PROPERTIES OF METALLIC NANOWIRES - FROM CONDUCTANCE QUANTIZATION TO LOCALIZATION
PROPERTIES OF METALLIC NANOWIRES - FROM CONDUCTANCE QUANTIZATION TO LOCALIZATION
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DOI：
10.1126/science.267.5205.1793
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发表时间：
1995-03-24
期刊：
影响因子：
56.9
通讯作者：
CHENG, HP
中科院分区：
文献类型：
--
作者：
PASCUAL, JI;MENDEZ, J;CHENG, HP
尺寸减小的材料结构表现出不同于块体中的那些的电和机械性质。测量室温下的电子输运在拉金属纳米线，表明电导特性取决于长度，横向尺寸，状态和程度的混乱，和伸长机制的线。电导率在伸长的短线（长度l类似于50埃）表现出周期性的量子化步骤与特征倾角，与有序无序状态的原子层中的线预测的分子动力学模拟。线的电阻R只要l类似于400埃就表现出局部化特性，其中In R（l）类似于l（2）。
Material structures of reduced dimensions exhibit electrical and mechanical properties different from those in the bulk. Measurements of room-temperature electronic transport in pulled metallic nanowires are presented, demonstrating that the conductance characteristics depend on the length, lateral dimensions, state and degree of disorder, and elongation mechanism of the wire. Conductance during the elongation of short wires (length l similar to 50 angstroms) exhibits periodic quantization steps with characteristic dips, correlating with the order-disorder states of layers of atoms in the wire predicted by molecular dynamics simulations. The resistance R of wires as long as l similar to 400 angstroms exhibits localization characteristics with In R(l) similar to l(2).