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首页> 外文会议>Symposium on Quasicrystals held November 30-December 2,1998,Boston,Massachusetts,U.S.A. >Metal-insulator transitionlike behavior in several icosahedral phases
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Metal-insulator transitionlike behavior in several icosahedral phases

机译：二十面体相中的金属-绝缘体过渡行为

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The highly non-metallic electron transport properties in icosahedral Al_70.5Pd_21(Re,Mn)_8.5 phases and their dependence on alloy composition and sample preparation are reviewed and further studied.the study has led to the highest resistiviyt ratios p(4.2K)/p(295K) approx 280 reported so far on iAlPdRe alloys.Similar investigation has also resulted in enhanced resistivity ratios in I-AlCuOs.Evidences for the metal-insulator transition in these i-alloys are documented and discusse din light of the new results.Electron diffraction studies (article by Beeli,Poon,Guo,and Haussler in this conference Proceedings) have provided evidence for electron localization induced by phason disorder.These findings may provide the basis for understanding the nature of electronic states and effects of disorder on electron localization in quasiperiodic systems.
机译：综述并进一步研究了二十面体Al_70.5Pd_21（Re，Mn）_8.5相中的高度非金属电子传输性质及其对合金成分和样品制备的依赖性。该研究导致最高的电阻率比p（4.2K） ）/ p（295K）迄今在iAlPdRe合金上报道了约280次。类似的研究也提高了I-AlCuOs的电阻率比。文献中记录了这些i-合金中金属-绝缘体转变的证据并讨论了新的结果。电子衍射研究（本次会议论文集的Beeli，Poon，Guo和Haussler发表了文章）为声子失调引起的电子局域化提供了证据，这些发现可能为了解电子态的性质和无序对电子的影响提供基础。准周期系统中的电子定位。

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