Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Ye-Hwan Ahn"'
Autor:
Heung-Sun Sim, Young-Seok Ghee, Myung-Ho Bae, Sungguen Ryu, Bum-Kyu Kim, Ye-Hwan Ahn, Changki Hong, Nam Kim
Publikováno v:
Journal of the Korean Physical Society. 75:331-336
Parallelization of pump devices is a direct way to increase the output level of the single-electron pump, which is required for metrological purposes. We fabricated a pair of single-electron pumps in parallel on a chip level and investigated their sy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63df469ad2eb9ef8563f0aae800fc8cb
https://doi.org/10.3938/jkps.75.331
https://doi.org/10.3938/jkps.75.331
Publikováno v:
Journal of the Korean Society for Precision Engineering. 35:385-397
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d54966f04d92dd0f6026c16ceb0e33b
https://doi.org/10.7736/kspe.2018.35.4.385
https://doi.org/10.7736/kspe.2018.35.4.385
Publikováno v:
Physics and High Technology. 27:23-29
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8324e75dc457ae4c57a28676fb62dafb
https://doi.org/10.3938/phit.27.008
https://doi.org/10.3938/phit.27.008
Autor:
Ye-Hwan Ahn, Changki Hong, Young-Seok Ghee, Yunchul Chung, Young-Pyo Hong, Myung-Ho Bae, Nam Kim
Publikováno v:
Journal of Applied Physics; 11/21/2017, Vol. 122 Issue 19, p1-6, 6p, 1 Diagram, 3 Graphs
Autor:
Ye-Hwan Ahn, Yunchul Chung
Publikováno v:
Journal of Applied Physics; 2017, Vol. 122 Issue 5, p054303-1-054303-5, 5p, 6 Graphs
Autor:
Bum Kyu Kim, Ju Jin Kim, Heung-Sun Sim, Myung-Ho Bae, Minsoo Kim, Ye Hwan Ahn, Sang Jun Choi, Jae Cheol Shin
Publikováno v:
Nanoscale. 10(48)
Coupling of the electron orbital motion and spin, i.e., spin-orbit coupling (SOC) leads to nontrivial changes in energy-level structures, giving rise to various spectroscopies and applications. The SOC in solids generates energy-band inversion or spl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca276f1511732032a21438eb28722fe9
https://pubmed.ncbi.nlm.nih.gov/30516777
https://pubmed.ncbi.nlm.nih.gov/30516777
We demonstrate the robust operation of a gallium arsenide tunable-barrier single-electron pump operating with 1 part-per-million accuracy at a temperature of $1.3$~K and a pumping frequency of $500$~MHz. The accuracy of current quantisation is invest
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::07f479f524a8957d02f89a4c79bb2ee9
http://arxiv.org/abs/1810.00100
http://arxiv.org/abs/1810.00100
Publikováno v:
2018 Conference on Precision Electromagnetic Measurements (CPEM 2018).
In order to increase the output current level, we have fabricated a parallelized pump with two gate-tunable quantum-dot pumps based on GaAs/AlGaAs heterostructure. Each pump device is composed of multiple gates forming a quantum dot whose potential s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d33f990b700852054fc983a05b0ed9f
https://doi.org/10.1109/cpem.2018.8501249
https://doi.org/10.1109/cpem.2018.8501249
Autor:
Mun-Seog Kim, Ye-Hwan Ahn, Myung-Ho Bae, Wan-Seop Kim, Changki Hong, Yunchul Chung, Nam Kim, Dong-Hun Chae
Publikováno v:
2018 Conference on Precision Electromagnetic Measurements (CPEM 2018).
We characterized KRISS precision measurement system by measuring the Allan deviation of the quantized current generated by GaAsl AIGaAs gate-tunable electron pumps, where the current was amplified by the ultrastable low-nose current amplifier (ULCA)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b09385369c497c38c766d683ce90770
https://doi.org/10.1109/cpem.2018.8500868
https://doi.org/10.1109/cpem.2018.8500868
Autor:
Ye-Hwan Ahn, Yunchul Chung
The quantized current generated by a quantum dot pump is calculated numerically. The numerical simulation is done by dividing the time varying potential into many static potentials with a short time interval and calculating the electron capture and p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ccd71f6746bc250a20d837f50f84f19f