The Metal-Insulator Transition in Al-Pd-Re Quasicrystals

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概要

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• The unetal-instmlator (Nl-I) tr'ansition ira Al -Pd-He qtrasicryst?tls (QCs) was sttrdied by annealing tnethod. We fottnd th;tt increasing the resistivity ratio r=p(4.2K)/7v(3OOK) of AT-Pd -ReQCs can greatly redtuce the x'altne of the electron correlation gap Is and tlaeref'ore drives thesystern towards and throtugh the IIVI-I transition. In the insulating st?tte, the conductivity o(T)between 0.5 'V 7K can be analyzed xvith o(T) :: agexp[ -(7'g/T)]"" ;tnd the negative ttnagneto-conductance observed at low tertaper?tture is utattinly ;tttrilottted to the decrease of' the locarlizationlength 4 with increasing field.

• 社団法人日本物理学会の論文
• 1998-07-15

著者

• S.t. Lin

  Department Of Physics National Cheng Kung University

• C.R. WANG

  Department of Physics,National Cheng Kung University

• H.S. KUAN

  Department of Physics,National Cheng Kung University

• Y.Y. CHEN

  Institute of Physics,Academic Sinica

• C.r. Wang

  Department Of Physics National Cheng Kung University

• H.s. Kuan

  Department Of Physics National Cheng Kung University

• Chen Y

  Institute Of Physics Academic Sinica

関連論文

• The Metal-Insulator Transition in Al-Pd-Re Quasicrystals

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