Hydrogen diffusion and its electrical properties variation as a function of the IGZO stacking structure

Authors: Hee Yeon Noh, Woo-Geun Lee, Haripriya G. R., Jung-Hwa Cha, June-Seo Kim, Won Seok Yun, Myoung-Jae Lee, Hyeon-Jun Lee

Source: Scientific Reports, Vol 12, Iss 1, Pp 1-8 (2022)

Subject Terms: Medicine, Science

File Description: electronic resource

Relation: https://doaj.org/toc/2045-2322

Access URL: https://doaj.org/article/c7f3193755bd4049b37f65afc55221e0

Hole doping effect of MoS2 via electron capture of He+ ion irradiation

Authors: Sang Wook Han, Won Seok Yun, Hyesun Kim, Yanghee Kim, D.-H. Kim, Chang Won Ahn, Sunmin Ryu

Source: Scientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)

Subject Terms: Medicine, Science

File Description: electronic resource

Relation: https://doaj.org/toc/2045-2322

Access URL: https://doaj.org/article/5e857d8eb1e343058fe683cde7cc9e8f

Ultrafast above-transition-temperature resurrection of spin density wave driven by coherent phonon generation in BaFe As

Authors: J D Lee, Won Seok Yun, S C Hong

Source: New Journal of Physics, Vol 16, Iss 4, p 043010 (2014)

Subject Terms: BaFe2As2, spin density wave, coherent phonon, time-dependent Ginzburg–Landau theory, first-principles calculation, 78.47.J-, Science, Physics, QC1-999

File Description: electronic resource

Relation: https://doaj.org/toc/1367-2630

Access URL: https://doaj.org/article/b6ba70c8d19b47bab994ecb2ba577a56

Electron mediated/enhanced ferromagnetism in a hydrogen-annealed Mn:Ge magnetic semiconductor.

Authors: Dang Duc Dung¹, Won Seok Yun¹, Younghun Hwang¹, Wuwei Feng¹, Soon Cheol Hong¹, Sunglae Cho¹ slcho@ulsan.ac.kr

Source: Journal of Applied Physics. Mar2011, Vol. 109 Issue 6, p063912. 5p. 4 Graphs.

Subject Terms: *FERROMAGNETISM, *MANGANESE, *GERMANIUM, *MAGNETIC semiconductors, *ANNEALING of metals, *ELECTRONS

A first-principles study of magnetostrictions of Fe3O4 and CoFe2O4.

Authors: Dorj Odkhuu¹, Purev Taivansaikhan¹, Won Seok Yun¹, Soon Cheol Hong¹, schong@ulsan.ac.kr

Source: Journal of Applied Physics; 2014, Vol. 115 Issue 17, p17A916-1-17A916-3, 3p

A first-principles study of magnetostrictions of Fe3O4 and CoFe2O4.

Authors: Dorj Odkhuu, Purev Taivansaikhan, Won Seok Yun, Soon Cheol Hong

Source: Journal of Applied Physics; 2014, Vol. 115 Issue 17, p17A916-1-17A916-3, 3p

Subject Terms: MAGNETISM, MAGNETOSTRICTION, DENSITY functionals, BAND gaps, MAGNETIC properties of condensed matter

Thickness-Dependent Phonon Renormalization and Enhanced Raman Scattering in Ultrathin Silicon Nanomembranes.

Authors: Seonwoo Lee, Kangwon Kim, Dhakal, Krishna P., Hyunmin Kim, Won Seok Yun, JaeDong Lee, Hyeonsik Cheong, Jong-Hyun Ahn

Source: Nano Letters; 12/13/2017, Vol. 17 Issue 12, p7744-7750, 7p

Local Strain Induced Band Gap Modulation and Photoluminescence Enhancement of Multilayer Transition Metal Dichalcogenides.

Authors: Dhakal, Krishna P., Roy, Shrawan, Houk Jang, Xiang Chen, Won Seok Yun, Hyunmin Kim, JaeDong Lee, Jeongyong Kim, Jong-Hyun Ahn

Source: Chemistry of Materials; Jun2017, Vol. 29 Issue 12, p5124-5133, 10p

Hydrogenation-induced atomic stripes on the 2H-MoS2 surface.

