Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Taehee Yoo"'
Autor:
Sangyeop Lee, Seul-Ki Bac, Seonghoon Choi, Hakjoon Lee, Taehee Yoo, Sanghoon Lee, Xinyu Liu, M. Dobrowolska, Jacek K. Furdyna
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
Abstract We discuss the use of planar Hall effect (PHE) in a ferromagnetic GaMnAs film with two in-plane easy axes as a means for achieving novel logic functionalities. We show that the switching of magnetization between the easy axes in a GaMnAs fil
Externí odkaz:
https://doaj.org/article/903937e53e3b43b39af619b7a353c83d
Autor:
Taehee Yoo, Eungkyu Lee, Sining Dong, Xiang Li, Xinyu Liu, Jacek K. Furdyna, Margaret Dobrowolska, Tengfei Luo
Publikováno v:
APL Materials, Vol 5, Iss 6, Pp 066101-066101-7 (2017)
We studied the thermal conductivity of Bi2Se3, Bi2Te3, and their alloy Bi2(SexTe1−x)3 at room temperature using time-domain thermoreflectance measurements. The Bi2(SexTe1−x)3 films with various concentrations of Se and Te prepared by molecular be
Externí odkaz:
https://doaj.org/article/7acd226253cd4cf6a35a9a227a0b9f44
Autor:
Taehee Yoo, Alviu Rey Nasir, Seul-Ki Bac, Sangyeop Lee, Seonghoon Choi, Sanghoon Lee, X. Liu, J. K. Furdyna
Publikováno v:
AIP Advances, Vol 7, Iss 5, Pp 055819-055819-6 (2017)
We have investigated the magnetic properties of the Ni films deposited on a GaAs and a Bi2Se3 buffer grown by molecular beam epitaxy on a GaAs (001) substrate. The magnetization measurements at 4 K revealed that the coercivity of the Ni films decreas
Externí odkaz:
https://doaj.org/article/78b110f730844052b550486fe53d9eb3
Autor:
Seul-Ki Bac, Hakjoon Lee, Sangyeop Lee, Seonghoon Choi, Taehee Yoo, Sanghoon Lee, X. Liu, J. K. Furdyna
Publikováno v:
AIP Advances, Vol 6, Iss 5, Pp 055806-055806-7 (2016)
Magnetic anisotropy of Fe films grown on (001) GaAs substrates using Ge buffer layers were investigated by planar Hall effect measurements. In addition to phenomena arising from dominant cubic symmetry of the Fe specimen, the study of angular depende
Externí odkaz:
https://doaj.org/article/b41f29dbee4b431a8f113ad52e1ac2fd
Autor:
Sining Dong, Xinyu Liu, Xiang Li, Vasily Kanzyuba, Taehee Yoo, Sergei Rouvimov, Suresh Vishwanath, Huili G. Xing, Debdeep Jena, Margaret Dobrowolska, Jacek K. Furdyna
Publikováno v:
APL Materials, Vol 4, Iss 3, Pp 032601-032601-7 (2016)
We discuss growth and magnetic properties of high-quality two dimensional (2D) Sn1−xMnxSe2 films. Thin films of this 2D ternary alloy with a wide range of Mn concentrations were successfully grown by molecular beam epitaxy. Mn concentrations up to
Externí odkaz:
https://doaj.org/article/fd4b32f70bd544a3a0ab0eb7e59ece37
Autor:
Sunjae Chung, Sangyeop Lee, Taehee Yoo, Hakjoon Lee, J-H Chung, M S Choi, Sanghoon Lee, X Liu, J K Furdyna, Jae-Ho Han, Hyun-Woo Lee, Kyung-Jin Lee
Publikováno v:
New Journal of Physics, Vol 15, Iss 12, p 123025 (2013)
A striking multiple-step behavior has been observed in magnetoresistance measurements during magnetization reversal in anti-ferromagnetically coupled GaMnAs/GaAs:Be multilayers. This behavior arises from the splitting of the energy degeneracy of spin
Externí odkaz:
https://doaj.org/article/76892568ed5c48d1b9aeaca45ce336aa
Autor:
Seul Ki Bac, Jacek K. Furdyna, Seonghoon Choi, Hakjoon Lee, Kyung Jae Lee, Xinyu Liu, Taehee Yoo, Sangyeop Lee, Sanghoon Lee, Margaret Dobrowolska, Kritsanu Tivakornsasithorn
Publikováno v:
Scientific Reports, Vol 8, Iss 1, Pp 1-11 (2018)
Scientific Reports
Scientific Reports
We report a detailed study of magnetization reversal in Fe/GaMnAs bilayers carried out by magnetotransport measurements. Specifically, we have used planar Hall resistance (PHR), which is highly sensitive to the direction of magnetization, and is ther
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a781f90458361ae1c5ebdc61703086f
http://link.springer.com/article/10.1038/s41598-018-28882-0
http://link.springer.com/article/10.1038/s41598-018-28882-0
Autor:
Alviu Rey Nasir, Xinyu Liu, Margaret Dobrowolska, Jacek K. Furdyna, Seonghoon Choi, Hakjoon Lee, Seul-Ki Bac, Sang Hoon Lee, Sangyeop Lee, Taehee Yoo
Publikováno v:
IEEE Transactions on Magnetics. 53:1-4
We have investigated magnetic properties of Ni film specimens deposited either on GaAs or on Bi2Se3 surfaces. The magnetization saturation field along the out-of-plane direction observed in the Hall data was weaker for the Ni/Bi2Se3 sample than for t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::55fc058fe08f69afcf9fe208a44f360a
https://doi.org/10.1109/tmag.2017.2729500
https://doi.org/10.1109/tmag.2017.2729500
Autor:
Seul Ki Bac, Taehee Yoo, Jacek K. Furdyna, Sangyeop Lee, Sanghoon Lee, Hakjoon Lee, Margaret Dobrowolska, Xinyu Liu, Seonghoon Choi
Publikováno v:
Current Applied Physics. 17:801-805
We have investigated the effect of spin-orbit-induced (SOI) magnetic fields on magnetization switching in GaMnAs films. The sign of such SOI fields depends on the direction of the current flowing in the film, thus providing a handle for electrically
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54b3fd8c8ad08fa8db8c5bee68563f1c
https://doi.org/10.1016/j.cap.2017.03.004
https://doi.org/10.1016/j.cap.2017.03.004
Autor:
Xinyu Liu, Kritsanu Tivakornsasithorn, Margaret Dobrowolska, Taehee Yoo, Jacek K. Furdyna, Seonghoon Choi, Sanghoon Lee, Hakjoon Lee
Publikováno v:
Solid State Communications. 253:37-41
Interlayer exchange coupling (IEC) between GaMnAs layers in GaMnAs/InGaAs/GaMnAs tri-layers was studied by magnetization measurements. Minor hysteresis loops are observed to shift in a direction indicating the presence of ferromagnetic (FM) IEC in th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12c111d1848d93c73387576943608fc0
https://doi.org/10.1016/j.ssc.2017.01.029
https://doi.org/10.1016/j.ssc.2017.01.029