Inverse and oscillatory magnetoresistance in Fe(001)/MgO/Cr/Fe magnetic tunnel junctions

被引：11
|
作者：
Zhang, Jia [3 ]
Wang, Yan [3 ]
Zhang, X. -G. [1 ,2 ]
Han, X. F. [3 ]
机构：
[1] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci & Comp Sci, Oak Ridge, TN 37831 USA
[2] Oak Ridge Natl Lab, Div Math, Oak Ridge, TN 37831 USA
[3] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, State Key Lab Magnetism, Beijing 100190, Peoples R China
来源：
PHYSICAL REVIEW B | 2010年 / 82卷 / 13期
关键词：
LAYER; CONDUCTION;
D O I：
10.1103/PhysRevB.82.134449
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of Cr(001) insertion layers in Fe(001)/MgO/Cr/Fe magnetic tunneling junctions is studied from first principles. It is shown that with the increase in the Cr(001) layer thickness, the tunneling magnetoresistance (TMR) first decreases rapidly and then oscillates with a two-monolayer period. At some thicknesses, the oscillation leads to a sign reversal of the TMR. The oscillatory interfacial Cr moment at the Cr-MgO interface as a function of the Cr layer thickness, which arises from the layer-antiferromagnetic ordering of Cr, is the cause for the oscillatory TMR.
引用
收藏
页数：6
相关论文
共 50 条
  • [21] Giant tunnel magnetoresistance in magnetic tunnel junctions with a crystalline MgO(001) barrier
    Yuasa, S.
    Djayaprawira, D. D.
    JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2007, 40 (21) : R337 - R354
  • [22] Transmission electron microscopy study of the Fe(001)|MgO(001) interface for magnetic tunnel junctions
    Wang, Chao
    Wang, Shouguo
    Kohn, Amit
    Ward, Roger C. C.
    Petford-Long, Amanda. K.
    IEEE TRANSACTIONS ON MAGNETICS, 2007, 43 (06) : 2779 - 2781
  • [23] Oxygen-induced symmetrization and structural coherency in Fe/MgO/Fe(001) magnetic tunnel junctions
    Tusche, C
    Meyerheim, HL
    Jedrecy, N
    Renaud, G
    Ernst, A
    Henk, J
    Bruno, P
    Kirschner, J
    PHYSICAL REVIEW LETTERS, 2005, 95 (17)
  • [24] Consequences of interfacial Fe-O bonding and disorder in epitaxial Fe/MgO/Fe(001) magnetic tunnel junctions
    Bonell, F.
    Andrieu, S.
    Bataille, A. M.
    Tiusan, C.
    Lengaigne, G.
    PHYSICAL REVIEW B, 2009, 79 (22)
  • [25] Large inverse magnetoresistance induced by annealing effect in fully epitaxial FeCo/MgO/Fe magnetic tunnel junctions.
    Li, Q.
    Li, S.
    Xu, J.
    Yan, S.
    Ji, Y.
    Miao, G.
    2015 IEEE MAGNETICS CONFERENCE (INTERMAG), 2015,
  • [26] Inverse tunnel magnetoresistance in epitaxial FeCo/MgO/Fe tunnel junctions patterned by in situ shadow-masks
    Gao, Xiaoyang
    Li, Qiang
    Li, Shandong
    Xu, Jie
    Qin, Youzhi
    Shi, Xingjun
    Yan, Shishen
    Miao, Guoxing
    JOURNAL OF ALLOYS AND COMPOUNDS, 2016, 662 : 79 - 83
  • [27] Giant room-temperature magnetoresistance in single-crystal Fe/MgO/Fe magnetic tunnel junctions
    Shinji Yuasa
    Taro Nagahama
    Akio Fukushima
    Yoshishige Suzuki
    Koji Ando
    Nature Materials, 2004, 3 : 868 - 871
  • [28] Inverse tunnel magnetoresistance in epitaxial FeCo/MgO/Fe tunnel junctions patterned by in situ shadow-masks
    Li, Qiang (liqiang@qdu.edu.cn), 1600, Elsevier Ltd (662):
  • [29] Effects of B and N modified interface and applied bias on the magnetoresistance in Fe/MgO/Fe magnetic tunnel junctions
    Wang, T. X.
    Li, Y.
    Xia, C. X.
    Zhao, X.
    An, Y. P.
    Dai, X. Q.
    JOURNAL OF APPLIED PHYSICS, 2017, 121 (12)
  • [30] Giant room-temperature magnetoresistance in single-crystal Fe/MgO/Fe magnetic tunnel junctions
    Yuasa, S
    Nagahama, T
    Fukushima, A
    Suzuki, Y
    Ando, K
    NATURE MATERIALS, 2004, 3 (12) : 868 - 871
12345