Pohang University of Science and Technology

output

19932026

most cited30 inch Roll-Based Production of High-Quality Graphene Films for Flexible Transparent Electrodes

8.2k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 2007Show all

37 papers · 1 filter

cond-mat.mtrl-sci2007

Critical behavior of magnetic thin films as a function of thickness

X. T. Pham Phu, V. Thanh Ngo, H. T. Diep

We study the critical behavior of magnetic thin films as a function of the film thickness. We use the ferromagnetic Ising model with the high-resolution multiple histogram Monte Ca…

q-fin.ST2007★ 117 cited

Hurst exponent and prediction based on weak-form efficient market hypothesis of stock markets

Cheoljun Eom, Sunghoon Choi, Gabjin Oh +1

We empirically investigated the relationships between the degree of efficiency and the predictability in financial time-series data. The Hurst exponent was used as the measurement…

math.GT2007

Covering link calculus and iterated Bing doubles

Jae Choon Cha, Taehee Kim

We give a new geometric obstruction to the iterated Bing double of a knot being a slice link: for n>1 the (n+1)-st iterated Bing double of a knot is rationally slice if and only if…

cond-mat.mes-hall2007★ 58 cited

Nonequilibrium Dephasing in an Electronic Mach-Zehnder Interferometer

Seok-Chan Youn, Hyun-Woo Lee, H. -S. Sim

We study nonequilibrium dephasing in an electronic Mach-Zehnder interferometer. We demonstrate that the shot noise at the beam splitter of the interferometer generates an ensemble…

cond-mat.str-el2007★ 4 cited

Torque magnetometry studies of new low temperature metamagnetic states in ErNi_{2}B_{2}C

D. G. Naugle, B. I. Belevtsev, K. D. D. Rathnayaka +2

The metamagnetic transitions in single-crystal ErNi $_{2}$ B $_{2}$ C have been studied at 1.9 K with a Quantum Design torque magnetometer. The critical fields of the transitions depend cr…

astro-ph2007★ 8 cited

Magnification Probability Distribution Functions of Standard Candles in a Clumpy Universe

Chul-Moon Yoo, Hideki Ishihara, Ken-ichi Nakao +1

Lensing effects on light rays from point light sources, such like Type Ia supernovae, are simulated in a clumpy universe model. In our universe model, it is assumed that all matter…

math.CV2007

Robin functions for complex manifolds and applications

Kang-Tae Kim, Norman Levenberg, Hiroshi Yamaguchi

We prove a generalization of the second variation formula of the Robin function associated to a smooth variation of domains in C^N to the case of the c-Robin function associated to…

math.NT2007★ 15 cited

A devil's staircase from rotations and irrationality measures for Liouville numbers

Doyong Kwon

From Sturmian and Christoffel words we derive a strictly increasing function $Δ : [0, \infty) \to R$ . This function is continuous at every irrational point, while at rational p…

hep-th2007★ 22 cited

Determining the Minimal Length Scale of the Generalized Uncertainty Principle from the Entropy-Area Relationship

Wontae Kim, John J. Oh

We derive the formula of the black hole entropy with a minimal length of the Planck size by counting quantum modes of scalar fields in the vicinity of the black hole horizon, takin…

q-fin.ST2007★ 51 cited

Relationship between degree of efficiency and prediction in stock price changes

Cheoljun Eom, Gabjin Oh, Woo-Sung Jung

This study investigates empirically whether the degree of stock market efficiency is related to the prediction power of future price change using the indices of twenty seven stock…

cond-mat.str-el2007★ 34 cited

Effect of linear density of states on the quasi-particle dynamics and small electron-phonon coupling in graphite

C. S. Leem, B. J. Kim, Chul Kim +8

We obtained the spectral function of very high quality natural graphite single crystals using angle resolved photoelectron spectroscopy (ARPES). A clear separation of non-bonding a…

cond-mat.mes-hall2007★ 95 cited

Carbon nanotube, graphene, nanowire, and molecule-based electron and spin transport phenomena using the non-equilibrium Green function method at the level of first principles theory

Woo Youn Kim, Kwang S. Kim

Based on density functional theory (DFT), we have developed algorithms and a program code to investigate the electron transport characteristics for a variety of nanometer scaled de…

math.AG2007★ 39 cited

A simply connected surface of general type with p_g=0 and K^2=3

Heesang Park, Jongil Park, Dongsoo Shin

Motivated by a recent result of Y. Lee and the second author[7], we construct a simply connected minimal complex surface of general type with p_g=0 and K^2=3 using a rational blow-…

cond-mat.supr-con2007★ 10 cited

Electron Removal Self Energy and its application to Ca2CuO2Cl2

Chul Kim, S. R. Park, C. S. Leem +5

We propose using the self energy defined for the electron removal Green's function. Starting from the electron removal Green's function, we obtained expressions for the removal sel…

math.NT2007

Remark on fundamental groups and effective Diophantine methods for hyperbolic curves

Minhyong Kim

We discuss how non-commutative fundamental groups could eventually contribute to algorithms for finding rational points on hyperbolic curves.

quant-ph2007★ 5 cited

Scalable scheme for entangling multiple ququarts using linear optical elements

So-Young Baek, Yoon-Ho Kim

We report a scalable linear optical scheme for generating entangled states of multiple ququarts in which the individual single-ququart state is prepared with the biphoton polarizat…

quant-ph2007★ 6 cited

Practical scheme for non-postselection entanglement concentration using linear optical elements

Myung-Joong Hwang, Yoon-Ho Kim

We report a practical non-postselection entanglement concentration scheme in which a maximally entangled Bell-state photon pair is produced from two pairs of partially (or non-maxi…

cond-mat.mtrl-sci2007★ 35 cited

Influence of oxygen vacancy on the electronic structure of HfO $_{2}$ film

Deok-Yong Cho, Jae-Min Lee, S. -J. Oh +4

We investigated the unoccupied part of the electronic structure of the oxygen-deficient hafnium oxide (HfO $_{\sim 1.8}$ ) using soft x-ray absorption spectroscopy at O $K$ and Hf $N_…

hep-th2007

Holographic trace anomaly at finite temperature

Bum-Hoon Lee, Siyoung Nam, Chanyong Park

We find an exact coordinate transformation rule from the $A d S_{5}$ Schwarzschild black hole in the Poincare and the global patch to the Fefferman-Graham coordinate system. Using thes…

cond-mat.mes-hall2007★ 8 cited

Effect of ferromagnetic contacts on spin accumulation in an all-metallic lateral spin-valve system: Semiclassical spin drift-diffusion equations

Tae-Suk Kim, B. C. Lee, Hyun-Woo Lee

We study the effect of the ferromagnetic (FM) contacts on the spin accumulation in the lateral spin valve system for the collinear magnetization configurations. When an additional…

hep-th2007★ 62 cited

Dimers and Orientifolds

Sebastian Franco, Amihay Hanany, Daniel Krefl +3

We introduce new techniques based on brane tilings to investigate D3-branes probing orientifolds of toric Calabi-Yau singularities. With these new tools, one can write down many or…