Intraband effects in excitonic second-harmonic generation
A theory for the nonlinear excitonic optical response of semiconductors is developed. By adopting the length gauge, intraband effects are rigorously taken into account. We show that the second-order nonlinear response mixing intra- and interband transitions can be expressed in terms of generalized d...
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| Veröffentlicht in: | Physical review. B 2015-12, Vol.92 (23), Article 235432 |
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| container_title | Physical review. B |
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| creator | Pedersen, Thomas Garm |
| description | A theory for the nonlinear excitonic optical response of semiconductors is developed. By adopting the length gauge, intraband effects are rigorously taken into account. We show that the second-order nonlinear response mixing intra- and interband transitions can be expressed in terms of generalized derivatives of the exciton Green's function. The theory is applied to hexagonal boron-nitride monolayers. For both the linear and nonlinear response, a dramatic influence of excitons is found. Hence, new discrete resonances appear as well as pronounced changes in the continuum spectrum. |
| doi_str_mv | 10.1103/PhysRevB.92.235432 |
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By adopting the length gauge, intraband effects are rigorously taken into account. We show that the second-order nonlinear response mixing intra- and interband transitions can be expressed in terms of generalized derivatives of the exciton Green's function. The theory is applied to hexagonal boron-nitride monolayers. For both the linear and nonlinear response, a dramatic influence of excitons is found. Hence, new discrete resonances appear as well as pronounced changes in the continuum spectrum.</description><identifier>ISSN: 1098-0121</identifier><identifier>ISSN: 2469-9950</identifier><identifier>EISSN: 1550-235X</identifier><identifier>EISSN: 2469-9969</identifier><identifier>DOI: 10.1103/PhysRevB.92.235432</identifier><language>eng</language><subject>Boron ; Condensed matter ; Continuums ; Derivatives ; Gages ; Monolayers ; Nonlinearity ; Semiconductors</subject><ispartof>Physical review. 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Hence, new discrete resonances appear as well as pronounced changes in the continuum spectrum.</description><subject>Boron</subject><subject>Condensed matter</subject><subject>Continuums</subject><subject>Derivatives</subject><subject>Gages</subject><subject>Monolayers</subject><subject>Nonlinearity</subject><subject>Semiconductors</subject><issn>1098-0121</issn><issn>2469-9950</issn><issn>1550-235X</issn><issn>2469-9969</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNo1kM1KAzEYRYMoWKsv4GqWbqbmd5JvqcWfQkERBXchk3yxI22mJlOxb2-1urr3wuEuDiHnjE4Yo-LycbEtT_h5PQE-4UJJwQ_IiClF6916Pdx1CqamjLNjclLKO6VMguQjArM0ZNe6FCqMEf1Qqi5V-OW7oU-drwr6PoV64fLqd79hwuyGrk-n5Ci6ZcGzvxyTl9ub5-l9PX-4m02v5rUXshnqEEwEKlpstNTBt5obCi0CiKBRCWMCR9Nw6qmIWlPJZNAAoBiDSCFEMSYX-9917j82WAa76orH5dIl7DfFMqOUAKlB7lC-R33uS8kY7Tp3K5e3llH748n-e7LA7d6T-AaCY1y7</recordid><startdate>20151217</startdate><enddate>20151217</enddate><creator>Pedersen, Thomas Garm</creator><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>H8D</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20151217</creationdate><title>Intraband effects in excitonic second-harmonic generation</title><author>Pedersen, Thomas Garm</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c346t-dd8f903be6747dcb72809be993d7e5388d2e8620c03f770414d79995119f09df3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Boron</topic><topic>Condensed matter</topic><topic>Continuums</topic><topic>Derivatives</topic><topic>Gages</topic><topic>Monolayers</topic><topic>Nonlinearity</topic><topic>Semiconductors</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Pedersen, Thomas Garm</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physical review. B</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Pedersen, Thomas Garm</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Intraband effects in excitonic second-harmonic generation</atitle><jtitle>Physical review. B</jtitle><date>2015-12-17</date><risdate>2015</risdate><volume>92</volume><issue>23</issue><artnum>235432</artnum><issn>1098-0121</issn><issn>2469-9950</issn><eissn>1550-235X</eissn><eissn>2469-9969</eissn><abstract>A theory for the nonlinear excitonic optical response of semiconductors is developed. By adopting the length gauge, intraband effects are rigorously taken into account. We show that the second-order nonlinear response mixing intra- and interband transitions can be expressed in terms of generalized derivatives of the exciton Green's function. The theory is applied to hexagonal boron-nitride monolayers. For both the linear and nonlinear response, a dramatic influence of excitons is found. Hence, new discrete resonances appear as well as pronounced changes in the continuum spectrum.</abstract><doi>10.1103/PhysRevB.92.235432</doi></addata></record> |
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| ispartof | Physical review. B, 2015-12, Vol.92 (23), Article 235432 |
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| language | eng |
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| source | American Physical Society Journals |
| subjects | Boron Condensed matter Continuums Derivatives Gages Monolayers Nonlinearity Semiconductors |
| title | Intraband effects in excitonic second-harmonic generation |
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