WEAK LOCALIZATION IN AMORPHOUS-ALLOYS IN THE PRESENCE OF MAGNETIC-IMPURITIES - ENHANCEMENT OF THE SPIN-SPLITTING CONTRIBUTION

被引：5

作者：

AMARAL, VS

BARBARA, B

SOUSA, JB

FILIPPI, J

JANSEN, AGM

MOREIRA, JM

机构：

[1] LAB MAGNETISME LOUIS NEEL, CNRS, F-38042 GRENOBLE, FRANCE

[2] MAX PLANCK INST HOCHFELD MAGNET LABOR, F-38042 GRENOBLE, FRANCE

来源：

EUROPHYSICS LETTERS | 1993年 / 21卷 / 01期

关键词：

D O I：

10.1209/0295-5075/21/1/011

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effect of magnetic impurities on weak localization in amorphous metals is investigated with magnetoresistance in the series (DyxY1-x)Ni up to x = 0.12. In these samples we find that the weak-localization contribution to magnetoresistance is increased with respect to the nonmagnetic sample, YNi, due to an enhancement of the Zeeman spin splitting of the conduction bands by the exchange interaction with the magnetic ions. Over the whole series, the spin-splitting dependence on temperature and composition scales with the paramagnetic susceptibility of the samples. This shows its direct relation with the magnetic-exchange interaction of conduction electrons with Dy moments, which polarize the conduction band.

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收藏

页码：61 / 65

页数：5

相关论文

共 15 条

[1] ON THE CONTRIBUTION OF MAGNETIC SCATTERING TO WEAK LOCALIZATION MAGNETORESISTANCE [J].

AMARAL, VS .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1990, 2 (41) :8201-8204

[2] FITTING TO MAGNETORESISTANCE UNDER WEAK LOCALIZATION IN 3 DIMENSIONS [J].

BAXTER, DV ;

RICHTER, R ;

TRUDEAU, ML ;

COCHRANE, RW ;

STROMOLSEN, JO .

JOURNAL DE PHYSIQUE, 1989, 50 (13) :1673-1688

[3] NEGATIVE MAGNETORESISTIVITY IN DILUTE ALLOYS [J].

BEALMONOD, MT ;

WEINER, RA .

PHYSICAL REVIEW, 1968, 170 (02) :552-+

[4] WEAK LOCALIZATION IN THIN-FILMS - A TIME-OF-FLIGHT EXPERIMENT WITH CONDUCTION ELECTRONS [J].

BERGMANN, G .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1984, 107 (01) :1-58

[5] MEASUREMENT OF THE MAGNETIC SCATTERING TIME BY WEAK LOCALIZATION [J].

BERGMANN, G .

PHYSICAL REVIEW LETTERS, 1982, 49 (02) :162-164

[6] WEAK LOCALIZATION IN METALLIC GLASSES .1. MAGNETORESISTANCE [J].

BIERI, JB ;

FERT, A ;

CREUZET, G ;

SCHUHL, A .

JOURNAL OF PHYSICS F-METAL PHYSICS, 1986, 16 (12) :2099-2118

[7] ELECTRON-SPIN RESONANCE OF GD IN INTERMETALLIC COMPOUNDS YCU, YAG, AND LAAG - WAVE VECTOR DEPENDENCE OF EXCHANGE INTERACTION [J].

DAVIDOV, D ;

MAKI, K ;

ORBACH, R ;

RETTORI, C ;

CHOCK, EP .

SOLID STATE COMMUNICATIONS, 1973, 12 (07) :621-625

[8] EFFECT OF SPIN-ORBIT INTERACTION ON MAGNETORESISTANCE IN THE WEAKLY LOCALIZED REGIME OF 3-DIMENSIONAL DISORDERED-SYSTEMS [J].

FUKUYAMA, H ;

HOSHINO, K .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1981, 50 (07) :2131-2132

[9] EXCHANGE ENERGY, MAGNETIZATION, AND RAMAN-SCATTERING OF (CD,MN)SE [J].

HEIMAN, D ;

SHAPIRA, Y ;

FONER, S ;

KHAZAI, B ;

KERSHAW, R ;

DWIGHT, K ;

WOLD, A .

PHYSICAL REVIEW B, 1984, 29 (10) :5634-5640

[10] UNIFIED APPROACH TO SOME TRANSPORT AND ELECTRON-PARAMAGNETIC-RES PROPERTIES OF NOBLE-METALS WITH RARE-EARTH IMPURITIES [J].

LACUEVA, G ;

LEVY, PM ;

FERT, A .

PHYSICAL REVIEW B, 1982, 26 (03) :1099-1124