Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Koo Chul Je"'
Autor:
Kwangseuk Kyhm, Mikio Eto, Marek Potemski, Robert A. Taylor, Le Si Dang, Jihoon Kyhm, Jin Dong Song, Seongho Park, Koo-Chul Je, Jongsu Kim, Rin Okuyama, Heedae Kim, Gilles Nogues
Publikováno v:
Nano Letters
Nano Letters, American Chemical Society, 2018, 18 (10), pp.6188-6194. ⟨10.1021/acs.nanolett.8b02131⟩
Nano Letters, American Chemical Society, 2018, 18 (10), pp.6188-6194. ⟨10.1021/acs.nanolett.8b02131⟩
We found that optical Aharonov–Bohm oscillations in a single GaAs/GaAlAs quantum ring can be controlled by excitation intensity. With a weak excitation intensity of 1.2 kW cm–2, the optical Aharonov–Bohm oscillation period of biexcitons was obs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1fa9ac5ef1217f043ca579e047d47ce1
https://doi.org/10.1021/acs.nanolett.8b02131
https://doi.org/10.1021/acs.nanolett.8b02131
Autor:
Koo-Chul Je
Publikováno v:
New Physics: Sae Mulli. 65:856-860
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c271ed2550236f116abe353ba69b0c2
https://doi.org/10.3938/npsm.65.856
https://doi.org/10.3938/npsm.65.856
Autor:
Koo Chul Je
Publikováno v:
Journal of the Korean Physical Society. 67:896-900
We investigate the excitonic absorption spectrum induced by dipole-dipole interactions in two coupled quantum dots. The dipoles excited in neighboring quantum dots lead to constructive and destructive interference in excitonic polarizations. We find
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b23182792cccabd650fe3ec2c3b6e8f4
https://doi.org/10.3938/jkps.67.896
https://doi.org/10.3938/jkps.67.896
Autor:
Gilles Nogues, Koo-Chul Je, Heedae Kim, Jin Dong Song, Kwangseuk Kyhm, Woojin Lee, Le Si Dang, Robert A. Taylor, Seongho Park
Publikováno v:
Scientific Reports
Scientific Reports, Nature Publishing Group, 2017, 7, pp.40026. ⟨10.1038/srep40026⟩
SCIENTIFIC REPORTS(7)
Scientific Reports, Nature Publishing Group, 2017, 7, pp.40026. ⟨10.1038/srep40026⟩
SCIENTIFIC REPORTS(7)
Generally confinement size is considered to determine the dimensionality of nanostructures. While the exciton Bohr radius is used as a criterion to define either weak or strong confinement in optical experiments, the binding energy of confined excito
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb2adfbe540d00c568b0b85124e95bd1
https://hal.archives-ouvertes.fr/hal-01429635
https://hal.archives-ouvertes.fr/hal-01429635
Autor:
Koo-Chul Je
Publikováno v:
Journal of the Korean Physical Society. 53:796-801
Optical Properties Induced by LO-Phonon Interactions in a Single Quantum Dot Koo-Chul Je Department of Optical and Electrical Engineering, College of Science and Technology, Paichai University, Daejeon 302-735 (Received 25 June 2008) We investigate t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::644d11036603971e103d353bb6502b4a
https://doi.org/10.3938/jkps.53.796
https://doi.org/10.3938/jkps.53.796
Exciton dipole-dipole interaction in a single coupled-quantum-dot structure via polarized excitation
Autor:
Jong Su Kim, Inhong Kim, Heedae Kim, Kwangseuk Kyhm, Jin Dong Song, Robert A. Taylor, Koo Chul Je, Le Si Dang
Publikováno v:
Nano Letters
Nano Letters, American Chemical Society, 2016, 16 (12), pp.7755-7760. ⟨10.1021/acs.nanolett.6b03868⟩
Nano Letters, American Chemical Society, 2016, 16 (12), pp.7755-7760. ⟨10.1021/acs.nanolett.6b03868⟩
We find that the exciton dipole–dipole interaction in a single laterally coupled GaAs/AlGaAs quantum dot structure can be controlled by the linear polarization of a nonresonant optical excitation. When the excitation intensity is increased with the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::275011a60db96014f1f45188a64d5ba0
https://ora.ox.ac.uk/objects/uuid:57ae773c-fda0-40ec-b7ba-6ea44d7411d1
https://ora.ox.ac.uk/objects/uuid:57ae773c-fda0-40ec-b7ba-6ea44d7411d1
Autor:
Mun Seok Jeong, Sang Jo Lee, Jae Young Leem, Clare C. Byeon, Jin Dong Song, Koo Chul Je, Jong Su Kim, Sang Jun Lee, Hoonsoo Kang, Sam Kyu Noh
Publikováno v:
Journal of the Korean Physical Society. 61:455-459
By using droplet epitaxy, we fabricated asymmetrically-coupled GaAs quantum dot molecules (AQDMs) and symmetrically-coupled GaAs concentric quantum-double rings (SCQRs). The geometrical coupling distances, dot-to-dot for the AQDMs and ring-to-ring fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b2be24f8fd3195d0d469e502ed7062b
https://doi.org/10.3938/jkps.61.455
https://doi.org/10.3938/jkps.61.455
Publikováno v:
Journal of Nanoscience and Nanotechnology. 12:2919-2923
The ultrafast spin dynamics of the bright exciton in CdSe/ZnS nanocrystal quantum dots has been investigated using a circularly polarized pump-probe experiment. A remarkably fast spin flip (-500 fs) of the bright exciton was observed at 4 K, which is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::528bd743d51b4a8854833ed52051c47f
https://doi.org/10.1166/jnn.2012.6146
https://doi.org/10.1166/jnn.2012.6146
Publikováno v:
Journal of Alloys and Compounds. 517:75-79
We investigated the thermoelectric properties of sintered Bi0.5Sb1.5Te3 alloys containing grains for their alignment, sizes and shapes. The figure of merit can be improved as the result of lower resistivity by increasing the alignment, which is reali
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13cd47f3bf6131a971c63a193a581e87
https://doi.org/10.1016/j.jallcom.2011.12.030
https://doi.org/10.1016/j.jallcom.2011.12.030
Autor:
Koo Chul Je
Publikováno v:
Journal of the Korean Physical Society. 56:801-804
We describe the dynamic Fano resonances in a biased three-dimensional semiconductor superlattice driven by combined dc and THz fields. The Fano resonances on the Wannier Stark ladders are dominantly changed by the THz field via the band collapse phen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8be2fa9ca42f5037691ff39385975966
https://doi.org/10.3938/jkps.56.801
https://doi.org/10.3938/jkps.56.801