Coherent nonlinear electromagnetic response in twisted bilayer and few-layer graphene
Abstract The phenomenon of Rabi oscillations far from resonance is described in bilayer and few-layer graphene. These oscillations in the population and polarization at the Dirac point in n-layer graphene are seen in the nth harmonic term in the external driving frequency. The underlying reason behi...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
KUMAR, VIPIN [verfasserIn] |
|---|
| Format: |
Artikel |
|---|---|
| Sprache: |
Englisch |
| Erschienen: |
2014 |
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| Schlagwörter: |
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| Anmerkung: |
© Indian Academy of Sciences 2014 |
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| Übergeordnetes Werk: |
Enthalten in: Pramāna - Springer India, 1973, 83(2014), 4 vom: 27. Sept., Seite 597-617 |
|---|---|
| Übergeordnetes Werk: |
volume:83 ; year:2014 ; number:4 ; day:27 ; month:09 ; pages:597-617 |
| Links: |
|---|
| DOI / URN: |
10.1007/s12043-014-0808-4 |
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OLC2076064141 |
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| 520 | |a Abstract The phenomenon of Rabi oscillations far from resonance is described in bilayer and few-layer graphene. These oscillations in the population and polarization at the Dirac point in n-layer graphene are seen in the nth harmonic term in the external driving frequency. The underlying reason behind these oscillations is attributable to the pseudospin degree of freedom possessed by all these systems. Conventional Rabi oscillations, which occur only near resonance, are seen in multiple harmonics in multilayer graphene. However, the experimentally measurable current density exhibits anomalous behaviour only in the first harmonic in all the graphene systems. A fully numerical solution of the optical Bloch equations is in complete agreement with the analytical results, thereby justifying the approximation schemes used in the latter. The same phenomena are also described in twisted bilayer graphene with and without an electric potential difference between the layers. It is found that the anomalous Rabi frequency is strongly dependent on twist angle for weak applied fields – a feature absent in single-layer graphene, whereas the conventional Rabi frequency is relatively independent of the twist angle. | ||
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10.1007/s12043-014-0808-4 doi (DE-627)OLC2076064141 (DE-He213)s12043-014-0808-4-p DE-627 ger DE-627 rakwb eng 530 VZ KUMAR, VIPIN verfasserin aut Coherent nonlinear electromagnetic response in twisted bilayer and few-layer graphene 2014 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Indian Academy of Sciences 2014 Abstract The phenomenon of Rabi oscillations far from resonance is described in bilayer and few-layer graphene. These oscillations in the population and polarization at the Dirac point in n-layer graphene are seen in the nth harmonic term in the external driving frequency. The underlying reason behind these oscillations is attributable to the pseudospin degree of freedom possessed by all these systems. Conventional Rabi oscillations, which occur only near resonance, are seen in multiple harmonics in multilayer graphene. However, the experimentally measurable current density exhibits anomalous behaviour only in the first harmonic in all the graphene systems. A fully numerical solution of the optical Bloch equations is in complete agreement with the analytical results, thereby justifying the approximation schemes used in the latter. The same phenomena are also described in twisted bilayer graphene with and without an electric potential difference between the layers. It is found that the anomalous Rabi frequency is strongly dependent on twist angle for weak applied fields – a feature absent in single-layer graphene, whereas the conventional Rabi frequency is relatively independent of the twist angle. Graphene bilayer graphene multilayer graphene non-linear phenomenon Rabi oscillations KUMAR, UPENDRA aut SETLUR, GIRISH S. aut Enthalten in Pramāna Springer India, 1973 83(2014), 4 vom: 27. Sept., Seite 597-617 (DE-627)129403342 (DE-600)186949-8 (DE-576)014785102 0304-4289 nnns volume:83 year:2014 number:4 day:27 month:09 pages:597-617 https://doi.org/10.1007/s12043-014-0808-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_70 AR 83 2014 4 27 09 597-617 |
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10.1007/s12043-014-0808-4 doi (DE-627)OLC2076064141 (DE-He213)s12043-014-0808-4-p DE-627 ger DE-627 rakwb eng 530 VZ KUMAR, VIPIN verfasserin aut Coherent nonlinear electromagnetic response in twisted bilayer and few-layer graphene 2014 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Indian Academy of Sciences 2014 Abstract The phenomenon of Rabi oscillations far from resonance is described in bilayer and few-layer graphene. These oscillations in the population and polarization at the Dirac point in n-layer graphene are seen in the nth harmonic term in the external driving frequency. The underlying reason behind these oscillations is attributable to the pseudospin degree of freedom possessed by all these systems. Conventional Rabi oscillations, which occur only near resonance, are seen in multiple harmonics in multilayer graphene. However, the experimentally measurable current density exhibits anomalous behaviour only in the first harmonic in all the graphene systems. A fully numerical solution of the optical Bloch equations is in complete agreement with the analytical results, thereby justifying the approximation schemes used in the latter. The same phenomena are also described in twisted bilayer graphene with and without an electric potential difference between the layers. It is found that the anomalous Rabi frequency is strongly dependent on twist angle for weak applied fields – a feature absent in single-layer graphene, whereas the conventional Rabi frequency is relatively independent of the twist angle. Graphene bilayer graphene multilayer graphene non-linear phenomenon Rabi oscillations KUMAR, UPENDRA aut SETLUR, GIRISH S. aut Enthalten in Pramāna Springer India, 1973 83(2014), 4 vom: 27. Sept., Seite 597-617 (DE-627)129403342 (DE-600)186949-8 (DE-576)014785102 0304-4289 nnns volume:83 year:2014 number:4 day:27 month:09 pages:597-617 https://doi.org/10.1007/s12043-014-0808-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_70 AR 83 2014 4 27 09 597-617 |