Authors: Sang Wook Han^1,2, Won Seok Yun³, Lee, J. D.³ jdlee@dgist.ac.kr, Hwang, Y. H.⁴, Baik, J.⁵, Shin, H. J.⁵, Lee, Wang G.⁶, Park, Young S.⁶ ysinpark@unist.ac.kr, Kim, Kwang S.⁶

Source: Physical Review B: Condensed Matter & Materials Physics. Dec2015, Vol. 92 Issue 24, p1-5. 5p.

Subject Terms: *HYDROGENATION, *MOLYBDENUM sulfides, *ATOMIC structure, *SURFACE chemistry, *SINGLE crystals, *CHEMICAL stability

A Chemical Route to Activation of Open Metal Sites in the Copper-Based Metal-Organic Framework Materials HKUST-1 and Cu-MOF-2.

Authors: Hong Ki Kim¹, Won Seok Yun¹, Min-Bum Kim², Jeung Yoon Kim¹, Youn-Sang Bae², JaeDong Lee¹, Nak Cheon Jeong¹ nc@dgist.ac.kr

Source: Journal of the American Chemical Society. 8/12/2015, Vol. 137 Issue 31, p10009-10015. 7p.

Subject Terms: *METAL-organic frameworks, *DICHLOROMETHANE, *HEAT, *VACUUM, *ACTIVATION (Chemistry), *COORDINATE covalent bond

Strong perpendicular magnetocrystalline anisotropy of bulk and the (001) surface of DO22Mn3Ga: a density functional study.

Authors: Won Seok Yun, Gi-Beom Cha, In Gee Kim, Rhim, S. H., Soon Cheol Hong

Source: Journal of Physics: Condensed Matter; 10/17/2012, Vol. 24 Issue 41, Special section p1-5, 5p

Thickness and strain effects on electronic structures of transition metal dichalcogenides: 2H-MX2 semiconductors (M = Mo, W; X = S, Se, Te).

Authors: Won Seok Yun^1,2, Han, S. W.¹ swhan72@ulsan.ac.kr, Soon Cheol Hong¹ schong@ulsan.ac.kr, In Gee Kim², Lee, J. D.³

Source: Physical Review B: Condensed Matter & Materials Physics. Jan2012, Vol. 85 Issue 4, p1-5. 5p.

Subject Terms: *ELECTRONIC structure, *TRANSITION metal compounds, *THICKNESS measurement, *CHALCOGENIDES, *SEMICONDUCTORS, *STRAINS & stresses (Mechanics), *BAND gaps, *EFFECTIVE mass (Physics)

Engineering of magnetostriction in Fe3Pt1-xIrx by controlling the Ir concentration.

Authors: Odkhuu, Dorj¹, Won Seok Yun¹, Rhim, S. H.^1,2, Soon Cheol Hong¹ schong@mail.ulsan.ac.kr

Source: Applied Physics Letters. 4/11/2011, Vol. 98 Issue 15, p152502. 3p. 1 Diagram, 1 Chart, 2 Graphs.

Subject Terms: *MAGNETOSTRICTION, *IRON, *IRIDIUM, *PLATINUM, *MAGNETIC coupling, *MAGNETIC fields, *ELECTRIC fields

Breaking the absorption limit of Si toward SWIR wavelength range via strain engineering.

Authors: Katiyar, Ajit K.¹, Kean You Thai¹, Won Seok Yun², Lee, JaeDong², Jong-Hyun Ahn¹ ahnj@yonsei.ac.kr

Source: Science Advances. 7/31/2020, Vol. 6 Issue 31, p1-10. 10p.

Subject Terms: *METAL oxide semiconductor field-effect transistors, *OPTOELECTRONIC devices, *ENGINEERING, *WAVELENGTHS, *CHARGE carrier mobility, *SILICON solar cells, *MATERIALS science

A first-principles study of magnetostrictions of Fe3O4 and CoFe2O4.

