Raman response of topologically protected surface states in sub‐micrometric Pb 0.77 Sn 0.23 Se flakes
The Raman spectra of the topological crystalline insulator Pb 0.77 Sn 0.23 Se flakes of thickness below 150 nm show the presence of plasma enhanced phonons related to topologically protected surface electronic states. The Fröhlich interaction between the topologically protected surface Dirac electro...
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| Veröffentlicht in: | Journal of Raman spectroscopy 2020-12, Vol.51 (12), p.2489-2495 |
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| container_title | Journal of Raman spectroscopy |
| container_volume | 51 |
| creator | Mehdipour, Sanaz López‐Diaz, David Velázquez, María Mercedes Hidalgo, Pedro Méndez, Bianchi Luna, Mónica Bellani, Vittorio Amado, Mario Balakrishnan, Geetha Diez, Enrique |
| description | The Raman spectra of the topological crystalline insulator Pb
0.77
Sn
0.23
Se flakes of thickness below 150 nm show the presence of plasma enhanced phonons related to topologically protected surface electronic states. The Fröhlich interaction between the topologically protected surface Dirac electrons and the phonons activates the forbidden phonons near the center of the Brillouin zone. An overtone is observed at a higher wavenumber, with a resonant response with temperature, related to an enhancement of the long‐range coupling between the topologically protected surface electrons and phonons. |
| doi_str_mv | 10.1002/jrs.5998 |
| format | Article |
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0.77
Sn
0.23
Se flakes of thickness below 150 nm show the presence of plasma enhanced phonons related to topologically protected surface electronic states. The Fröhlich interaction between the topologically protected surface Dirac electrons and the phonons activates the forbidden phonons near the center of the Brillouin zone. An overtone is observed at a higher wavenumber, with a resonant response with temperature, related to an enhancement of the long‐range coupling between the topologically protected surface electrons and phonons.</description><identifier>ISSN: 0377-0486</identifier><identifier>EISSN: 1097-4555</identifier><identifier>DOI: 10.1002/jrs.5998</identifier><language>eng</language><ispartof>Journal of Raman spectroscopy, 2020-12, Vol.51 (12), p.2489-2495</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c728-f847beb2e12178f785ef0629ddac35adb6a54b59b9640a3f50fa13ca364be1783</citedby><cites>FETCH-LOGICAL-c728-f847beb2e12178f785ef0629ddac35adb6a54b59b9640a3f50fa13ca364be1783</cites><orcidid>0000-0002-6231-6233 ; 0000-0003-2746-8204 ; 0000-0001-7964-4148 ; 0000-0002-5890-1149</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27922,27923</link.rule.ids></links><search><creatorcontrib>Mehdipour, Sanaz</creatorcontrib><creatorcontrib>López‐Diaz, David</creatorcontrib><creatorcontrib>Velázquez, María Mercedes</creatorcontrib><creatorcontrib>Hidalgo, Pedro</creatorcontrib><creatorcontrib>Méndez, Bianchi</creatorcontrib><creatorcontrib>Luna, Mónica</creatorcontrib><creatorcontrib>Bellani, Vittorio</creatorcontrib><creatorcontrib>Amado, Mario</creatorcontrib><creatorcontrib>Balakrishnan, Geetha</creatorcontrib><creatorcontrib>Diez, Enrique</creatorcontrib><title>Raman response of topologically protected surface states in sub‐micrometric Pb 0.77 Sn 0.23 Se flakes</title><title>Journal of Raman spectroscopy</title><description>The Raman spectra of the topological crystalline insulator Pb
