers

• HAL Id : hal-00476164 , version 1
• ARXIV :
• DOI :

Cite

R. Hambach, C. Giorgetti, N. Hiraoka, Y.Q. Cai, F. Sottile, et al.. Anomalous Angular Dependence of the Dynamic Structure Factor near Bragg Reflections: Graphite. Physical Review Letters, 2008, 101 (26), http://prl.aps.org/abstract/PRL/v101/i26/e266406. ⟨10.1103/PhysRevLett.101.266406⟩. ⟨hal-00476164⟩

172 View
{"extraction_info": {"found_math": false, "script_math_tex": 0, "script_math_asciimath": 0, "math_annotations": 0, "math_alttext": 0, "mathml": 0, "mathjax_tag": 0, "mathjax_inline_tex": 0, "mathjax_display_tex": 0, "mathjax_asciimath": 0, "img_math": 0, "codecogs_latex": 0, "wp_latex": 0, "mimetex.cgi": 0, "/images/math/codecogs": 0, "mathtex.cgi": 0, "katex": 0, "math-container": 0, "wp-katex-eq": 0, "align": 0, "equation": 0, "x-ck12": 0, "texerror": 0, "math_score": 0.8746175765991211, "perplexity": 9020.511218007581}, "config": {"markdown_headings": false, "markdown_code": true, "boilerplate_config": {"ratio_threshold": 0.18, "absolute_threshold": 10, "end_threshold": 15, "enable": true}, "remove_buttons": true, "remove_image_figures": true, "remove_link_clusters": true, "table_config": {"min_rows": 2, "min_cols": 3, "format": "plain"}, "remove_chinese": true, "remove_edit_buttons": true, "extract_latex": true}, "warc_path": "s3://commoncrawl/crawl-data/CC-MAIN-2023-14/segments/1679296944452.97/warc/CC-MAIN-20230322211955-20230323001955-00755.warc.gz"}