Authors: Dorj Odkhuu¹, Purev Taivansaikhan¹, Won Seok Yun¹, Soon Cheol Hong¹ schong@ulsan.ac.kr

Source: Journal of Applied Physics. 2014, Vol. 115 Issue 17, p17A916-1-17A916-3. 3p.

Subject Terms: *MAGNETISM, *MAGNETOSTRICTION, *DENSITY functionals, *BAND gaps, *MAGNETIC properties of condensed matter

Rectifying the Optical-Field-Induced Current in Dielectrics: Petahertz Diode.

Authors: Lee, J. D.¹ jdlee@dgist.ac.kr, Won Seok Yun¹, Park, Noejung²

Source: Physical Review Letters. Feb2016, Vol. 116 Issue 5, p1-1. 1p.

Subject Terms: *DIELECTRICS, *HETEROJUNCTIONS, *LASER pulses

Giant Rashba-type splitting in molybdenum-driven bands of MoS2/Bi(111) heterostructure.

Authors: Kyuhwan Lee¹, Won Seok Yun¹, Lee, J. D.¹ jdlee@dgist.ac.kr

Source: Physical Review B: Condensed Matter & Materials Physics. Mar2015, Vol. 91 Issue 12, p1-1. 1p.

Subject Terms: *MOLYBDENUM sulfides, *HETEROSTRUCTURES, *BISMUTH compounds, *ELECTRONIC band structure, *INTERFACES (Physical sciences)

Controlling Ferromagnetic Easy Axis in a Layered MoS2 Single Crystal.

Authors: Sang Wook Han^1,2, Young Hun Hwang¹, Seon-Ho Kim³, Won Seok Yun⁴, Lee, J. D.⁴, Min Gyu Park⁵, Sunmin Ryu⁵, Ju Sang Park⁶, Dae-Hwang Yoo¹, Sang-Pil Yoon⁷, Soon Cheol Hong¹, Kim, Kwang S.³ kim@postech.ac.kr, Park, Young S.³ ysinpark@postech.ac.kr

Source: Physical Review Letters. 6/14/2013, Vol. 110 Issue 24, p247201-1-247201-5. 5p.

Subject Terms: *FERROMAGNETIC materials, *IONIC liquids, *FERROMAGNETISM, *SPINTRONICS, *IRRADIATION, *PROTONS, *NANOWIRES, *HYDROGENATION

Band-gap expansion in the surface-localized electronic structure of MoS2(0002).

Authors: Sang Wook Han¹, Gi-Beom Cha^2,3, Frantzeskakis, Emmanouil⁴, Razado-Colambo, Ivy⁴, Avila, José⁴, Park, Young S.⁵, Daehyun Kim⁶, Jihoon Hwang⁶, Jeong Soo Kang⁶, Sunmin Ryu³, Won Seok Yun^1,7, Soon Cheol Hong¹ schong@ulsan.ac.kr, Asensio, Maria C.^4,8 asensio@synchrotron-soleil.fr

Source: Physical Review B: Condensed Matter & Materials Physics. Sep2012, Vol. 86 Issue 11, p1-5. 5p.

Subject Terms: *BAND gaps, *SURFACES (Technology), *ELECTRONIC structure, *MOLYBDENUM sulfides, *PHOTOELECTRON spectroscopy, *DENSITY functionals

Band-gap transition induced by interlayer van der Waals interaction in MoS2.

Authors: Han, S. W.¹, Hyuksang Kwon², Seong Keun Kim², Sunmin Ryu³, Won Seok Yun¹, Kim, D. H.⁴, Hwang, J. H.⁴, Kang, J.-S.⁴, Baik, J.⁵, Shin, H. J.⁵, Hong, S. C.¹ schong@ulsan.ac.kr

Source: Physical Review B: Condensed Matter & Materials Physics. Jul2011, Vol. 84 Issue 4, p45409:1-45409:6. 6p.

Subject Terms: *VAN der Waals forces, *HETEROJUNCTIONS, *GRAPHENE, *FERMI liquids, *PHOTOELECTRONS