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10.1007/s12043-014-0808-4 doi (DE-627)OLC2076064141 (DE-He213)s12043-014-0808-4-p DE-627 ger DE-627 rakwb eng 530 VZ KUMAR, VIPIN verfasserin aut Coherent nonlinear electromagnetic response in twisted bilayer and few-layer graphene 2014 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Indian Academy of Sciences 2014 Abstract The phenomenon of Rabi oscillations far from resonance is described in bilayer and few-layer graphene. These oscillations in the population and polarization at the Dirac point in n-layer graphene are seen in the nth harmonic term in the external driving frequency. The underlying reason behind these oscillations is attributable to the pseudospin degree of freedom possessed by all these systems. Conventional Rabi oscillations, which occur only near resonance, are seen in multiple harmonics in multilayer graphene. However, the experimentally measurable current density exhibits anomalous behaviour only in the first harmonic in all the graphene systems. A fully numerical solution of the optical Bloch equations is in complete agreement with the analytical results, thereby justifying the approximation schemes used in the latter. The same phenomena are also described in twisted bilayer graphene with and without an electric potential difference between the layers. It is found that the anomalous Rabi frequency is strongly dependent on twist angle for weak applied fields – a feature absent in single-layer graphene, whereas the conventional Rabi frequency is relatively independent of the twist angle. Graphene bilayer graphene multilayer graphene non-linear phenomenon Rabi oscillations KUMAR, UPENDRA aut SETLUR, GIRISH S. aut Enthalten in Pramāna Springer India, 1973 83(2014), 4 vom: 27. Sept., Seite 597-617 (DE-627)129403342 (DE-600)186949-8 (DE-576)014785102 0304-4289 nnns volume:83 year:2014 number:4 day:27 month:09 pages:597-617 https://doi.org/10.1007/s12043-014-0808-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_70 AR 83 2014 4 27 09 597-617 |
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10.1007/s12043-014-0808-4 doi (DE-627)OLC2076064141 (DE-He213)s12043-014-0808-4-p DE-627 ger DE-627 rakwb eng 530 VZ KUMAR, VIPIN verfasserin aut Coherent nonlinear electromagnetic response in twisted bilayer and few-layer graphene 2014 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Indian Academy of Sciences 2014 Abstract The phenomenon of Rabi oscillations far from resonance is described in bilayer and few-layer graphene. These oscillations in the population and polarization at the Dirac point in n-layer graphene are seen in the nth harmonic term in the external driving frequency. The underlying reason behind these oscillations is attributable to the pseudospin degree of freedom possessed by all these systems. Conventional Rabi oscillations, which occur only near resonance, are seen in multiple harmonics in multilayer graphene. However, the experimentally measurable current density exhibits anomalous behaviour only in the first harmonic in all the graphene systems. A fully numerical solution of the optical Bloch equations is in complete agreement with the analytical results, thereby justifying the approximation schemes used in the latter. The same phenomena are also described in twisted bilayer graphene with and without an electric potential difference between the layers. It is found that the anomalous Rabi frequency is strongly dependent on twist angle for weak applied fields – a feature absent in single-layer graphene, whereas the conventional Rabi frequency is relatively independent of the twist angle. Graphene bilayer graphene multilayer graphene non-linear phenomenon Rabi oscillations KUMAR, UPENDRA aut SETLUR, GIRISH S. aut Enthalten in Pramāna Springer India, 1973 83(2014), 4 vom: 27. Sept., Seite 597-617 (DE-627)129403342 (DE-600)186949-8 (DE-576)014785102 0304-4289 nnns volume:83 year:2014 number:4 day:27 month:09 pages:597-617 https://doi.org/10.1007/s12043-014-0808-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_70 AR 83 2014 4 27 09 597-617 |
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10.1007/s12043-014-0808-4 doi (DE-627)OLC2076064141 (DE-He213)s12043-014-0808-4-p DE-627 ger DE-627 rakwb eng 530 VZ KUMAR, VIPIN verfasserin aut Coherent nonlinear electromagnetic response in twisted bilayer and few-layer graphene 2014 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Indian Academy of Sciences 2014 Abstract The phenomenon of Rabi oscillations far from resonance is described in bilayer and few-layer graphene. These oscillations in the population and polarization at the Dirac point in n-layer graphene are seen in the nth harmonic term in the external driving frequency. The underlying reason behind these oscillations is attributable to the pseudospin degree of freedom possessed by all these systems. Conventional Rabi oscillations, which occur only near resonance, are seen in multiple harmonics in multilayer graphene. However, the experimentally measurable current density exhibits anomalous behaviour only in the first harmonic in all the graphene systems. A fully numerical solution of the optical Bloch equations is in complete agreement with the analytical results, thereby justifying the approximation schemes used in the latter. The same phenomena are also described in twisted bilayer graphene with and without an electric potential difference between the layers. It is found that the anomalous Rabi frequency is strongly dependent on twist angle for weak applied fields – a feature absent in single-layer graphene, whereas the conventional Rabi frequency is relatively independent of the twist angle. Graphene bilayer graphene multilayer graphene non-linear phenomenon Rabi oscillations KUMAR, UPENDRA aut SETLUR, GIRISH S. aut Enthalten in Pramāna Springer India, 1973 83(2014), 4 vom: 27. Sept., Seite 597-617 (DE-627)129403342 (DE-600)186949-8 (DE-576)014785102 0304-4289 nnns volume:83 year:2014 number:4 day:27 month:09 pages:597-617 https://doi.org/10.1007/s12043-014-0808-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_70 AR 83 2014 4 27 09 597-617 |
