{"id":29922,"date":"2025-07-08T11:36:35","date_gmt":"2025-07-08T03:36:35","guid":{"rendered":"\/phys\/?post_type=tkuisotope&#038;p=29922"},"modified":"2025-07-08T11:36:37","modified_gmt":"2025-07-08T03:36:37","slug":"revealing-the-charge-density-wave-caused-by-peierls-instability-in-two-dimensional-nbse2-hung-chung-hsueh","status":"publish","type":"tkuisotope","link":"\/phys\/?tkuisotope=revealing-the-charge-density-wave-caused-by-peierls-instability-in-two-dimensional-nbse2-hung-chung-hsueh","title":{"rendered":"Revealing the Charge Density Wave Caused by Peierls Instability in Two-Dimensional NbSe2 (Hung-Chung Hsueh)"},"content":{"rendered":"\n<div class=\"wp-block-tkuwpbs5-bs5-container container\" style=\"position:relative\" block_id=\"mctz7xpykaly2nvmwz\"><style><\/style>\n<div class=\"wp-block-tkuwpbs5-bs5-row row\">\n<div class=\"wp-block-tkuwpbs5-bs5-column col-md-12 align-self-start\">\n<p class=\"has-background has-medium-font-size\" style=\"background-color:#9b51e02e\">Yung-Ting Lee Po-Tuan Chen Zheng-Hong Li Jyun-Yu Wu Chia-Nung Kuo Chin Shan Lue Chien-Te Wu Chien-Cheng Kuo Cheng-Tien Chiang Taisuke Ozaki Chun-Liang Lin<strong>*<\/strong> Chi-Cheng Lee<strong>*<\/strong> <strong>Hung-Chung Hsueh*<\/strong> Ming-Chiang Chung<strong>*<\/strong>   <em>ACS Materials Lett.<\/em>\u00a02024, 6, 7, 2941\u20132947<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-tkuwpbs5-bs5-column col-md-12 align-self-start\">\n<p class=\"has-medium-font-size\"><strong><strong>Full Article<\/strong>:<\/strong><a rel=\"noreferrer noopener\" href=\"https:\/\/pubs.acs.org\/doi\/10.1021\/acsmaterialslett.4c00142\" data-type=\"link\" data-id=\"https:\/\/www.science.org\/doi\/10.1126\/science.aav5842\" target=\"_blank\">https:\/\/pubs.acs.org\/doi\/10.1021\/acsmaterialslett.4c00142<\/a><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-tkuwpbs5-bs5-column col-md-12 align-self-start\">\n<p>This research delves into the controversial role of Fermi surface nesting in the formation of charge density waves (CDWs) in 2H-NbSe2 due to Peierls instability.<\/p>\n\n\n\n<p>By analyzing characteristics derived from scanning tunneling microscopy (STM) images and first-principles simulations, four distinct atomic structures of NbSe2 were identified. The calculations revealed an energetically favorable commensurate phase atomic structure. This structure aligns with Peierls&#8217; description, exhibiting a fully opened electronic band gap at the CDW Brillouin zone boundary. This opening leads to a noticeable decrease in both the density of states and scanning tunneling spectra at the Fermi level.<\/p>\n\n\n\n<p>Further investigation into the electronic susceptibility and phonon instability indicates that this commensurate phase&#8217;s Fermi surface nesting is triggered by the combination of two nesting vectors. If only a single nesting vector were involved, it would result in a &#8220;stripe phase.&#8221;<\/p>\n\n\n\n<p>This comprehensive study concludes that the commensurate phase structure of NbSe2 can be classified as a CDW driven by Peierls instability in a two-dimensional system.<\/p>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"author":12,"template":"wp-custom-template-detail-4-post","meta":{"_uag_custom_page_level_css":""},"categories":[103],"tags":[],"acf":[],"featured_image_urls":{"full":"","thumbnail":"","medium":"","medium_large":"","large":"","twp-icon":"","1536x1536":"","2048x2048":""},"post_excerpt_stackable":"<p>Yung-Ting Lee Po-Tuan Chen Zheng-Hong Li Jyun-Yu Wu Chia-Nung Kuo Chin Shan Lue Chien-Te Wu Chien-Cheng Kuo Cheng-Tien Chiang Taisuke Ozaki Chun-Liang Lin* Chi-Cheng Lee* Hung-Chung Hsueh* Ming-Chiang Chung* ACS Materials Lett.\u00a02024, 6, 7, 2941\u20132947 Full Article:https:\/\/pubs.acs.org\/doi\/10.1021\/acsmaterialslett.4c00142 This research delves into the controversial role of Fermi surface nesting in the formation of charge density waves (CDWs) in 2H-NbSe2 due to Peierls instability. By analyzing characteristics derived from scanning tunneling microscopy (STM) images and first-principles simulations, four distinct atomic structures of NbSe2 were identified. The calculations revealed an energetically favorable commensurate phase atomic structure. This structure aligns with Peierls&#8217; description, exhibiting&hellip;<\/p>\n","category_list":"<a href=\"\/phys\/?cat=103\" rel=\"category\">journal<\/a>","author_info":{"name":"\u674e\u7b60\u92a3","url":"\/phys\/?author=12"},"comments_num":"0 comments","uagb_featured_image_src":[],"uagb_author_info":{"display_name":"\u674e\u7b60\u92a3","author_link":"\/phys\/?author=12"},"uagb_comment_info":0,"uagb_excerpt":null,"_links":{"self":[{"href":"\/phys\/index.php?rest_route=\/wp\/v2\/tkuisotope\/29922"}],"collection":[{"href":"\/phys\/index.php?rest_route=\/wp\/v2\/tkuisotope"}],"about":[{"href":"\/phys\/index.php?rest_route=\/wp\/v2\/types\/tkuisotope"}],"author":[{"embeddable":true,"href":"\/phys\/index.php?rest_route=\/wp\/v2\/users\/12"}],"wp:attachment":[{"href":"\/phys\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=29922"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/phys\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=29922"},{"taxonomy":"post_tag","embeddable":true,"href":"\/phys\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=29922"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}