8.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Asia Pacific Center for Theoretical PhysicsKR600 papers
- Institute for Basic ScienceKR238 papers
- Seoul National UniversityKR166 papers
- Korea Institute for Advanced StudyKR138 papers
- Korea Advanced Institute of Science and TechnologyKR103 papers
- Pohang Accelerator Laboratory91 papers
- Rutgers, The State University of New JerseyUS74 papers
- Lawrence Berkeley National LaboratoryUS67 papers
- Yonsei UniversityKR60 papers
- Korea UniversityKR57 papers
- Pusan National UniversityKR57 papers
- Sungkyunkwan UniversityKR57 papers
122 papers · 1 filter
Short Ballistic Josephson Coupling in Planar Graphene Junctions with Inhomogeneous Carrier Doping
Jinho Park, Jae Hyeong Lee, Gil-Ho Lee +5
We report on short ballistic (SB) Josephson coupling in junctions embedded in a planar heterostructure of graphene. Ballistic Josephson coupling is confirmed by the Fabry-Perot-typ…
Super-rigid Affine Fano Varieties
Ivan Cheltsov, Adrien Dubouloz, Jihun Park
We study a wide class of affine varieties, which we call affine Fano varieties. By analogy with birationally super-rigid Fano varieties, we define super-rigidity for affine Fano va…
Chaos and unpredictability in evolution of cooperation in continuous time
Taekho You, Minji Kwon, Hang-Hyun Jo +2
Cooperators benefit others with paying costs. Evolution of cooperation crucially depends on the cost-benefit ratio of cooperation, denoted as . In this work, we investigate the…
Orphan spins and bound in-gap states in the antiferromagnet CaFeO
C. Stock, E. E. Rodriguez, N. Lee +11
CaFeO is an anisotropic antiferromagnet with two competing () and ($\uparrow \downarrow \uparrow \downar…
Experimental observation of hidden Berry curvature in inversion-symmetric bulk 2H-WSe2
Soohyun Cho, Jin-Hong Park, Jisook Hong +11
We investigate the hidden Berry curvature in bulk 2H-WSe2 by utilizing the surface sensitivity of angle resolved photoemission (ARPES). The symmetry in the electronic structure of…
DropMax: Adaptive Variational Softmax
Hae Beom Lee, Juho Lee, Saehoon Kim +2
We propose DropMax, a stochastic version of softmax classifier which at each iteration drops non-target classes according to dropout probabilities adaptively decided for each insta…
Direct visualization of coexisting channels of interaction in CeSb
Sooyoung Jang, Robert Kealhofer, Caolan John +7
Our understanding of correlated electron systems is vexed by the complexity of their interactions. Heavy fermion compounds are archetypal examples of this physics, leading to exoti…
Broad cross-reactivity of the T-cell repertoire achieves specific and sufficiently rapid target searching
Jin Xu, Junghyo Jo
The molecular recognition of T-cell receptors is the hallmark of the adaptive immunity. Given the finiteness of the T-cell repertoire, individual T-cell receptors are necessary to…
How can we erase states inside a black hole?
