{"id":1696,"date":"2023-03-08T08:20:14","date_gmt":"2023-03-08T08:20:14","guid":{"rendered":"https:\/\/www.nanosciences-spm-uhv.com\/?p=1696"},"modified":"2025-11-05T16:59:15","modified_gmt":"2025-11-05T16:59:15","slug":"pub6","status":"publish","type":"post","link":"https:\/\/www.nanosciences-spm-uhv.com\/en\/pub6\/","title":{"rendered":"Formation of Monolayer Charge Density Waves and Anomalous Edge Doping in Na Doped Bulk VSe2"},"content":{"rendered":"

Alkali atom doping is an efficient way to induce charge transfer and Fermi level tuning in layered materials through intercalation. However, there is a general lack of microscopic understanding of the effect of doping inhomogeneity in geometric and electronic aspects. Here, we report surface doping of a bulk VSe2<\/sub> crystal by sodium. Na atoms form intercalated subsurface islands that modify the electronic phase of the top layer of VSe2<\/sub>. In addition to n-doping, the charge density wave of the intercalated VSe2<\/sub> surface layer changes from the (4 \u00d7 4) bulk phase to the (\u221a3x\u221a7) known in monolayer phase of VSe2<\/sub>. Surprisingly, an electronic state at the edges of Na-intercalated area shift anomalously upward in energy as detected by scanning tunneling spectroscopy. This is explained by a local gating effect resulting from local dipoles at the edges. The study illustrates a clear example of intercalation effect that should be general in alkali-intercalated bulk layered materials.<\/p>\n\n\n

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DOI : 10.1002\/admi.202201680<\/a><\/p>

Authors : Ulysse Chazarin, Mah\u00e9 Lezoualc'h, Jyh-Ping Chou, Woei Wu Pai, Abhishek Karn, Raman Sankar, Cyril C. Chacon, Yann Girard, Vincent Repain, Amandine Bellec, Sylvie Rousset, Alexander Smogunov, Yannick J. Dappe, J\u00e9r\u00f4me Lagoute<\/p>","protected":false},"excerpt":{"rendered":"

Alkali atom doping is an efficient way to induce charge transfer and Fermi level tuning in layered materials through intercalation. However, there is a general lack of microscopic understanding of the effect of doping inhomogeneity in geometric and electronic aspects. Here, we report surface doping of a bulk VSe2 crystal by sodium. Na atoms form<\/p><\/div>\n

Read More<\/a><\/p>","protected":false},"author":1,"featured_media":1698,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","footnotes":""},"categories":[19,23],"tags":[],"class_list":["post-1696","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-axe-1","category-axe5"],"uagb_featured_image_src":{"full":["https:\/\/www.nanosciences-spm-uhv.com\/wp-content\/uploads\/2023\/03\/Figure_VSe2_Na.jpg",455,384,false],"thumbnail":["https:\/\/www.nanosciences-spm-uhv.com\/wp-content\/uploads\/2023\/03\/Figure_VSe2_Na-150x150.jpg",150,150,true],"medium":["https:\/\/www.nanosciences-spm-uhv.com\/wp-content\/uploads\/2023\/03\/Figure_VSe2_Na-300x253.jpg",300,253,true],"medium_large":["https:\/\/www.nanosciences-spm-uhv.com\/wp-content\/uploads\/2023\/03\/Figure_VSe2_Na.jpg",455,384,false],"large":["https:\/\/www.nanosciences-spm-uhv.com\/wp-content\/uploads\/2023\/03\/Figure_VSe2_Na.jpg",455,384,false],"1536x1536":["https:\/\/www.nanosciences-spm-uhv.com\/wp-content\/uploads\/2023\/03\/Figure_VSe2_Na.jpg",455,384,false],"2048x2048":["https:\/\/www.nanosciences-spm-uhv.com\/wp-content\/uploads\/2023\/03\/Figure_VSe2_Na.jpg",455,384,false],"trp-custom-language-flag":["https:\/\/www.nanosciences-spm-uhv.com\/wp-content\/uploads\/2023\/03\/Figure_VSe2_Na-14x12.jpg",14,12,true],"sow-carousel-default":["https:\/\/www.nanosciences-spm-uhv.com\/wp-content\/uploads\/2023\/03\/Figure_VSe2_Na-272x182.jpg",272,182,true]},"uagb_author_info":{"display_name":false,"author_link":"https:\/\/www.nanosciences-spm-uhv.com\/en\/author\/zpqq18wlui98\/"},"uagb_comment_info":0,"uagb_excerpt":"Alkali atom doping is an efficient way to induce charge transfer and Fermi level tuning in layered materials through intercalation. However, there is a general lack of microscopic understanding of the effect of doping inhomogeneity in geometric and electronic aspects. Here, we report surface doping of a bulk VSe2 crystal by sodium. Na atoms formRead…","_links":{"self":[{"href":"https:\/\/www.nanosciences-spm-uhv.com\/en\/wp-json\/wp\/v2\/posts\/1696","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nanosciences-spm-uhv.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nanosciences-spm-uhv.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nanosciences-spm-uhv.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nanosciences-spm-uhv.com\/en\/wp-json\/wp\/v2\/comments?post=1696"}],"version-history":[{"count":4,"href":"https:\/\/www.nanosciences-spm-uhv.com\/en\/wp-json\/wp\/v2\/posts\/1696\/revisions"}],"predecessor-version":[{"id":1720,"href":"https:\/\/www.nanosciences-spm-uhv.com\/en\/wp-json\/wp\/v2\/posts\/1696\/revisions\/1720"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nanosciences-spm-uhv.com\/en\/wp-json\/wp\/v2\/media\/1698"}],"wp:attachment":[{"href":"https:\/\/www.nanosciences-spm-uhv.com\/en\/wp-json\/wp\/v2\/media?parent=1696"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nanosciences-spm-uhv.com\/en\/wp-json\/wp\/v2\/categories?post=1696"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nanosciences-spm-uhv.com\/en\/wp-json\/wp\/v2\/tags?post=1696"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}