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
46 papers · 1 filter
Gap Anisotropy, Spin Fluctuations and Normal-State Properties of the Electron Doped Superconductor Sr0.9La0.1CuO2
G. V. M. Williams, R. Dupree, A. Howes +5
We report the results from a thermopower and a Cu nuclear magnetic resonance (NMR) study of the infinite CuO2 layer electron doped high temperature superconducting cuprate (HTSC),…
Large Orbital Magnetic Moment and Coulomb Correlation effects in FeBr2
S. J. Youn, B. R. Sahu, Kwang S. Kim
We have performed an all-electron fully relativistic density functional calculation to study the magnetic properties of FeBr2. We show for the first time that the correlation effec…
A Geometric Fractal Growth Model for Scale Free Networks
S. Jung, S. Kim, B. Kahng
We introduce a deterministic model for scale-free networks, whose degree distribution follows a power-law with the exponent . At each time step, each vertex generates its offspr…
Energy gap, penetration depth and surface resistance of MgB2 thin films determined by microwave resonator mesurements
B. B. Jin, N. Klein, W. N. Kang +3
We have measured the temperature dependence of the microwave surface impedance Zs = Rs + iΩμ_0 \Lamda of two c-axis oriented MgB2 films at a frequency Ω/(2π) of 17.9 GHz employing…
Half-metallic antiferromagnets in double perovskites: LaAVRuO (A=Ca, Sr, and Ba)
J. H. Park, S. K. Kwon, B. I. Min
Based on the theoretical exploration of electronic structures, we propose that the ordered double perovskites LaAVRuO and LaVO/ARuO (001) superlattice (A = Ca, Sr and B…
Superconducting energy gap distribution in c-axis oriented MgB thin film from point contact study
Yu. G. Naidyuk, I. K. Yanson, L. V. Tyutrina +6
We have analyzed about 100 voltage-dependent differential resistance dV/dI(V) curves of metallic point contacts between c-axis oriented MgB thin film and Ag, which exhibit clea…
Superconducting gap and electron-phonon interaction in MgB thin film studied by point contacts
N. L. Bobrov, P. N. Chubov, Yu. G. Naidyuk +6
The superconducting order parameter and electron-phonon interaction (EPI) in a MgB c-axis oriented thin film are investigated by point contacts (PCs). Two superconducting gap…
Spin Coherent-State Path Integrals and the Instanton Calculus
Anupam Garg, Evgueny Kochetov, Kee-Su Park +1
We use an instanton approximation to the continuous-time spin coherent-state path integral to obtain the tunnel splitting of classically degenerate ground states. We show that prov…
Cooperative Jahn-Teller transition and resonant x-ray scattering in thin film
J. H. Song, J. H. Park, K. -B. Lee +1
Epitaxial thin films of stoichiometric were grown on substrates using the pulsed laser deposition technique. From the high resolution x-ray dif…
Modern calorimetry: going beyond tradition
Y. H. Jeong
Calorimetry has been a traditional tool for obtaining invaluable thermodynamic information of matter, the free energy. We describe recent efforts to go beyond this traditional calo…
Peltier ac calorimeter
D. H. Jung, I. K. Moon, Y. H. Jeong
A new ac calorimeter, utilizing the Peltier effect of a thermocouple junction as an ac power source, is described. This Peltier ac calorimeter allows to measure the absolute value…
Anisotropic strains, metal-insulator transition, and magnetoresistance of LaCaMnO films
J. H. Song, J. H. Park, Y. H. Jeong +1
Thin films of perovskite manganite LaCaMnO were grown epitaxially on various substrates by either the pulsed laser deposition method or laser molecular beam e…
Geometric Transition versus Cascading Solution
Keshav Dasgupta, Kyungho Oh, Jaemo Park +1
We study Vafa's geometric transition and Klebanov - Strassler solution from various points of view in M-theory. In terms of brane configurations, we show the detailed equivalences…
Effects of broken time-reversal symmetry on transmission zeros in the Aharonov-Bohm interferometer
Tae-Suk Kim, Sam Young Cho, Chul Koo Kim +1
In this paper, we study the behavior of the transmission zeros in the closed Aharonov-Bohm(AB) interferometer with an embedded scattering center in one arm and the corresponding ch…
On the Origin of Peak-dip-hump Structure in the In-plane Optical Conductivity of the High Cuprates; Role of Antiferromagnetic Spin Fluctuations of Short Range Order
Sung-Sik Lee, Jae-Hyeon Eom, Ki-Seok Kim +1
An improved U(1) slave-boson approach is applied to study the optical conductivity of the two dimensional systems of antiferromagnetically correlated electrons over a wide range of…
Phase Separation in the Two-Dimensional Systems of Strongly Correlated electrons; the Role of Spin Singlet Pairs on Hole Pairing Contribution to Hole-rich Phase
Sung-Sik Lee, Sul-Ah Ahn, Sung-Ho Suck Salk
By paying attention to the hole-doped two-dimensional systems of antiferromagnetically (strongly) correlated electrons, we discuss the cause of hole-rich phase formation in associa…
Magnetic relaxation and critical current density of thin films
H. H. Wen, S. L. Li, Z. W. Zhao +6
Magnetic relaxation and critical current density have been measured on a thin film in a wide region of temperature with the magnetic field up to 8 T. The irreversibility li…
Dendritic flux patterns in MgB2 films
T. H. Johansen, M. Baziljevich, D. V. Shantsev +7
Magneto-opitcal studies of a c-oriented epitaxial MgB2 film with critical current density 10^7 A/cm^2 demonstrate a breakdown of the critical state at temperatures below 10 K [cond…
A Magnetization and Microwave Study of Superconducting MgB2
A. Dulcic, D. Paar, M. Pozek +5
We report magnetic field dependent magnetization and microwave impedance measurements on a MgB2 superconductor prepared by high pressure synthesis. We find that the upper critical…
Direct experimental verification of applicability of single-site model for angle integrated photoemission of small concentrated Ce compounds
H. -D. Kim, J. W. Allen, J. -H. Park +9
Bulk-sensitive high-resolution Ce 4f spectra have been obtained from 3d 4f resonance photoemission measurements on LaCeAl and LaCeRu for $x =…
Optical investigation on the electronic structures of Y_{2}Ru_{2}O_{7}, CaRuO_{3}, SrRuO_{3}, and Bi_{2}Ru_{2}O_{7}
J. S. Lee, Y. S. Lee, T. W. Noh +7
We investigated the electronic structures of the bandwidth-controlled ruthenates, YRuO, CaRuO, SrRuO, and BiRuO, by optical conduc…
Observation of Andreev reflection in the c-axis transport of Bi_2Sr_2CaCu_2O_{8+x} single crystals near T_c and search for the preformed-pair state
Hyun-Sik Chang, Hu-Jong Lee, Migaku Oda
We observed an enhancement of the -axis differential conductance around the zero-bias in AuBiSrCaCuO (Bi2212) junctions near the superconducting transitio…
Synthesis and pinning properties of the infinite-layer superconductor Sr0.9La0.1CuO
C. U. Jung, J. Y. Kim, Mun-Seog Kim +5
We report the high-pressure synthesis of the electron-doped infinite-layer superconductor Sr0.9La0.1CuO2 and its superconducting properties. A Rietveld analysis of X-ray powder dif…
High current-carrying capability in c-axis-oriented superconducting MgB2 thin films
Hyeong-Jin Kim, W. N. Kang, Eun-Mi Choi +3
In high-quality c-axis-oriented MgB2 thin films, we observed high critical current densities (Jc) of 16 MA/cm^2 at 15 K under self fields comparable to those of cuprate high-temper…