The mechanism of interlayer exchange coupling in silicon/iron layered structures

被引：1
作者：
Tugushev, V [1 ]
Kulatov, E
Navarro, O
机构：
[1] RRC Kurchatov Inst, Moscow 123182, Russia
[2] Russian Acad Sci, Inst Gen Phys, Moscow 117942, Russia
[3] Natl Autonomous Univ Mexico, Inst Invest Mat, Mexico City 04510, DF, Mexico
来源：
MICROELECTRONICS JOURNAL | 2005年 / 36卷 / 3-6期
关键词：
intertayer exchange coupling; a-Si/Fe structures; indirect tunneling;
D O I：
10.1016/j.mejo.2005.02.061
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We propose a new mechanism of interlayer exchange coupling in a-Si/Fe structures, based on the indirect tunneling of spin-polarized electrons across the semiconductors spacer. This tunneling is effectuated by virtual hopping process over a narrow band, laying close to the Fermi level and leading to the sharp peak in the density of electron states. We take into account the iron-silicide formation inside the spacer and estimate the parameters of an effective exchange. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：488 / 490
页数：3
相关论文
共 10 条
[1]   INTRINSIC AND HEAT-INDUCED EXCHANGE COUPLING THROUGH AMORPHOUS-SILICON [J].
BRINER, B ;
LANDOLT, M .
PHYSICAL REVIEW LETTERS, 1994, 73 (02) :340-343
[2]   THEORY OF INTERLAYER MAGNETIC COUPLING [J].
BRUNO, P .
PHYSICAL REVIEW B, 1995, 52 (01) :411-439
[3]  
Bürgler DE, 2003, J PHYS-CONDENS MAT, V15, pS443, DOI 10.1088/0953-8984/15/5/301
[4]   Exponential dependence of the interlayer exchange coupling on the spacer thickness in MBE-grown Fe/SiFe/Fe sandwiches [J].
deVries, JJ ;
Kohlhepp, J ;
denBroeder, FJA ;
Coehoorn, R ;
Jungblut, R ;
Reinders, A ;
deJonge, WJM .
PHYSICAL REVIEW LETTERS, 1997, 78 (15) :3023-3026
[5]   Temperature-dependent biquadratic coupling in antiferromagnetically coupled Fe/FeSi multilayers [J].
Fullerton, EE ;
Bader, SD .
PHYSICAL REVIEW B, 1996, 53 (09) :5112-5115
[6]  
LIFSHITZ IM, 1982, INTRO THEORY DISORDE
[7]  
PATRIN SG, 2001, SOLID STATE PHYS, V43, P1643
[8]   Interlayer exchange coupling [J].
Stiles, MD .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 200 (1-3) :322-337
[9]   Formation of nonmagnetic c-Fe1-xSi in antiferromagnetically coupled epitaxial Fe/Si/Fe [J].
Strijkers, GJ ;
Kohlhepp, JT ;
Swagten, HJM ;
de Jonge, WJM .
PHYSICAL REVIEW B, 1999, 60 (13) :9583-9587
[10]   Origin of biquadratic exchange in Fe/Si/Fe [J].
Strijkers, GJ ;
Kohlhepp, JT ;
Swagten, HJM ;
de Jonge, WJM .
PHYSICAL REVIEW LETTERS, 2000, 84 (08) :1812-1815
1