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Se flakes of thickness below 150 nm show the presence of plasma enhanced phonons related to topologically protected surface electronic states. The Fröhlich interaction between the topologically protected surface Dirac electrons and the phonons activates the forbidden phonons near the center of the Brillouin zone. An overtone is observed at a higher wavenumber, with a resonant response with temperature, related to an enhancement of the long‐range coupling between the topologically protected surface electrons and phonons.</description><issn>0377-0486</issn><issn>1097-4555</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNotkM1KxDAUhYMoOI6Cj5Clm443TdM0Sxn8gwHFmX25SW-Gjm1TkrqYnY_gM_okVnT1wYFzOHyMXQtYCYD89hDTShlTnbCFAKOzQil1yhYgtc6gqMpzdpHSAQCMKcWC7d-wx4FHSmMYEvHg-RTG0IV967DrjnyMYSI3UcPTR_ToiKcJJ0q8HebEfn9-9a2Loacpto6_Wg4rrfl2mJlLviXuO3yndMnOPHaJrv65ZLuH-936Kdu8PD6v7zaZ03mV-arQlmxOIhe68rpS5KHMTdOgkwobW6IqrDLWlAWg9Ao8CulQloWluSGX7OZvdr6UUiRfj7HtMR5rAfWvn3r2U__6kT-QWVmz</recordid><startdate>202012</startdate><enddate>202012</enddate><creator>Mehdipour, Sanaz</creator><creator>López‐Diaz, David</creator><creator>Velázquez, María Mercedes</creator><creator>Hidalgo, Pedro</creator><creator>Méndez, Bianchi</creator><creator>Luna, Mónica</creator><creator>Bellani, Vittorio</creator><creator>Amado, Mario</creator><creator>Balakrishnan, Geetha</creator><creator>Diez, Enrique</creator><scope>AAYXX</scope><scope>CITATION</scope><orcidid>https://orcid.org/0000-0002-6231-6233</orcidid><orcidid>https://orcid.org/0000-0003-2746-8204</orcidid><orcidid>https://orcid.org/0000-0001-7964-4148</orcidid><orcidid>https://orcid.org/0000-0002-5890-1149</orcidid></search><sort><creationdate>202012</creationdate><title>Raman response of topologically protected surface states in sub‐micrometric Pb 0.77 Sn 0.23 Se flakes</title><author>Mehdipour, Sanaz ; López‐Diaz, David ; Velázquez, María Mercedes ; Hidalgo, Pedro ; Méndez, Bianchi ; Luna, Mónica ; Bellani, Vittorio ; Amado, Mario ; Balakrishnan, Geetha ; Diez, Enrique</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c728-f847beb2e12178f785ef0629ddac35adb6a54b59b9640a3f50fa13ca364be1783</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Mehdipour, Sanaz</creatorcontrib><creatorcontrib>López‐Diaz, David</creatorcontrib><creatorcontrib>Velázquez, María Mercedes</creatorcontrib><creatorcontrib>Hidalgo, Pedro</creatorcontrib><creatorcontrib>Méndez, Bianchi</creatorcontrib><creatorcontrib>Luna, Mónica</creatorcontrib><creatorcontrib>Bellani, Vittorio</creatorcontrib><creatorcontrib>Amado, Mario</creatorcontrib><creatorcontrib>Balakrishnan, Geetha</creatorcontrib><creatorcontrib>Diez, Enrique</creatorcontrib><collection>CrossRef</collection><jtitle>Journal of Raman spectroscopy</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Mehdipour, Sanaz</au><au>López‐Diaz, David</au><au>Velázquez, María Mercedes</au><au>Hidalgo, Pedro</au><au>Méndez, Bianchi</au><au>Luna, Mónica</au><au>Bellani, Vittorio</au><au>Amado, Mario</au><au>Balakrishnan, Geetha</au><au>Diez, Enrique</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Raman response of topologically protected surface states in sub‐micrometric Pb 0.77 Sn 0.23 Se flakes</atitle><jtitle>Journal of Raman spectroscopy</jtitle><date>2020-12</date><risdate>2020</risdate><volume>51</volume><issue>12</issue><spage>2489</spage><epage>2495</epage><pages>2489-2495</pages><issn>0377-0486</issn><eissn>1097-4555</eissn><abstract>The Raman spectra of the topological crystalline insulator Pb
0.77
Sn
0.23
Se flakes of thickness below 150 nm show the presence of plasma enhanced phonons related to topologically protected surface electronic states. The Fröhlich interaction between the topologically protected surface Dirac electrons and the phonons activates the forbidden phonons near the center of the Brillouin zone. An overtone is observed at a higher wavenumber, with a resonant response with temperature, related to an enhancement of the long‐range coupling between the topologically protected surface electrons and phonons.</abstract><doi>10.1002/jrs.5998</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0002-6231-6233</orcidid><orcidid>https://orcid.org/0000-0003-2746-8204</orcidid><orcidid>https://orcid.org/0000-0001-7964-4148</orcidid><orcidid>https://orcid.org/0000-0002-5890-1149</orcidid></addata></record> |
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| title | Raman response of topologically protected surface states in sub‐micrometric Pb 0.77 Sn 0.23 Se flakes |
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