Anomalies of a topologically ordered surface
Bulk insulators with strong spin orbit coupling exhibit metallic surface states possessing topological order protected by the time reversal symmetry. However, experiments show vulnerability of topological states to aging and impurities. Different studies show contrasting behavior of the Dirac states...
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| Veröffentlicht in: | Scientific reports 2015-06, Vol.5 (1), p.10260-10260, Article 10260 |
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| creator | Biswas, Deepnarayan Thakur, Sangeeta Ali, Khadiza Balakrishnan, Geetha Maiti, Kalobaran |
| description | Bulk insulators with strong spin orbit coupling exhibit metallic surface states possessing topological order protected by the time reversal symmetry. However, experiments show vulnerability of topological states to aging and impurities. Different studies show contrasting behavior of the Dirac states along with plethora of anomalies, which has become an outstanding problem in material science. Here, we probe the electronic structure of Bi
2
Se
3
employing high resolution photoemission spectroscopy and discover the dependence of the behavior of Dirac particles on surface terminations. The Dirac cone apex appears at different binding energies and exhibits contrasting shift on Bi and Se terminated surfaces with complex time dependence emerging from subtle adsorbed oxygen-surface atom interactions. These results uncover the surface states behavior of real systems and the dichotomy of topological and normal surface states important for device fabrication as well as realization of novel physics such as Majorana Fermions, magnetic monopole, etc. |
| doi_str_mv | 10.1038/srep10260 |
| format | Article |
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2
Se
3
employing high resolution photoemission spectroscopy and discover the dependence of the behavior of Dirac particles on surface terminations. The Dirac cone apex appears at different binding energies and exhibits contrasting shift on Bi and Se terminated surfaces with complex time dependence emerging from subtle adsorbed oxygen-surface atom interactions. These results uncover the surface states behavior of real systems and the dichotomy of topological and normal surface states important for device fabrication as well as realization of novel physics such as Majorana Fermions, magnetic monopole, etc.</description><identifier>ISSN: 2045-2322</identifier><identifier>EISSN: 2045-2322</identifier><identifier>DOI: 10.1038/srep10260</identifier><identifier>PMID: 26041405</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>140/146 ; 639/301/119/2792 ; 639/638/542/971 ; 639/766/1130/2798 ; 639/766/119/544 ; Aging ; Energy ; Experiments ; Fabrication ; Humanities and Social Sciences ; Impurities ; multidisciplinary ; Physics ; Science ; Spectroscopy</subject><ispartof>Scientific reports, 2015-06, Vol.5 (1), p.10260-10260, Article 10260</ispartof><rights>The Author(s) 2015</rights><rights>Copyright Nature Publishing Group Jun 2015</rights><rights>Copyright © 2015, Macmillan Publishers Limited 2015 Macmillan Publishers Limited</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c438t-522a11e744316e65a4ea0a8e88a2aa9f536f7a5e8075449c9c2188cb6f90aded3</citedby><cites>FETCH-LOGICAL-c438t-522a11e744316e65a4ea0a8e88a2aa9f536f7a5e8075449c9c2188cb6f90aded3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4455236/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4455236/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,723,776,780,860,881,27901,27902,41096,42165,51551,53766,53768</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/26041405$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Biswas, Deepnarayan</creatorcontrib><creatorcontrib>Thakur, Sangeeta</creatorcontrib><creatorcontrib>Ali, Khadiza</creatorcontrib><creatorcontrib>Balakrishnan, Geetha</creatorcontrib><creatorcontrib>Maiti, Kalobaran</creatorcontrib><title>Anomalies of a topologically ordered surface</title><title>Scientific reports</title><addtitle>Sci Rep</addtitle><addtitle>Sci Rep</addtitle><description>Bulk insulators with strong spin orbit coupling exhibit metallic surface states possessing topological order protected by the time reversal symmetry. However, experiments show vulnerability of topological states to aging and impurities. Different studies show contrasting behavior of the Dirac states along with plethora of anomalies, which has become an outstanding problem in material science. Here, we probe the electronic structure of Bi
2
Se
3
employing high resolution photoemission spectroscopy and discover the dependence of the behavior of Dirac particles on surface terminations. The Dirac cone apex appears at different binding energies and exhibits contrasting shift on Bi and Se terminated surfaces with complex time dependence emerging from subtle adsorbed oxygen-surface atom interactions. 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2
Se
3
employing high resolution photoemission spectroscopy and discover the dependence of the behavior of Dirac particles on surface terminations. The Dirac cone apex appears at different binding energies and exhibits contrasting shift on Bi and Se terminated surfaces with complex time dependence emerging from subtle adsorbed oxygen-surface atom interactions. These results uncover the surface states behavior of real systems and the dichotomy of topological and normal surface states important for device fabrication as well as realization of novel physics such as Majorana Fermions, magnetic monopole, etc.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>26041405</pmid><doi>10.1038/srep10260</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | 140/146 639/301/119/2792 639/638/542/971 639/766/1130/2798 639/766/119/544 Aging Energy Experiments Fabrication Humanities and Social Sciences Impurities multidisciplinary Physics Science Spectroscopy |
| title | Anomalies of a topologically ordered surface |
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