Angle-Dependent van Hove Singularities and Their Breakdown in Twisted Graphene Bilayers
The creation of van der Waals heterostructures based on a graphene monolayer and other two-dimensional crystals has attracted great interest because atomic registry of the two-dimensional crystals can modify the electronic spectra and properties of graphene. Twisted graphene bilayer can be viewed as...
Gespeichert in:
| Veröffentlicht in: | arXiv.org 2014-04 |
|---|---|
| Hauptverfasser: | , , , , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | |
|---|---|
| container_issue | |
| container_start_page | |
| container_title | arXiv.org |
| container_volume | |
| creator | Yan, Wei Meng, Lan Liu, Mengxi Jia-Bin Qiao Zhao-Dong, Chu Rui-Fen Dou Liu, Zhongfan Jia-Cai Nie He, Lin |
| description | The creation of van der Waals heterostructures based on a graphene monolayer and other two-dimensional crystals has attracted great interest because atomic registry of the two-dimensional crystals can modify the electronic spectra and properties of graphene. Twisted graphene bilayer can be viewed as a special van der Waals structure composed of two mutual misoriented graphene layers, where the sublayer graphene not only plays the role of a substrate, but also acts as an equivalent role as the top graphene layer in the structure. Here we report the electronic spectra of slightly twisted graphene bilayers studied by scanning tunneling microscopy and spectroscopy. Our experiment demonstrates that twist-induced van Hove singularities are ubiquitously present for rotation angles theta less than about 3.5o, corresponding to moiré-pattern periods D longer than 4 nm. However, they totally vanish for theta > 5.5o (D < 2.5 nm). Such a behavior indicates that the continuum models, which capture moiré-pattern periodicity more accurately at small rotation angles, are no longer applicable at large rotation angles. |
| doi_str_mv | 10.48550/arxiv.1404.4406 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_arxiv</sourceid><recordid>TN_cdi_arxiv_primary_1404_4406</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2084845953</sourcerecordid><originalsourceid>FETCH-LOGICAL-a513-4baf141d78de63d69499e3ff96cd48e2588518c3be9c631a97f6c8985653b25e3</originalsourceid><addsrcrecordid>eNotj81PwjAchhsTEwly92SaeB72m_YIqGBC4sElHpdu_Q2Ks5vtAPnvBfH0Xp68eR6E7igZCy0lebTxx-_HVBAxFoKoKzRgnNNMC8Zu0CilLSGEqQmTkg_QxzSsG8ieoIPgIPR4bwNetnvA7z6sd42NvveQsA0O5xvwEc8i2E_XHgL2AecHn3pweBFtt4EAeOYbe4SYbtF1bZsEo_8dovzlOZ8vs9Xb4nU-XWVWUp6J0tZUUDfRDhR3yghjgNe1UZUTGpjUWlJd8RJMpTi1ZlKrShstleQlk8CH6P5y-xdddNF_2XgszvHFOf4EPFyALrbfO0h9sW13MZyUCka00EIayfkvWJRcOg</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2084845953</pqid></control><display><type>article</type><title>Angle-Dependent van Hove Singularities and Their Breakdown in Twisted Graphene Bilayers</title><source>arXiv.org</source><source>Free E- Journals</source><creator>Yan, Wei ; Meng, Lan ; Liu, Mengxi ; Jia-Bin Qiao ; Zhao-Dong, Chu ; Rui-Fen Dou ; Liu, Zhongfan ; Jia-Cai Nie ; He, Lin</creator><creatorcontrib>Yan, Wei ; Meng, Lan ; Liu, Mengxi ; Jia-Bin Qiao ; Zhao-Dong, Chu ; Rui-Fen Dou ; Liu, Zhongfan ; Jia-Cai Nie ; He, Lin</creatorcontrib><description>The creation of van der Waals heterostructures based on a graphene monolayer and other two-dimensional crystals has attracted great interest because atomic registry of the two-dimensional crystals can modify the electronic spectra and properties of graphene. Twisted graphene bilayer can be viewed as a special van der Waals structure composed of two mutual misoriented graphene layers, where the sublayer graphene not only plays the role of a substrate, but also acts as an equivalent role as the top graphene layer in the structure. Here we report the electronic spectra of slightly twisted graphene bilayers studied by scanning tunneling microscopy and spectroscopy. Our experiment demonstrates that twist-induced van Hove singularities are ubiquitously present for rotation angles theta less than about 3.5o, corresponding to moiré-pattern periods D longer than 4 nm. However, they totally vanish for theta > 5.5o (D < 2.5 nm). Such a behavior indicates that the continuum models, which capture moiré-pattern periodicity more accurately at small rotation angles, are no longer applicable at large rotation angles.</description><identifier>EISSN: 2331-8422</identifier><identifier>DOI: 10.48550/arxiv.1404.4406</identifier><language>eng</language><publisher>Ithaca: Cornell University Library, arXiv.org</publisher><subject>Bilayers ; Continuum modeling ; Electronic spectra ; Graphene ; Heterostructures ; Periodic variations ; Physics - Materials Science ; Physics - Mesoscale and Nanoscale Physics ; Rotation ; Singularities ; Spectrum analysis ; Substrates</subject><ispartof>arXiv.org, 2014-04</ispartof><rights>2014. This work is published under http://arxiv.org/licenses/nonexclusive-distrib/1.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>http://arxiv.org/licenses/nonexclusive-distrib/1.0</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>228,230,780,784,885,27923</link.rule.ids><backlink>$$Uhttps://doi.org/10.1103/PhysRevB.90.115402$$DView published paper (Access to full text may be restricted)$$Hfree_for_read</backlink><backlink>$$Uhttps://doi.org/10.48550/arXiv.1404.4406$$DView paper in arXiv$$Hfree_for_read</backlink></links><search><creatorcontrib>Yan, Wei</creatorcontrib><creatorcontrib>Meng, Lan</creatorcontrib><creatorcontrib>Liu, Mengxi</creatorcontrib><creatorcontrib>Jia-Bin Qiao</creatorcontrib><creatorcontrib>Zhao-Dong, Chu</creatorcontrib><creatorcontrib>Rui-Fen Dou</creatorcontrib><creatorcontrib>Liu, Zhongfan</creatorcontrib><creatorcontrib>Jia-Cai Nie</creatorcontrib><creatorcontrib>He, Lin</creatorcontrib><title>Angle-Dependent van Hove Singularities and Their Breakdown in Twisted Graphene Bilayers</title><title>arXiv.org</title><description>The creation of van der Waals heterostructures based on a graphene monolayer and other two-dimensional crystals has attracted great interest because atomic registry of the two-dimensional crystals can modify the electronic spectra and properties of graphene. Twisted graphene bilayer can be viewed as a special van der Waals structure composed of two mutual misoriented graphene layers, where the sublayer graphene not only plays the role of a substrate, but also acts as an equivalent role as the top graphene layer in the structure. Here we report the electronic spectra of slightly twisted graphene bilayers studied by scanning tunneling microscopy and spectroscopy. Our experiment demonstrates that twist-induced van Hove singularities are ubiquitously present for rotation angles theta less than about 3.5o, corresponding to moiré-pattern periods D longer than 4 nm. However, they totally vanish for theta > 5.5o (D < 2.5 nm). Such a behavior indicates that the continuum models, which capture moiré-pattern periodicity more accurately at small rotation angles, are no longer applicable at large rotation angles.</description><subject>Bilayers</subject><subject>Continuum modeling</subject><subject>Electronic spectra</subject><subject>Graphene</subject><subject>Heterostructures</subject><subject>Periodic variations</subject><subject>Physics - Materials Science</subject><subject>Physics - Mesoscale and Nanoscale Physics</subject><subject>Rotation</subject><subject>Singularities</subject><subject>Spectrum analysis</subject><subject>Substrates</subject><issn>2331-8422</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GOX</sourceid><recordid>eNotj81PwjAchhsTEwly92SaeB72m_YIqGBC4sElHpdu_Q2Ks5vtAPnvBfH0Xp68eR6E7igZCy0lebTxx-_HVBAxFoKoKzRgnNNMC8Zu0CilLSGEqQmTkg_QxzSsG8ieoIPgIPR4bwNetnvA7z6sd42NvveQsA0O5xvwEc8i2E_XHgL2AecHn3pweBFtt4EAeOYbe4SYbtF1bZsEo_8dovzlOZ8vs9Xb4nU-XWVWUp6J0tZUUDfRDhR3yghjgNe1UZUTGpjUWlJd8RJMpTi1ZlKrShstleQlk8CH6P5y-xdddNF_2XgszvHFOf4EPFyALrbfO0h9sW13MZyUCka00EIayfkvWJRcOg</recordid><startdate>20140417</startdate><enddate>20140417</enddate><creator>Yan, Wei</creator><creator>Meng, Lan</creator><creator>Liu, Mengxi</creator><creator>Jia-Bin Qiao</creator><creator>Zhao-Dong, Chu</creator><creator>Rui-Fen Dou</creator><creator>Liu, Zhongfan</creator><creator>Jia-Cai Nie</creator><creator>He, Lin</creator><general>Cornell University Library, arXiv.org</general><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>GOX</scope></search><sort><creationdate>20140417</creationdate><title>Angle-Dependent van Hove Singularities and Their