Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Sung Un Cho"'
Publikováno v:
AIP Advances, Vol 5, Iss 8, Pp 087186-087186-6 (2015)
We have investigated the time-domain characteristics of the Autler-Townes doublet in a superconducting circuit. The transition probabilities between the ground state and the Autler-Townes doublet states are shown to be controlled in a phase-coherent
Externí odkaz:
https://doaj.org/article/342b8a80f6544252b46061f2692f28ad
Autor:
Jae-Hyun Lee, Seondo Park, Chanuk Yang, Hyung Kook Choi, Myung Rae Cho, Sung Un Cho, Yun Daniel Park
Publikováno v:
Micromachines, Vol 7, Iss 12, p 223 (2016)
We report on the realization of free-standing GaMnAs epilayer sheets using nanomachining techniques. By optimizing the growth conditions of the sacrificial Al0.75Ga0.25As layer, free-standing metallic GaMnAs (with ~6% Mn) microsheets (with TC ~85 K)
Externí odkaz:
https://doaj.org/article/9f5a9a8e6023434d979cc9ba3f0a5aa5
Autor:
Sung Un Cho, Wanki Park, Bum-Kyu Kim, Minky Seo, Dongsung T. Park, Hyungkook Choi, Nam Kim, H.-S. Sim, Myung-Ho Bae
Publikováno v:
Nano Letters. 22:9313-9318
Single-electron sources, formed by a quantum dot (QD), are key elements for realizing electron analogue of quantum optics. We develop a new type of single-electron source with functionalities that are absent in existing sources. This source couples w
Autor:
Seondo Park, Young Duck Kim, Myunglae Jo, Yun Daniel Park, Dong-Uk Kim, Hyung Kook Choi, Chanuk Yang, Jae-Hyun Lee, Sung Un Cho
Publikováno v:
Scientific Reports, Vol 9, Iss 1, Pp 1-8 (2019)
Scientific Reports
Scientific Reports
Strain perturbs atomic ordering in solids, with far-reaching consequences from an increased carrier mobility to localization in Si, stabilization of electric dipoles and nanomechanical transistor action in oxides, to the manipulation of spins without
Publikováno v:
2020 Conference on Precision Electromagnetic Measurements (CPEM).
A single-electron pump based on a quantum dot is a promising candidate to realize the quantum current standard based on the new SI definition. In order to develop the quantum current standard, we fabricated two different types of single electron pump
Autor:
Sungwan Cho, Sang Goon Kim, Kimin Hong, Seung-Bo Shim, Myunglae Jo, Sung Un Cho, Yun Daniel Park
Publikováno v:
Journal of the Korean Physical Society. 71:684-691
In the present study, the acoustic field of a high intensity focused ultrasound (HIFU) transducer in water was measured by using a commercially available needle hydrophone intended for HIFU use. To validate the results of hydrophone measurements, num
Autor:
Sungwan Cho, Myunglae Jo, Seung-Bo Shim, Yun Daniel Park, Sung Un Cho, Kimin Hong, Sang Goon Kim
Publikováno v:
Journal of the Korean Physical Society. 71:733-739
Measurement of reflected optical light from the surface of microscopic structures can offer a precise tool to investigate the oscillatory motion of micro- and nano-mechanical resonators. We demonstrate an optical investigation of multiple flexural mo
Autor:
Myung-Ho Bae, Jin Dong Song, Nam Kim, Byeong-Sung Yu, Wan-Seop Kim, H. W. Choi, Sung-Un Cho, Suk-In Park, Bum-Kyu Kim, Ju-Jin Kim
Publikováno v:
AIP Advances, Vol 9, Iss 10, Pp 105017-105017-5 (2019)
The reversal technique in electrical measurements has been generally used to obtain a genuine value of an interesting physical quantity without unwanted signal offset. In the present work, we developed a novel cryo-switch made of electrical gates on
Autor:
Myunglae Jo, Junho Suh, Sung Un Cho, Sang Goon Kim, Yun Daniel Park, Hee Chul Park, Sungwan Cho, Seung-Bo Shim
Publikováno v:
Physical Review Applied. 9
Recent research on nanomechanical resonators has shown that their mechanical motion can be controlled via the interactions between different flexural modes, in diverse structures. Strong coupling in flexural modes has been attributed to strain mediat
Autor:
Tero T. Heikkilä, Jani Tuorila, Juha-Matti Pirkkalainen, Mika Sillanpää, Sung Un Cho, Francesco Massel, Pertti Hakonen
Publikováno v:
Nature Communications
Coupling electromagnetic waves in a cavity and mechanical vibrations via the radiation pressure of photons is a promising platform for investigations of quantum–mechanical properties of motion. A drawback is that the effect of one photon tends to b