Publication
Quantum theory of plasmon-phonon scattering in multisubband systems
| authorProfile.email | biblioteca@isel.pt | |
| datacite.subject.fos | Ciências Naturais::Ciências Físicas | |
| dc.contributor.author | Ribeiro, Sofia | |
| dc.contributor.author | Terças, Hugo | |
| dc.date.accessioned | 2026-01-05T09:43:51Z | |
| dc.date.available | 2026-01-05T09:43:51Z | |
| dc.date.issued | 2026-01-09 | |
| dc.description.abstract | We present a first-principles quantum theory of a critical yet unexplored energy-loss pathway in low-dimensional semiconductors: resonant second-order scattering between multisubband (MSB) plasmons mediated by longitudinal optical phonons. Specifically, we demonstrate how a high-energy MSB plasmon decays into a lower-energy plasmon state via phonon emission-a fundamental process governing energy relaxation and decoherence in quantum wells. Through exact diagonalization of the coupled plasmon-phonon system and derivation of an effective Hamiltonian, we identify density-tunable resonance conditions that maximize scattering efficiency. Our numerical simulations for GaInAs quantum wells reveal scattering rates ( similar to 10ns-1) competitive with radiative losses, with carrier density acting as a control knob. These results resolve the interplay of collective electronic and vibrational modes in confined systems, providing design principles to mitigate losses in infrared photodetectors, quantum cascade lasers, and plasmon-based quantum devices. | eng |
| dc.identifier.citation | Ribeiro, S. & Terças, H. (2026). Quantum theory of plasmon-phonon scattering in multisubband systems. Journal of Physics: Condensed Matter, 38(1), 1-14. https://doi.org/10.1088/1361-648X/ae2b1b | |
| dc.identifier.doi | 10.1088/1361-648X/ae2b1b | |
| dc.identifier.eissn | 1361-648X | |
| dc.identifier.issn | 0953-8984 | |
| dc.identifier.uri | http://hdl.handle.net/10400.21/22425 | |
| dc.language.iso | eng | |
| dc.peerreviewed | yes | |
| dc.publisher | IOP Publishing | |
| dc.relation.hasversion | https://iopscience.iop.org/article/10.1088/1361-648X/ae2b1b | |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | |
| dc.subject | Multisubband plasmons | |
| dc.subject | Phonons | |
| dc.subject | Scattering processes | |
| dc.title | Quantum theory of plasmon-phonon scattering in multisubband systems | eng |
| dc.type | research article | |
| dspace.entity.type | Publication | |
| oaire.citation.endPage | 14 | |
| oaire.citation.issue | 1 | |
| oaire.citation.startPage | 1 | |
| oaire.citation.title | Journal of Physics: Condensed Matter | |
| oaire.citation.volume | 38 | |
| oaire.version | http://purl.org/coar/version/c_be7fb7dd8ff6fe43 | |
| person.familyName | Ribeiro | |
| person.familyName | Terças | |
| person.givenName | Sofia | |
| person.givenName | Hugo | |
| person.identifier.ciencia-id | C71E-095B-5526 | |
| person.identifier.orcid | 0000-0002-8234-416X | |
| person.identifier.orcid | 0000-0003-2826-4377 | |
| person.identifier.scopus-author-id | 25422891900 | |
| relation.isAuthorOfPublication | 7d8c412e-278e-4988-9d30-b5078cdfcae7 | |
| relation.isAuthorOfPublication | 2f114220-838c-4bf4-827d-88fc1afcf069 | |
| relation.isAuthorOfPublication.latestForDiscovery | 7d8c412e-278e-4988-9d30-b5078cdfcae7 |
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