Junha Hwang, Hyosub Park, Dong-han Yeom +1
We investigate an entangled system, which is analogous to a composite system of a black hole and Hawking radiation. If Hawking radiation is well approximated by an outgoing particl…
Tunneling from the past horizon
Subeom Kang, Dong-han Yeom
We investigate a tunneling and emission process of a thin-shell from a Schwarzschild black hole, where the shell was initially located beyond the Einstein-Rosen bridge and finally…
Universal Mechanism of Band-Gap Engineering in Transition-Metal Dichalcogenides
Mingu Kang, Beomyoung Kim, Sae Hee Ryu +7
Two-dimensional (2D) van-der-Waals semiconductors have emerged as a class of materials with promising device characteristics owing to the intrinsic bandgap. For realistic applicati…
Two-Dimensional Dirac Fermions Protected by Space-Time Inversion Symmetry in Black Phosphorus
Jimin Kim, Seung Su Baik, Sung Won Jung +5
We report the realization of novel symmetry-protected Dirac fermions in a surface-doped two-dimensional (2D) semiconductor, black phosphorus. The widely tunable band gap of black p…
Electron-Hole Separation in Ferroelectric Oxides for Efficient Photovoltaic Responses
Donghoon Kim, Hyeon Han, June Ho Lee +3
Despite their potential to exceed the theoretical Shockley-Queisser limit, ferroelectric photovoltaics (FPVs) have performed inefficiently due to their extremely low photocurrents.…
Spin-wave propagation in the presence of inhomogeneous Dzyaloshinskii-Moriya interactions
Seung-Jae Lee, Jung-Hwan Moon, Hyun-Woo Lee +1
We theoretically investigate spin-wave propagation through a magnetic metamaterial with spatially modulated Dzyaloshinskii-Moriya interaction. We establish an effective Sch{ö}dinge…
An adaptive memory method for accurate and efficient computation of the Caputo fractional derivative
Daegeun Yoon, Donghyun You
A fractional derivative is a temporally nonlocal operation which is computationally intensive due to inclusion of the accumulated contribution of function values at past times. In…
Spin-orbit coupling, minimal model and potential Cooper-pairing from repulsion in BiS-superconductors
Sergio Cobo-Lopez, M. S. Bahramy, Ryotaro Arita +2
We develop the realistic minimal electronic model for recently discovered BiS superconductors including the spin-orbit coupling based on a first-principles band structure calcu…
Theory of Large Intrinsic Spin Hall Effect in Iridate Semimetals
Adarsh S. Patri, Kyusung Hwang, Hyun-Woo Lee +1
We theoretically investigate the mechanism to generate large intrinsic spin Hall effect in iridates or more broadly in 5d transition metal oxides with strong spin-orbit coupling. W…
Logarithmic singularities and quantum oscillations in magnetically doped topological insulators
Debaleena Nandi, Inti Sodemann, Kevin Shain +9
We report magnetotransport measurements on magnetically doped (Bi,Sb)Te films grown by molecular beam epitaxy. In Hallbar devices, logarithmic dependence on temperature and…
Pre-Hawking radiation cannot prevent the formation of apparent horizon
Pisin Chen, William G. Unruh, Chih-Hung Wu +1
As an attempt to solve the black hole information loss paradox, recently there has been the suggestion that, due to semi-classical effects, a pre-Hawking radiation must exist durin…
Bilinear restriction estimates for surfaces of codimension bigger than one
Jong-Guk Bak, Jungjin Lee, Sanghyuk Lee
In connection with the restriction problem in for hypersurfaces including the sphere and paraboloid, the bilinear (adjoint) restriction estimates have been extensivel…
Correlations in local measurements and entanglement in many-body systems
Chae-Yeun Park, Jaeyoon Cho
While entanglement plays an important role in characterizing quantum many-body systems, it is hardly possible to directly access many-body entanglement in real experiments. In this…
Tailoring the electronic properties of CaRuO via epitaxial strain
C. Dietl, S. K. Sinha, G. Christiani +9
We report the synthesis of CaRuO thin films on NdCaAlO (110), LaAlO (100) and LaSrAlO (001) substrates and show that epitaxial strain induces a transition fro…
Resolution and Relevance Trade-offs in Deep Learning
Juyong Song, Matteo Marsili, Junghyo Jo
Deep learning has been successfully applied to various tasks, but its underlying mechanism remains unclear. Neural networks associate similar inputs in the visible layer to the sam…
Time-Division is Optimal for Covert Communication over Some Broadcast Channels
Vincent Y. F. Tan, Si-Hyeon Lee
We consider a covert communication scenario where a transmitter wishes to communicate simultaneously to two legitimate receivers while ensuring that the communication is not detect…