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Abstract The phenomenon of Rabi oscillations far from resonance is described in bilayer and few-layer graphene. These oscillations in the population and polarization at the Dirac point in n-layer graphene are seen in the nth harmonic term in the external driving frequency. The underlying reason behind these oscillations is attributable to the pseudospin degree of freedom possessed by all these systems. Conventional Rabi oscillations, which occur only near resonance, are seen in multiple harmonics in multilayer graphene. However, the experimentally measurable current density exhibits anomalous behaviour only in the first harmonic in all the graphene systems. A fully numerical solution of the optical Bloch equations is in complete agreement with the analytical results, thereby justifying the approximation schemes used in the latter. The same phenomena are also described in twisted bilayer graphene with and without an electric potential difference between the layers. It is found that the anomalous Rabi frequency is strongly dependent on twist angle for weak applied fields – a feature absent in single-layer graphene, whereas the conventional Rabi frequency is relatively independent of the twist angle. © Indian Academy of Sciences 2014 |
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Abstract The phenomenon of Rabi oscillations far from resonance is described in bilayer and few-layer graphene. These oscillations in the population and polarization at the Dirac point in n-layer graphene are seen in the nth harmonic term in the external driving frequency. The underlying reason behind these oscillations is attributable to the pseudospin degree of freedom possessed by all these systems. Conventional Rabi oscillations, which occur only near resonance, are seen in multiple harmonics in multilayer graphene. However, the experimentally measurable current density exhibits anomalous behaviour only in the first harmonic in all the graphene systems. A fully numerical solution of the optical Bloch equations is in complete agreement with the analytical results, thereby justifying the approximation schemes used in the latter. The same phenomena are also described in twisted bilayer graphene with and without an electric potential difference between the layers. It is found that the anomalous Rabi frequency is strongly dependent on twist angle for weak applied fields – a feature absent in single-layer graphene, whereas the conventional Rabi frequency is relatively independent of the twist angle. © Indian Academy of Sciences 2014 |
| abstract_unstemmed |
Abstract The phenomenon of Rabi oscillations far from resonance is described in bilayer and few-layer graphene. These oscillations in the population and polarization at the Dirac point in n-layer graphene are seen in the nth harmonic term in the external driving frequency. The underlying reason behind these oscillations is attributable to the pseudospin degree of freedom possessed by all these systems. Conventional Rabi oscillations, which occur only near resonance, are seen in multiple harmonics in multilayer graphene. However, the experimentally measurable current density exhibits anomalous behaviour only in the first harmonic in all the graphene systems. A fully numerical solution of the optical Bloch equations is in complete agreement with the analytical results, thereby justifying the approximation schemes used in the latter. The same phenomena are also described in twisted bilayer graphene with and without an electric potential difference between the layers. It is found that the anomalous Rabi frequency is strongly dependent on twist angle for weak applied fields – a feature absent in single-layer graphene, whereas the conventional Rabi frequency is relatively independent of the twist angle. © Indian Academy of Sciences 2014 |
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<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">OLC2076064141</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20230402043039.0</controlfield><controlfield tag="007">tu</controlfield><controlfield tag="008">200820s2014 xx ||||| 00| ||eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1007/s12043-014-0808-4</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)OLC2076064141</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-He213)s12043-014-0808-4-p</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">530</subfield><subfield code="q">VZ</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">KUMAR, VIPIN</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Coherent nonlinear electromagnetic response in twisted bilayer and few-layer graphene</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2014</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">ohne Hilfsmittel zu benutzen</subfield><subfield code="b">n</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Band</subfield><subfield code="b">nc</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="500" ind1=" " ind2=" "><subfield code="a">© Indian Academy of Sciences 2014</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Abstract The phenomenon of Rabi oscillations far from resonance is described in bilayer and few-layer graphene. 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