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河秉俊 慶熙大學校 材料科學技術硏究所 1991 材料科學技術硏究論集 Vol.4 No.-
The electron state of an foreign ion in an alloy, particularly the Friedel-Anderson theory on the localized moment in the s-d interaction is discussed, and the relation between the fluctuation times of the localized spin moment and observation time scales are analyzed.
귀금속-천이금속합금에 있어서 상태밀도의 Coherent potential 근사
성유제,하병준 慶熙大學校 레이저 工學硏究所 1992 레이저공학 Vol.3 No.-
This paper will study the electronic structure of disordered noble-transition alloy with coherent potential approximation. The two band Hamiltonian method is used for noble-transition metal alloy with dilute limit and split-band limit using coherent potential approximation. It is shown as a result that the criterion for split band limiting case is more severe than the single band model.
하병준 慶熙大學校 材料科學技術硏究所 1995 材料科學技術硏究論集 Vol.8 No.-
The Polaron problem was solved accurately by Feynman. He used the variational method with path integrals for an electron in the phonon field. The latter can be treated as a Harmonic Oscillator with a fictitious body having a mass of M, and without its original electric charge. It may turn out to be a more realistic if its original electric charge is taken into account.
河秉俊 慶熙大學校 材料科學技術硏究所 1990 材料科學技術硏究論集 Vol.3 No.-
By calculating the renormalized dynamical susceptibility and the renormalized free energy self-consistently, one expect to explain the real T_(c) and the experimental facts of weakly ferromagnetic metals in reasonbly wide temperature range.
河秉埈(Ha, Byung-jun) 중국어문학연구회 2019 중국어문학논집 Vol.0 No.117
The purpose of this paper is to find the best edition among all editions of HeboshiBeilun(何博士備論). The study on edition is the basic work for further study. It was widely known that Xueyanzhai edition is the Best and the Oldest edition among the present editions until now. But according to our research, It couldn"t say the best edition. Because just they couldn"t find different point about missprints, usage of special word forms and content. In this paper, it will be attempted to find the best edition from a comparative between all edition of HeboshiBeilun.
THEORETICAL CALCULATION OF THE SUPERCONDUCTING TRANSITION TEMPERATURE, T_C OF NICKEL METAL
HA, BYUNG-JOON 慶熙大學校 1990 論文集 Vol.19 No.-
金屬 Nickel에 있어서, Electron-Phonon 結合定數 λ_p와 Spin 搖動結合定數 λ_s를 算出함으로써, Nickel 金屬의 超電導遷移溫度 T_c를 理論的으로 計算 하였다.