Exchange coupling and high-temperature transport in M(phthalocyanine)I conductors

被引：10

作者：

Martin, I ^{[1
]}

Phillips, P ^{[1
]}

机构：

[1] Univ Illinois, Loomis Lab Phys, Urbana, IL 61801 USA

来源：

PHYSICAL REVIEW B | 1999年 / 60卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.60.530

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

From our analysis of the magnetic susceptibility in M(pc)I organic conductors, we are able to extract a carrier-mediated exchange interaction far Cu2+ spins in the alloy CuxNi1-x(pc)I. We find that J(ed) approximate to 300 K We also show that residual magnetic impurities must be present to account for the observed experimental trends. At high temperatures, we argue that the experimentally observed positive magnetoresistance is consistent with the standard semiclassical correction (omega(c)tau)(2), indicating that in this regime, transport is diffusive and three dimensional. [S0163-1829(99)04621-4].

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页码：530 / 532

页数：3

相关论文

共 17 条

[1]

Abrikosov AA., 1972, Introduction to the Theory of Normal Metals

[2] Metal-insulator transition in oriented poly(p-phenylenevinylene) [J].

Ahlskog, M ;

Menon, R ;

Heeger, AJ ;

Noguchi, T ;

Ohnishi, T .

PHYSICAL REVIEW B, 1997, 55 (11) :6777-6787

[3]

ALTHULER BL, 1982, QUANTUM THEORY SOLID, P130

[4] TRANSPORT-PROPERTIES OF TETRATHIOTETRACENE IODIDE (TTT2I3-DELTA) AT LOW-TEMPERATURES [J].

KHANNA, SK ;

FULLER, WW ;

GRUNER, G ;

CHAIKIN, PM .

PHYSICAL REVIEW B, 1981, 24 (06) :2958-2963

[5] Dimensionality crossover in the transport behavior of the quasi-one-dimensional conductor H-2(phthalocyanine)I [J].

Lee, Y ;

Hensley, HH ;

Thompson, JA ;

Murata, K ;

Hoffman, BM ;

Haard, TM ;

Hamot, PJ ;

Halperin, WP ;

Wolfle, P .

EUROPHYSICS LETTERS, 1996, 36 (09) :681-686

[6] Positive magnetoresistance in quasi-one-dimensional conductors [J].

Martin, I ;

Phillips, P .

PHYSICAL REVIEW B, 1997, 56 (23) :14883-14885

[7] NICKEL PHTHALOCYANINE IODIDE - A HIGHLY-ONE-DIMENSIONAL LOW-TEMPERATURE MOLECULAR-METAL [J].

MARTINSEN, J ;

PALMER, SM ;

TANAKA, J ;

GREENE, RC ;

HOFFMAN, BM .

PHYSICAL REVIEW B, 1984, 30 (11) :6269-6276

[8] TRANSITION OF LOCAL MOMENTS COUPLED TO ITINERANT ELECTRONS IN THE QUASI ONE-DIMENSIONAL CONDUCTOR COPPER PHTHALOCYANINE IODIDE [J].

OGAWA, MY ;

HOFFMAN, BM ;

LEE, S ;

YUDKOWSKY, M ;

HALPERIN, WP .

PHYSICAL REVIEW LETTERS, 1986, 57 (09) :1177-1180

[9] CU(PC)I - A MOLECULAR-METAL WITH A ONE-DIMENSIONAL ARRAY OF LOCAL MOMENTS EMBEDDED IN A FERMI SEA OF CHARGE-CARRIERS [J].

OGAWA, MY ;

MARTINSEN, J ;

PALMER, SM ;

STANTON, JL ;

TANAKA, J ;

GREENE, RL ;

HOFFMAN, BM ;

IBERS, JA .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1987, 109 (04) :1115-1121

[10] STRONG CARRIER SCATTERING BY A CU2+ LOCAL MOMENT ARRAY IN ONE-DIMENSIONAL MOLECULAR CONDUCTORS CUXNI1-X(PHTHALOCYANINATO)I [J].

QUIRION, G ;

POIRIER, M ;

LIOU, KK ;

HOFFMAN, BM .

PHYSICAL REVIEW B, 1991, 43 (01) :860-864