Výsledky vyhledávání - "Sungjong Woo"

Akademický článek

Autor: Jae-Ung Lee, Sungjong Woo, Jaesung Park, Hee Chul Park, Young-Woo Son, Hyeonsik Cheong

Publikováno v: Nature Communications, Vol 8, Iss 1, Pp 1-7 (2017)

Layered materials have strikingly anisotropic mechanical properties. Here, the authors use Raman spectroscopy and first-principles calculations to unveil that MoS2, an archetypal layered material, possesses a coupling between in-plane uniaxial strain

Externí odkaz: https://doaj.org/article/54241dc65d7b4013a1244d69afbea0a3

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Akademický článek

Emergent localized states at the interface of a twofold PT-symmetric lattice

Autor: Jung-Wan Ryu, Nojoon Myoung, Ara Go, Sungjong Woo, Sang-Jun Choi, Hee Chul Park

Publikováno v: Physical Review Research, Vol 2, Iss 3, p 033149 (2020)

We consider the role of nontriviality resulting from a non-Hermitian Hamiltonian without band topology that conserves twofold PT symmetry assembled by interconnections between a PT-symmetric lattice and its time-reversal partner. Twofold PT symmetry

Externí odkaz: https://doaj.org/article/74e1d87118ff4874995ba03d9238d4ae

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Decelerated Hot Carrier Cooling in Graphene via Nondissipative Carrier Injection from MoS2

Autor: Youngkuk Kim, Minh Dao Tran, Van Luan Nguyen, Hyun Kim, Sung Tae Kim, Hee Chul Park, Ji-Hee Kim, Sunam Jeon, Young Hee Lee, Sungjong Woo, Sung-Gyu Lee, Subash Adhikari

Publikováno v: ACS Nano. 14:13905-13912

One key to improve the performance of advanced optoelectronic devices and energy harvesting in graphene is to understand the predominant carrier scattering via optical phonons. Nevertheless, low li...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::66632849a9eba6f177ea34bdaa975eb0
https://doi.org/10.1021/acsnano.0c06311

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Two-dimensional Dirac fermions on oxidized black phosphorus

Autor: Young-Kyun Kwon, Seoung-Hun Kang, Jejune Park, Sungjong Woo

Publikováno v: Physical Chemistry Chemical Physics. 21:24206-24211

We explore the oxidation of a single layer of black phosphorus using ab initio density functional theory calculations. We search for the equilibrium structures of phosphorene oxides, POx with various oxygen concentrations x (0 ≤ x ≤ 1). By evalua

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b29781053c5c25f76fc75d3f91c5c583
https://doi.org/10.1039/c9cp04372a

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Topological edge states in bowtie ladders with different cutting edges

Autor: Sungjong Woo, Hee Chul Park, Jung-Wan Ryu, Nojoon Myoung

Publikováno v: Physica E: Low-dimensional Systems and Nanostructures. 137:114941

We have studied topological edge states in bowtie ladders with various edge truncations. The symmetric bowtie ladder, which comprises two trivial Su-Schrieffer-Heeger (SSH) lattices, exhibits an insulator-metal transition with trivial insulating stat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a72270a78cb96a0015d582c78937d4b8
https://doi.org/10.1016/j.physe.2021.114941

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Decelerated Hot Carrier Cooling in Graphene

Autor: Minh Dao, Tran, Sung-Gyu, Lee, Sunam, Jeon, Sung-Tae, Kim, Hyun, Kim, Van Luan, Nguyen, Subash, Adhikari, Sungjong, Woo, Hee Chul, Park, Youngkuk, Kim, Ji-Hee, Kim, Young Hee, Lee

Publikováno v: ACS nano. 14(10)

One key to improve the performance of advanced optoelectronic devices and energy harvesting in graphene is to understand the predominant carrier scattering

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::3dd8e1b75c35a77f3370afd8a3f0c2c3
https://pubmed.ncbi.nlm.nih.gov/32813494

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Strain-shear coupling in bilayer MoS2

Autor: Young-Woo Son, Hyeonsik Cheong, Hee Chul Park, Sungjong Woo, Jae-Ung Lee, Jaesung Park

Publikováno v: Nature Communications, Vol 8, Iss 1, Pp 1-7 (2017)
NATURE COMMUNICATIONS(8)

Layered materials such as graphite and transition metal dichalcogenides have extremely anisotropic mechanical properties owing to orders of magnitude difference between in-plane and out-of-plane interatomic interaction strengths. Although effects of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4b7f1570bf63e8d1116381f1aa6e1d93
https://doaj.org/article/54241dc65d7b4013a1244d69afbea0a3

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Emergent localized states at the interface of a twofold $\mathcal{PT}$-symmetric lattice

Autor: Sungjong Woo, Nojoon Myoung, Jung-Wan Ryu, Ara Go, Sang-Jun Choi, Hee Chul Park

We consider the role of non-triviality resulting from a non-Hermitian Hamiltonian that conserves twofold PT-symmetry assembled by interconnections between a PT-symmetric lattice and its time reversal partner. Twofold PT-symmetry in the lattice produc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::691d2a89ab103bf60be5b43c64f4a6a9
http://arxiv.org/abs/1904.00444

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Splitting of conductance resonance through a magnetic quantum dot in graphene

Autor: Jung-Wan Ryu, Sungjong Woo, Hee Chul Park, Seung Joo Lee, Nojoon Myoung

We report a dual resonance feature in ballistic conductance through a quantum Hall graphene nanoribbon with a magnetic quantum dot. Such a magnetic quantum dot localizes Dirac fermions exhibiting anisotropic eigenenergy spectra with broken time-rever

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4db56465a5a2a0fc1c7da93f5592debd
http://arxiv.org/abs/1811.00750

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