DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, Dongsung T. | ko |
dc.contributor.author | Kim, Uhjin | ko |
dc.contributor.author | Kim, Dongkun | ko |
dc.contributor.author | Jung, Hwanchul | ko |
dc.contributor.author | Choi, Juho | ko |
dc.contributor.author | Han, Cheolhee | ko |
dc.contributor.author | Chung, Yunchul | ko |
dc.contributor.author | Sim, Heung-Sun | ko |
dc.contributor.author | Umansky, V | ko |
dc.contributor.author | Choi, Hyoungsoon | ko |
dc.contributor.author | Choi, Hyung Kook | ko |
dc.date.accessioned | 2021-07-20T01:30:09Z | - |
dc.date.available | 2021-07-20T01:30:09Z | - |
dc.date.created | 2021-07-19 | - |
dc.date.created | 2021-07-19 | - |
dc.date.created | 2021-07-19 | - |
dc.date.created | 2021-07-19 | - |
dc.date.created | 2021-07-19 | - |
dc.date.created | 2021-07-19 | - |
dc.date.issued | 2021-07 | - |
dc.identifier.citation | PHYSICAL REVIEW RESEARCH, v.3, no.3, pp.033015 | - |
dc.identifier.issn | 2643-1564 | - |
dc.identifier.uri | http://hdl.handle.net/10203/286771 | - |
dc.description.abstract | Mesoscopic quantum dots (QDs) are ubiquitous in quantum devices as reliable sources of hot electrons. However, we have observed an unexpectedly significant energy relaxation of QD-emitted hot electrons up to approximate to 55% of its excitation <= 1.5 meV from the Fermi level. The energetics of hot electrons were obtained through transverse magnetic focusing over a few microns using both QD and quantum point contact (QPC) emitters. Unlike the QPC counterparts, QD emissions deviated substantially from Fermi gas predictions-the focusing peak appeared at lower magnetic fields, and excessive broadening was observed. The phenomenon was modeled by a capacitive interaction transferring energy from the hot electron to the QD. Model simulations reproduced the key experimental features, implying the presence of a strong yet overlooked relaxation mechanism that is intrinsic to QD emissions. Our observation calls for the prudent use of QDs as single electron sources. | - |
dc.language | English | - |
dc.publisher | AMER PHYSICAL SOC | - |
dc.title | Significant energy relaxation of quantum dot emitted hot electrons | - |
dc.type | Article | - |
dc.identifier.scopusid | 2-s2.0-85115894905 | - |
dc.type.rims | ART | - |
dc.citation.volume | 3 | - |
dc.citation.issue | 3 | - |
dc.citation.beginningpage | 033015 | - |
dc.citation.publicationname | PHYSICAL REVIEW RESEARCH | - |
dc.identifier.doi | 10.1103/PhysRevResearch.3.033015 | - |
dc.contributor.localauthor | Sim, Heung-Sun | - |
dc.contributor.localauthor | Choi, Hyoungsoon | - |
dc.contributor.nonIdAuthor | Kim, Uhjin | - |
dc.contributor.nonIdAuthor | Kim, Dongkun | - |
dc.contributor.nonIdAuthor | Jung, Hwanchul | - |
dc.contributor.nonIdAuthor | Chung, Yunchul | - |
dc.contributor.nonIdAuthor | Umansky, V | - |
dc.contributor.nonIdAuthor | Choi, Hyung Kook | - |
dc.description.isOpenAccess | Y | - |
dc.type.journalArticle | Article | - |
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