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早秋

(1999-12-15)

管管

Item

早秋

(1999-12-15)

管管

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早秋

(1999-12-15)

管管

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Skyrmions as the ground states of quantum dots in strong magnetic fields

(1999-12-15)

Chiueh, HL

;

Chuu, DS

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電子物理學系

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Department of Electrophysics

We note that the properties of skyrmions capture many features of the ground states of quantum dots in strong magnetic fields. Therefore, in the present work we choose skyrmions with high winding numbers as trial ground states. In our results, we find that the occurrence of skyrmions fits an instability criterion of maximum density droplet very well. Interesting spin structures are found and such structures are recently supported by electron spin resonance experiments. The addition spectrum is calculated and the transition found in recent experiments is attributable to anti-skyrmion to skyrmion transition. The implication of pair tunneling from our trial wave function is discussed. [S0163-1829(99)10947-0].

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A new algorithm for 5-band Toeplitz matrix inversion with application to GCV smoothing spline computation

(1999-12-15)

Shiau, JJH

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統計學研究所

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Institute of Statistics

A new algorithm is developed for computing any entry of the inverse of a 5-band Toeplitz matrix. After a linear-time overhead, each entry can be computed in constant time. As an application of this algorithm, we present a way to compute the generalized cross validated smoothing spline in linear time for the equally spaced data case. (C) 1999 Elsevier Science B.V. All rights reserved.

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早秋

(1999-12-15)

管管

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Spatial distributions of elastically backscattered electrons from copper and silver

(1999-12-21)

Kwei, CM

;

Hung, CJ

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Su, P

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Tung, CJ

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電子工程學系及電子研究所

We investigated the spatial distributions regarding the pathlength, the penetration depth, and the lateral displacement of 200-2000 eV electrons elastically backscattered from copper and silver We calculated these distributions by the Monte Carlo method using elastic scattering cross sections and inelastic inverse mean free paths for volume and surface excitations. in our approach, we applied the partial wave expansion method and the finite difference technique to calculate electron elastic cross sections by the Hartree-Fock-Winger-Seitz scattering potential for solid atoms. We employed the extended Drude dielectric function to estimate electron inelastic mean free paths inside the solid and electron surface excitation parameters outside the solid. Our study was focused on the energy dependence of the pathlength distribution, the maximum depth distribution and the radial distribution. We found that both the radial displacement and the maximum depth of backscattered electrons were on the order of a few angstroms. The maximum depth and the pathlength distributions obeyed the exponential attenuation form. The ratio of the attenuation lengths for the pathlength and the maximum depth distributions saturated to a value somewhat greater than two. Considering the back and forth trajectories of backscattered electrons, it revealed that mast electrons were backscattered from the solid through a single elastic scattering or a few elastic scatterings. As electron energy decreases, this ratio became larger, indicating that the probability for smaller scattering angles increases.

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月亮兇手

(1999-12-25)

管管

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ZnO變阻陶瓷毫米波燒結技術研究(III)

(2000)

郭正次

;

KUO CHENG-TZU

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國立交通大學材料科學與工程學系

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澳洲論述:文學與電影(II)

(2000)

蔣淑貞

;

CHIANG SHU-CHEN

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國立交通大學外文系

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切削動態及路徑追蹤之交互作用及對工件輪廓之影響

(2000)

秦繼華

;

CHIN JIH-HUA

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國立交通大學機械工程學系

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應用於深次微米CMOS元件之閘極氧化層與複晶矽介電層之技術開發

(2000)

雷添福

;

LEI TAN-FU

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交通大學電子工程系

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網格動態系統的型及混沌現象(I)

(2000)

林松山

;

LIN SONG-SUN

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國立交通大學應用數學系

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極軟弱岩石之大地工程行為(I)---子計畫一：深基礎在軟弱岩石中之行為

(2000)

黃安斌

;

HUANG AN-BIN

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國立交通大學土木工程學系

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網路合作設計科學活動之環境、學習、與評估---子計畫III：網路合作設計環境及社群設計科學活動的知識建構之評估(II)

(2000)

林珊如

;

LIN SUNNY S.J.

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交通大學教育學程中心

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IC製造業學習曲線之應用研究

(2000)

楊金福

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交通大學工業工程與管理系

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利用電荷幫浦分佈法研究深次微米N型MOS元件電漿製程傷害之可靠性

(2000)

莊紹勳

;

Chung Steve S

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國立交通大學電子工程研究所

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新型光電材料與光子晶體之光電物理性質研究

(2000)

謝文峰

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HSIEH WEN-FENG

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交通大學光電工程研究所

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CMOS發光顯像技術與閘極介電層材料研究---中加合作案(I)

(2000)

汪大暉

;

WANG TAHUI

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國立交通大學電子工程學系

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具有新式副閘極結構的低溫複晶矽薄膜電晶體的製作與分析

(2000)

黃調元

;

TIAO-YUANHUANG

;

國立交通大學電子工程學系

Browsing by Issue Date, starting with "1999-12-15"