Zobrazeno 1 - 10
of 251
pro vyhledávání: '"Joonyeon Chang"'
Autor:
Byeongchan So, Junchae Lee, Changheon Cheon, Joohyung Lee, Uiho Choi, Minho Kim, Jindong Song, Joonyeon Chang, Okhyun Nam
Publikováno v:
AIP Advances, Vol 11, Iss 4, Pp 045036-045036-7 (2021)
Creating voids between thin films is a very effective method to improve thin film crystal quality. However, for AlN material systems, the AlN layer growth, including voids, is challenging because of the very high Al atom sticking coefficient. In this
Externí odkaz:
https://doaj.org/article/6d01311f229e48e1a7aec9785b6bbfe7
Autor:
Seonghoon Woo, Kyung Mee Song, Xichao Zhang, Yan Zhou, Motohiko Ezawa, Xiaoxi Liu, S. Finizio, J. Raabe, Nyun Jong Lee, Sang-Il Kim, Seung-Young Park, Younghak Kim, Jae-Young Kim, Dongjoon Lee, OukJae Lee, Jun Woo Choi, Byoung-Chul Min, Hyun Cheol Koo, Joonyeon Chang
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-8 (2018)
Non-zero topological charge prevents the straight motion of ferromagnetic skyrmions and hinders their applications. Here, the authors report the stabilization and current-driven dynamics of skyrmions in GdFeCo films in which the ferrimagnetic skyrmio
Externí odkaz:
https://doaj.org/article/158a688ac5b2402b93cd6d0ce1644b24
Autor:
Tae-Eon Park, Youn Ho Park, Jong-Min Lee, Sung Wook Kim, Hee Gyum Park, Byoung-Chul Min, Hyung-jun Kim, Hyun Cheol Koo, Heon-Jin Choi, Suk Hee Han, Mark Johnson, Joonyeon Chang
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-7 (2017)
Semiconductors are promising for high performance spintronics but the low functioning temperature hampers their applications. Here the authors achieve a strong room temperature modulation of spin-dependent resistance in GaN nanowires, which marks an
Externí odkaz:
https://doaj.org/article/a7f75cd3087e46968d1e7403a4d72c99
Autor:
Seonghoon Woo, Kyung Mee Song, Hee-Sung Han, Min-Seung Jung, Mi-Young Im, Ki-Suk Lee, Kun Soo Song, Peter Fischer, Jung-Il Hong, Jun Woo Choi, Byoung-Chul Min, Hyun Cheol Koo, Joonyeon Chang
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-8 (2017)
Magnetic skyrmions are potentially suitable for future spintronic devices, but their dynamical behaviour in real space remains elusive. Here, Wooet al. report nanosecond-dynamics of a 100nm-size magnetic skyrmion triggered by current-induced spin-orb
Externí odkaz:
https://doaj.org/article/4bef8c5916ed4c74867ac1b2519ae660
Autor:
Lucas Caretta, K. Leistner, Mantao Huang, Joonyeon Chang, Ki Young Lee, Geoffrey S. D. Beach, Bilge Yildiz, Pierluigi Gargiani, Konstantin Klyukin, Sara Sheffels, Felix Büttner, Jonas Zehner, Manuel Valvidares, Delin Zhang, Alexandra Churikova, Jian-Ping Wang, Deyuan Lyu, Muhammad Usama Hasan
Publikováno v:
Nature Nanotechnology. 16:981-988
Voltage control of magnetic order is desirable for spintronic device applications, but 180° magnetization switching is not straightforward because electric fields do not break time-reversal symmetry. Ferrimagnets are promising candidates for 180° s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cf0496b0a51bdef1525c7d77fca3907c
https://doi.org/10.1038/s41565-021-00940-1
https://doi.org/10.1038/s41565-021-00940-1
Publikováno v:
Electronic Materials Letters. 17:324-330
The detection of spin current injected from the ferromagnet source to the semiconductor channel is very challenging due to the low injection efficiency at the interface. Especially, it is difficult to detect the spin precession signal in a strong Ras
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f08a3345681332ed94367ce6eee8f84
https://doi.org/10.1007/s13391-021-00286-9
https://doi.org/10.1007/s13391-021-00286-9
Autor:
Seonhye Youn, Jeongmin Kim, Hongjae Moon, Jae‐Keun Kim, Juntae Jang, Joonyeon Chang, Takhee Lee, Keehoon Kang, Wooyoung Lee
Publikováno v:
Small
2D transition metal dichalcogenides (TMDCs) have revealed great promise for realizing electronics at the nanoscale. Despite significant interests that have emerged for their thermoelectric applications due to their predicted high thermoelectric figur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20f4a51bfe63fd489573d11f1f630c18
https://pubmed.ncbi.nlm.nih.gov/35485322
https://pubmed.ncbi.nlm.nih.gov/35485322
Autor:
Joonyeon Chang, Hyung-jun Kim, Suk Hee Han, Hee Gyum Park, Byoung-Chul Min, Hyun Cheol Koo, Hansung Kim
Publikováno v:
Current Applied Physics. 20:1295-1298
A homoepitaxial GaAs (110) channel gives a great interest in the field of semiconductor spintronics due to the longer spin diffusion. By utilizing optimal temperature process and V/III flux ratio control, the GaAs layer is grown without a serious def
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::061e53ec3d9236fecb89af129bbdcf42
https://doi.org/10.1016/j.cap.2020.08.009
https://doi.org/10.1016/j.cap.2020.08.009
Autor:
Jing Xia, Simone Finizio, Jaeseung Jeong, Kwangsu Kim, Hyunsu Ju, Kyung Mee Song, Sun Kyung Cha, Wang Kang, Xichao Zhang, Weisheng Zhao, Jörg Raabe, Seonghoon Woo, Tae Eon Park, Joonyeon Chang, Yan Zhou, Biao Pan
Publikováno v:
Nature Electronics. 3:148-155
Magnetic skyrmions are topologically protected spin textures that have nanoscale dimensions and can be manipulated by an electric current. These properties make the structures potential information carriers in data storage, processing and transmissio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae38bfe480df6dd3dcf8950e074bcb05
https://doi.org/10.1038/s41928-020-0385-0
https://doi.org/10.1038/s41928-020-0385-0
Autor:
Joonyeon Chang, Hyeyoun Chang, Seoung-Hwan Park, Doyeol Ahn, Dong Seob Kim, Ju Young Lim, S. Ko, S. J. Park, Jin Dong Song, Soo Seok Kang, S. H. Yang
Publikováno v:
Scientific Reports, Vol 10, Iss 1, Pp 1-8 (2020)
Scientific Reports
Scientific Reports
Cuprous halides, characterized by a direct wide band-gap and a good lattice matching with Si, is an intrinsic p-type I-VII compound semiconductor. It shows remarkable optoelectronic properties, including a large exciton binding energy at room tempera
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fdd1b8ce55709d6816b1441bf95afd7b
http://link.springer.com/article/10.1038/s41598-020-61021-2
http://link.springer.com/article/10.1038/s41598-020-61021-2