Magnetic and electronic properties of Mn4Si7

被引：17
|
作者：
Sulpice, A
Gottlieb, U
Affronte, M
Laborde, O
机构：
[1] Univ Grenoble 1, CNRS, Ctr Rech Tres Basses Temp, Associated Lab, F-38042 Grenoble, France
[2] Ecole Natl Super Phys Grenoble, UMR 5628 CNRS, INPG, Mat & Genie Phys Lab, F-38402 St Martin Dheres, France
[3] Univ Modena, INFMS, Natl Res Ctr, I-41100 Modena, Italy
[4] Univ Modena, Dipartimento Fis, I-41100 Modena, Italy
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2004年 / 272卷
关键词：
silicides; MnSi; magnetization; Hall effect; specific heat; itinerant magnetism;
D O I：
10.1016/j.jmmm.2003.12.364
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present a systematic study of the magnetization, Hall effect and specific heat on single crystals of Mn4Si7. Curie-Weiss law is observed above 43 K. At low-temperature moments order in an anisotropic helical state and are aligned above 1 T. We observe an anomalous Hall effect in both rho(H) vs. B and in R-H vs. T curves and a field dependence of the low T specific heat due to spin fluctuations. The magnetic moments (p(eff) and p(sat)) are the lowest reported for similar itinerant magnetic systems, this suggests that Mn4Si7 is a good candidate to observe critical quantum fluctuations expected for a marginal Fermi liquid. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码：519 / 520
页数：2
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