Zobrazeno 1 - 10
of 122
pro vyhledávání: '"Jong-Jean Kim"'
Publikováno v:
Modern Physics Letters B. 23:1533-1538
Spin density waves (SDWs) may be thought of as comprising charge density waves (CDWs) in pairs, with one CDW composed of up-spin electrons and the other composed of down-spin electrons. The superconductivity in cuprates may then be said to be caused
Publikováno v:
International Journal of Modern Physics B. 20:3247-3255
We propose a photon correlation theory for ferroelectrics especially focused on KDP-type where we consider a photon field from its constituent electrons and ions. We derive a Curie–Weiss type dielectric susceptibility from the microscopic Hamiltoni
Autor:
Sang-Jin Ahn, Jong-Jean Kim
Publikováno v:
Journal of Physics: Conference Series. 28:30-35
The change in inverse dielectric susceptibility (χ−1) associated with the phase transition is related to the hard-mode frequency shift (ωQ) as Δ(χ−1) = RωQ2, where the proportionality constant R of the equation can be determined from the exp
Publikováno v:
Journal of Raman Spectroscopy. 37:202-207
By using Slater's phenomenological theory of atomic lattice dynamics, general results for the nondegenerate hard mode of phase transition are rederived in a simpler form. The change in inverse dielectric susceptibility (χ−1) associated with the ph
Publikováno v:
Ferroelectrics. 315:231-237
An Antiferroelectric liquid crystal (AFLC) CS-4001 was studied to find details of the field-induced ferroelectric phase transition by various measurements including the electro-optical hysteresis loops, switching current responses, and dielectric rel
Publikováno v:
The European Physical Journal Applied Physics. 28:301-304
Multiwalled carbon nanotubes (MWNTs) were displaced on low-friction graphite surfaces in an easily controlled fashion by moving a voltage-applied tip of an atomic force microscope (AFM) across them. MWNTs on Si (5 5 12) surfaces were not displaced us
Publikováno v:
Integrated Ferroelectrics. 67:159-166
Pb(Yb1/2Nb1/2)O3 [PYN] and Pb(Yb1/2Ta1/2)O3 [PYT] are highly ordered enough to be a prototype for spectroscopic studies of complex lead-based perovskite compounds Pb(B′, B″)O3 system. We find out changes in the numbers of vibrational mode at each
Autor:
Do-Hyun Kim, Jong-Jean Kim
Publikováno v:
Ferroelectrics. 268:263-268
Autor:
Do-Hyun Kim, Jong-Jean Kim
Publikováno v:
Ferroelectrics. 268:269-274
Autor:
Seungwoo Lee, Jong-Jean Kim
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 364:411-418
Dynamics of a nematic liquid crystal in external switching field was examined for various initial states of electrostatic equilibrium. Two-step electric field was applied to study the switching dynamics from the first step equilibrium at E0 to the se