Analyzing oxygen and silicon incorporation in GaN microstructures composed of c-planes and angled facets by confocal magneto-photoluminescence microscopy

Autor: Akinori Kamiyama, Kazunobu Kojima, Shigefusa F. Chichibu, Go Yusa

Publikováno v: AIP Advances, Vol 10, Iss 3, Pp 035215-035215-5 (2020)

Unintentionally doped impurities formed in the microstructures of free-standing GaN grown with facets were studied using confocal magneto-photoluminescence (PL) microscopy. Donor-bound exciton related peaks in PL spectra and their magnetic behavior a

Externí odkaz: https://doaj.org/article/f811cbe9f6e94eba9c7964b9df57a10a

Anisotropic expansion of drifting spin helices in GaAs quantum wells

Autor: Alexander V. Poshakinskiy, C. Ruppert, Markus Betz, Sergey Tarasenko, F. Passmann, Go Yusa, K. J. Schiller, Takeshi Noda, Takaaki Mano, S. Anghel

Publikováno v: Anghel, S, Poshakinskiy, A, Schiller, K, Passmann, F, Ruppert, C, Tarasenko, S A, Yusa, G, Mano, T, Noda, T & Betz, M 2021, ' Anisotropic expansion of drifting spin helices in GaAs quantum wells ', Physical Review B, vol. 103, no. 3, 035429 . https://doi.org/10.1103/PhysRevB.103.035429

The drift of electron spin helices in an external in-plane electric field in GaAs quantum wells is studied by means of time-resolved magneto-optical Kerr microscopy. The evolution of the spin distribution measured for different excitation powers reve

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d29d85da2df657f120a7fa4c1c9cd11
https://curis.ku.dk/ws/files/260403694/PhysRevB.103.035429.pdf

Evidence for a correlated phase of skyrmions observed in real space

Autor: Naokazu Shibata, Takaaki Mano, Junichiro Hayakawa, Go Yusa, Hikaru Iwata, Takeshi Noda, John N. Moore

Publikováno v: Physical Review B. 98

We conduct photoluminescence microscopy that is sensitive to both electron and nuclear spin polarization to investigate the changes that occur in the magnetic ordering in the vicinity of the first integer quantum Hall state in a GaAs two-dimensional

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::75065fc9801bbb027f74382ccf55693b
https://doi.org/10.1103/physrevb.98.161402

Real-space Observation of Quantum Hall Effect using Exciton Microscopy

Autor: Go Yusa

Publikováno v: Journal of the Vacuum Society of Japan. 57:317-323

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0a0164d21f1afc6f7c5e904eeabf6ce8
https://doi.org/10.3131/jvsj2.57.317

The direct-to-indirect band gap crossover in two-dimensional van der Waals Indium Selenide crystals

Autor: Maciej R. Molas, Zakhar D. Kovalyuk, Viktor Zólyomi, Oleg Makarovsky, Xi Chen, Vladimir I. Fal'ko, Amalia Patanè, Garry W. Mudd, Laurence Eaves, Marek Potemski, K. Nogajewski, Zakhar R. Kudrynskyi, Go Yusa

Publikováno v: Scientific Reports
Scientific Reports, 2016, 6 (1)
Mudd, G W, Molas, M R, Chen, X, Zólyomi, V, Nogajewski, K, Kudrynskyi, Z R, Kovalyuk, Z D, Yusa, G, Makarovsky, O, Potemski, M, Fal'Ko, V I & Patanè, A 2016, ' The direct-to-indirect band gap crossover in two-dimensional van der Waals Indium Selenide crystals ', Scientific Reports, vol. 6, 39619 . https://doi.org/10.1038/srep39619
Scientific Reports, Nature Publishing Group, 2016, 6 (1)

The electronic band structure of van der Waals (vdW) layered crystals has properties that depend on the composition, thickness and stacking of the component layers. Here we use density functional theory and high field magneto-optics to investigate th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::26ba9bf24e0322fd45ee02035a871c75
http://eprints.nottingham.ac.uk/38958/