Valley-driven Zitterbewegung in Kekul\'e-distorted graphene
Phys. Rev. B 105, 205405, 2 May 2022 Graphene deposited on top of a Copper(111) substrate may develop a Y-shaped Kekul\'e bond texture (Kekul\'e-Y), locking the momentum of its Dirac fermions with its valley degree of freedom. As a consequence, the valley degeneracy of its band structure i...
Gespeichert in:
| Hauptverfasser: | , , , |
|---|---|
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | |
|---|---|
| container_issue | |
| container_start_page | |
| container_title | |
| container_volume | |
| creator | Santacruz, Alex Iglesias, Priscilla E Carrillo-Bastos, Ramon Mireles, Francisco |
| description | Phys. Rev. B 105, 205405, 2 May 2022 Graphene deposited on top of a Copper(111) substrate may develop a Y-shaped
Kekul\'e bond texture (Kekul\'e-Y), locking the momentum of its Dirac fermions
with its valley degree of freedom. As a consequence, the valley degeneracy of
its band structure is broken, generating an energy dispersion with two nested
Dirac cones with different Fermi velocities. In this work, we investigate the
dynamics of electronic wave packets in the Kekul\'e-Y superlattice. We show
that, as a result of the valley-momentum coupling, a valley-driven oscillatory
motion of the wave packets ({\it Zitterbewegung}) could appear, but with a
smaller frequency than the {\it Zitterbewegung} effect found pristine graphene.
This makes Kekul\'e-Y graphene a compelling candidate for experimental
observation of {\it Zitterbewegung} phenomenon in a two-dimensional system. |
| doi_str_mv | 10.48550/arxiv.2112.07845 |
| format | Article |
| fullrecord | <record><control><sourceid>arxiv_GOX</sourceid><recordid>TN_cdi_arxiv_primary_2112_07845</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2112_07845</sourcerecordid><originalsourceid>FETCH-arxiv_primary_2112_078453</originalsourceid><addsrcrecordid>eNpjYJA0NNAzsTA1NdBPLKrILNMzMjQ00jMwtzAx5WSwDkvMyUmt1E0pyixLzVOIyiwpSS1KSi1PTS_NS1fIzFPwTs0uzYlRT9VNySwuyS8qSU1RSC9KLMhIzUvlYWBNS8wpTuWF0twM8m6uIc4eumBr4guKMnMTiyrjQdbFg60zJqwCAPZSNUU</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Valley-driven Zitterbewegung in Kekul\'e-distorted graphene</title><source>arXiv.org</source><creator>Santacruz, Alex ; Iglesias, Priscilla E ; Carrillo-Bastos, Ramon ; Mireles, Francisco</creator><creatorcontrib>Santacruz, Alex ; Iglesias, Priscilla E ; Carrillo-Bastos, Ramon ; Mireles, Francisco</creatorcontrib><description>Phys. Rev. B 105, 205405, 2 May 2022 Graphene deposited on top of a Copper(111) substrate may develop a Y-shaped
Kekul\'e bond texture (Kekul\'e-Y), locking the momentum of its Dirac fermions
with its valley degree of freedom. As a consequence, the valley degeneracy of
its band structure is broken, generating an energy dispersion with two nested
Dirac cones with different Fermi velocities. In this work, we investigate the
dynamics of electronic wave packets in the Kekul\'e-Y superlattice. We show
that, as a result of the valley-momentum coupling, a valley-driven oscillatory
motion of the wave packets ({\it Zitterbewegung}) could appear, but with a
smaller frequency than the {\it Zitterbewegung} effect found pristine graphene.
This makes Kekul\'e-Y graphene a compelling candidate for experimental
observation of {\it Zitterbewegung} phenomenon in a two-dimensional system.</description><identifier>DOI: 10.48550/arxiv.2112.07845</identifier><language>eng</language><subject>Physics - Mesoscale and Nanoscale Physics</subject><creationdate>2021-12</creationdate><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>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>228,230,780,885</link.rule.ids><linktorsrc>$$Uhttps://arxiv.org/abs/2112.07845$$EView_record_in_Cornell_University$$FView_record_in_$$GCornell_University$$Hfree_for_read</linktorsrc><backlink>$$Uhttps://doi.org/10.1103/PhysRevB.105.205405$$DView published paper (Access to full text may be restricted)$$Hfree_for_read</backlink><backlink>$$Uhttps://doi.org/10.48550/arXiv.2112.07845$$DView paper in arXiv$$Hfree_for_read</backlink></links><search><creatorcontrib>Santacruz, Alex</creatorcontrib><creatorcontrib>Iglesias, Priscilla E</creatorcontrib><creatorcontrib>Carrillo-Bastos, Ramon</creatorcontrib><creatorcontrib>Mireles, Francisco</creatorcontrib><title>Valley-driven Zitterbewegung in Kekul\'e-distorted graphene</title><description>Phys. Rev. B 105, 205405, 2 May 2022 Graphene deposited on top of a Copper(111) substrate may develop a Y-shaped
Kekul\'e bond texture (Kekul\'e-Y), locking the momentum of its Dirac fermions
with its valley degree of freedom. As a consequence, the valley degeneracy of
its band structure is broken, generating an energy dispersion with two nested
Dirac cones with different Fermi velocities. In this work, we investigate the
dynamics of electronic wave packets in the Kekul\'e-Y superlattice. We show
that, as a result of the valley-momentum coupling, a valley-driven oscillatory
motion of the wave packets ({\it Zitterbewegung}) could appear, but with a
smaller frequency than the {\it Zitterbewegung} effect found pristine graphene.