Breakdown in Twisted Graphene Bilayers</title><author>Yan, Wei ; Meng, Lan ; Liu, Mengxi ; Jia-Bin Qiao ; Zhao-Dong, Chu ; Rui-Fen Dou ; Liu, Zhongfan ; Jia-Cai Nie ; He, Lin</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a513-4baf141d78de63d69499e3ff96cd48e2588518c3be9c631a97f6c8985653b25e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Bilayers</topic><topic>Continuum modeling</topic><topic>Electronic spectra</topic><topic>Graphene</topic><topic>Heterostructures</topic><topic>Periodic variations</topic><topic>Physics - Materials Science</topic><topic>Physics - Mesoscale and Nanoscale Physics</topic><topic>Rotation</topic><topic>Singularities</topic><topic>Spectrum analysis</topic><topic>Substrates</topic><toplevel>online_resources</toplevel><creatorcontrib>Yan, Wei</creatorcontrib><creatorcontrib>Meng, Lan</creatorcontrib><creatorcontrib>Liu, Mengxi</creatorcontrib><creatorcontrib>Jia-Bin Qiao</creatorcontrib><creatorcontrib>Zhao-Dong, Chu</creatorcontrib><creatorcontrib>Rui-Fen Dou</creatorcontrib><creatorcontrib>Liu, Zhongfan</creatorcontrib><creatorcontrib>Jia-Cai Nie</creatorcontrib><creatorcontrib>He, Lin</creatorcontrib><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Engineering Collection</collection><collection>Engineering Database</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering Collection</collection><collection>arXiv.org</collection><jtitle>arXiv.org</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yan, Wei</au><au>Meng, Lan</au><au>Liu, Mengxi</au><au>Jia-Bin Qiao</au><au>Zhao-Dong, Chu</au><au>Rui-Fen Dou</au><au>Liu, Zhongfan</au><au>Jia-Cai Nie</au><au>He, Lin</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Angle-Dependent van Hove Singularities and Their Breakdown in Twisted Graphene Bilayers</atitle><jtitle>arXiv.org</jtitle><date>2014-04-17</date><risdate>2014</risdate><eissn>2331-8422</eissn><abstract>The creation of van der Waals heterostructures based on a graphene monolayer and other two-dimensional crystals has attracted great interest because atomic registry of the two-dimensional crystals can modify the electronic spectra and properties of graphene. Twisted graphene bilayer can be viewed as a special van der Waals structure composed of two mutual misoriented graphene layers, where the sublayer graphene not only plays the role of a substrate, but also acts as an equivalent role as the top graphene layer in the structure. Here we report the electronic spectra of slightly twisted graphene bilayers studied by scanning tunneling microscopy and spectroscopy. Our experiment demonstrates that twist-induced van Hove singularities are ubiquitously present for rotation angles theta less than about 3.5o, corresponding to moiré-pattern periods D longer than 4 nm. However, they totally vanish for theta > 5.5o (D < 2.5 nm). Such a behavior indicates that the continuum models, which capture moiré-pattern periodicity more accurately at small rotation angles, are no longer applicable at large rotation angles.</abstract><cop>Ithaca</cop><pub>Cornell University Library, arXiv.org</pub><doi>10.48550/arxiv.1404.4406</doi><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | EISSN: 2331-8422 |
| ispartof | arXiv.org, 2014-04 |
| issn | 2331-8422 |
| language | eng |
| recordid | cdi_arxiv_primary_1404_4406 |
| source | arXiv.org; Free E- Journals |
| subjects | Bilayers Continuum modeling Electronic spectra Graphene Heterostructures Periodic variations Physics - Materials Science Physics - Mesoscale and Nanoscale Physics Rotation Singularities Spectrum analysis Substrates |
| title | Angle-Dependent van Hove Singularities and Their Breakdown in Twisted Graphene Bilayers |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-14T09%3A19%3A26IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_arxiv&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Angle-Dependent%20van%20Hove%20Singularities%20and%20Their%20Breakdown%20in%20Twisted%20Graphene%20Bilayers&rft.jtitle=arXiv.org&rft.au=Yan,%20Wei&rft.date=2014-04-17&rft.eissn=2331-8422&rft_id=info:doi/10.48550/arxiv.1404.4406&rft_dat=%3Cproquest_arxiv%3E2084845953%3C/proquest_arxiv%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2084845953&rft_id=info:pmid/&rfr_iscdi=true |