Dimensionality crossover in the transport behavior of the quasi-one-dimensional conductor H-2(phthalocyanine)I

被引：4

作者：

Lee, Y

Hensley, HH

Thompson, JA

Murata, K

Hoffman, BM

Haard, TM

Hamot, PJ

Halperin, WP

Wolfle, P

机构：

[1] NORTHWESTERN UNIV,DEPT CHEM,EVANSTON,IL 60208

[2] NORTHWESTERN UNIV,MAT RES CTR,EVANSTON,IL 60208

[3] UNIV KARLSRUHE,INST THEORIE KONDENSIERTEN MAT,D-76128 KARLSRUHE,GERMANY

来源：

EUROPHYSICS LETTERS | 1996年 / 36卷 / 09期

关键词：

D O I：

10.1209/epl/i1996-00286-8

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Electrical-transport measurements are reported on high-purity H-2(pc)I single crystals and their alloys with Ni(pc)I in the temperature range from room temperature to 20 mK and in magnetic fields up to 5.5 T. We have observed a sharp maximum in conductivity at 1.8 K which we attribute to crossover from one- to three-dimensional behavior. The conductivity follows a simple quadratic temperature dependence below 1.8 K and remains metallic (approximate to 10(4) Omega(-1) cm(-1)) at very low temperatures. A negative contribution to the magnetoresistance appears at 1.8 K consistent with weak-localization theory.

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页码：681 / 686

页数：6

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