This makes Kekul\'e-Y graphene a compelling candidate for experimental
observation of {\it Zitterbewegung} phenomenon in a two-dimensional system.</description><subject>Physics - Mesoscale and Nanoscale Physics</subject><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>GOX</sourceid><recordid>eNpjYJA0NNAzsTA1NdBPLKrILNMzMjQ00jMwtzAx5WSwDkvMyUmt1E0pyixLzVOIyiwpSS1KSi1PTS_NS1fIzFPwTs0uzYlRT9VNySwuyS8qSU1RSC9KLMhIzUvlYWBNS8wpTuWF0twM8m6uIc4eumBr4guKMnMTiyrjQdbFg60zJqwCAPZSNUU</recordid><startdate>20211214</startdate><enddate>20211214</enddate><creator>Santacruz, Alex</creator><creator>Iglesias, Priscilla E</creator><creator>Carrillo-Bastos, Ramon</creator><creator>Mireles, Francisco</creator><scope>GOX</scope></search><sort><creationdate>20211214</creationdate><title>Valley-driven Zitterbewegung in Kekul\'e-distorted graphene</title><author>Santacruz, Alex ; Iglesias, Priscilla E ; Carrillo-Bastos, Ramon ; Mireles, Francisco</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-arxiv_primary_2112_078453</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Physics - Mesoscale and Nanoscale Physics</topic><toplevel>online_resources</toplevel><creatorcontrib>Santacruz, Alex</creatorcontrib><creatorcontrib>Iglesias, Priscilla E</creatorcontrib><creatorcontrib>Carrillo-Bastos, Ramon</creatorcontrib><creatorcontrib>Mireles, Francisco</creatorcontrib><collection>arXiv.org</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Santacruz, Alex</au><au>Iglesias, Priscilla E</au><au>Carrillo-Bastos, Ramon</au><au>Mireles, Francisco</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Valley-driven Zitterbewegung in Kekul\'e-distorted graphene</atitle><date>2021-12-14</date><risdate>2021</risdate><abstract>Phys. Rev. B 105, 205405, 2 May 2022 Graphene deposited on top of a Copper(111) substrate may develop a Y-shaped
Kekul\'e bond texture (Kekul\'e-Y), locking the momentum of its Dirac fermions
with its valley degree of freedom. As a consequence, the valley degeneracy of
its band structure is broken, generating an energy dispersion with two nested
Dirac cones with different Fermi velocities. In this work, we investigate the
dynamics of electronic wave packets in the Kekul\'e-Y superlattice. We show
that, as a result of the valley-momentum coupling, a valley-driven oscillatory
motion of the wave packets ({\it Zitterbewegung}) could appear, but with a
smaller frequency than the {\it Zitterbewegung} effect found pristine graphene.
This makes Kekul\'e-Y graphene a compelling candidate for experimental
observation of {\it Zitterbewegung} phenomenon in a two-dimensional system.</abstract><doi>10.48550/arxiv.2112.07845</doi><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext_linktorsrc |
| identifier | DOI: 10.48550/arxiv.2112.07845 |
| ispartof | |
| issn | |
| language | eng |
| recordid | cdi_arxiv_primary_2112_07845 |
| source | arXiv.org |
| subjects | Physics - Mesoscale and Nanoscale Physics |
| title | Valley-driven Zitterbewegung in Kekul\'e-distorted graphene |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-25T17%3A45%3A18IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-arxiv_GOX&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Valley-driven%20Zitterbewegung%20in%20Kekul%5C'e-distorted%20graphene&rft.au=Santacruz,%20Alex&rft.date=2021-12-14&rft_id=info:doi/10.48550/arxiv.2112.07845&rft_dat=%3Carxiv_GOX%3E2112_07845%3C/arxiv_GOX%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |