dc.contributor.author | Hartmann, RR | |
dc.contributor.author | Portnoi, ME | |
dc.date.accessioned | 2020-12-03T11:17:58Z | |
dc.date.issued | 2020-11-30 | |
dc.description.abstract | The double-well problem for the two-dimensional Dirac equation is solved for a family of quasi-one-dimensional potentials in terms of confluent Heun functions. We demonstrate that for a double well separated by a barrier, both the energy level splitting associated with the wavefunction overlap of well states, and the gap size of the avoided crossings associated with well and barrier state repulsion, can be controlled via the parameters of the potential. The transitions between the two states comprising a doublet, as well as transitions across the pseudo-gaps are strongly allowed, highly anisotropic, and for realistic graphene devices can be tuned to fall within the highly desirable terahertz frequency range. | en_GB |
dc.description.sponsorship | European Union Horizon 2020 | en_GB |
dc.description.sponsorship | URCO | en_GB |
dc.description.sponsorship | Ministry of Science and Higher Education of the Russian Federation, Goszadanie | en_GB |
dc.identifier.citation | Vol. 102 (5), article 052229 | en_GB |
dc.identifier.doi | 10.1103/PhysRevA.102.052229 | |
dc.identifier.grantnumber | H2020-MSCA-RISE-823878 | en_GB |
dc.identifier.grantnumber | 71 F U 3TAY18- 3TAY19 | en_GB |
dc.identifier.grantnumber | 2019-1246 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10871/123889 | |
dc.language.iso | en | en_GB |
dc.publisher | American Physical Society | en_GB |
dc.rights | © 2020 American Physical Society | en_GB |
dc.title | Guided modes and terahertz transitions for two-dimensional Dirac fermions in a smooth double-well potential | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2020-12-03T11:17:58Z | |
dc.description | This is the final version. Available from the American Physical Society via the DOI in this record | en_GB |
dc.identifier.eissn | 1094-1622 | |
dc.identifier.journal | Physical Review A | en_GB |
dc.rights.uri | http://www.rioxx.net/licenses/all-rights-reserved | en_GB |
dcterms.dateAccepted | 2020-11-09 | |
rioxxterms.version | VoR | en_GB |
rioxxterms.licenseref.startdate | 2020-11-30 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2020-12-03T11:14:35Z | |
refterms.versionFCD | VoR | |
refterms.dateFOA | 2020-12-03T11:18:04Z | |
refterms.panel | B | en_GB |