Series resistance effects in La0.5Ca0.5MnO3/SrTiO3:Nb(001) heterojunctions

被引：5
作者：
Wang, J. F. [1 ,2 ]
Cao, D. [1 ]
Zhou, Y. [1 ]
Wang, X. Y. [1 ]
Jiao, Z. W. [1 ]
Gao, J. [2 ]
机构：
[1] China Jiliang Univ, Dept Phys, Hangzhou 310018, Zhejiang, Peoples R China
[2] Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
来源：
JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2015年 / 48卷 / 38期
关键词：
manganites; heterojunction; current-voltage characteristic; series resistance; NB-DOPED SRTIO3; MAGNETORESISTANCE; CROSSOVER;
D O I：
10.1088/0022-3727/48/38/385104
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The effects of series resistance in heterojunctions composed of La0.5Ca0.5MnO3 (LCMO) and Nb:SrTiO3 with 0.05 wt.% and 0.7 wt.% of Nb doping (0.05NbSTO and 0.7NbSTO) have been investigated in detail using current-voltage curves with and without light illumination. Two linear plots, namely, dV/dlnJ versus J and H(J)[ V-(nk(B)T/q)ln(J/A**T-2)] versus J, have been used to extract the series resistance. These two plots give very close values. The extracted series resistance exhibits a monotonous increase with decreasing temperatures, which could explain the observed anomalous temperature dependence of short circuit current in LCMO/0.7NbSTO.
引用
收藏
页数：6
相关论文
共 50 条
  • [1] Effects of Nb doping level on the electronic transport, photoelectric effect and magnetoresistance across La0.5Ca0.5MnO3/Nb:SrTiO3 junctions
    Wang, J. F.
    Jiang, Y. C.
    Chen, M. G.
    Gao, J.
    APPLIED PHYSICS LETTERS, 2013, 103 (25)
  • [2] Novel electronic and magnetic properties of La0.5Ca0.5MnO3 films deposited on (111) SrTiO3 substrates
    Aydogdu, G. H.
    Kuru, Y.
    Habermeier, H. -U.
    JOURNAL OF CRYSTAL GROWTH, 2008, 310 (21) : 4521 - 4524
  • [3] Thickness dependent microstructural changes in La0.5Ca0.5MnO3 thin films deposited on (111) SrTiO3
    Aydogdu, G. H.
    Kuru, Y.
    Nelayah, J.
    van Aken, P. A.
    Habermeier, H-U.
    THIN SOLID FILMS, 2010, 518 (16) : 4667 - 4669
  • [4] Strain effects on La0.5Ca0.5MnO3 thin films
    Antonakos, A.
    Liarokapis, E.
    Aydogdu, G. H.
    Habermeier, H. -U.
    MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2007, 144 (1-3): : 83 - 88
  • [5] Elastic anomalies in the perovskite manganite La0.5Ca0.5MnO3
    Chen, C. X.
    Zheng, J. Y.
    Jiang, Y. Y.
    Li, J.
    Zheng, R. K.
    PHYSICA B-CONDENSED MATTER, 2010, 405 (08) : 2088 - 2090
  • [6] Electron transport behavior and charge ordering phenomena in La0.5Ca0.5MnO3
    Kekade, Shankar S.
    Devan, Rupesh S.
    Deshmukh, Alka V.
    Phase, D. M.
    Choudhary, R. J.
    Patil, Shankar I.
    JOURNAL OF ALLOYS AND COMPOUNDS, 2016, 682 : 447 - 453
  • [7] Effect of size reduction on charge ordering in La0.5Ca0.5MnO3
    Sarkar, Tapati
    Ghosh, Barnali
    Raychaudhuri, A. K.
    JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2007, 7 (06) : 2020 - 2024
  • [8] Magnetoresistive memory in phase-separated La0.5Ca0.5MnO3
    Sacanell, J
    Parisi, F
    Levy, P
    Ghivelder, L
    PHYSICA B-CONDENSED MATTER, 2004, 354 (1-4) : 43 - 46
  • [9] Magnetoresistance in phase-separated La0.5Ca0.5MnO3 manganite
    Freitas, RS
    Ghivelder, L
    Sacanell, J
    Levy, P
    Parisi, F
    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2004, 272 : 1745 - 1747
  • [10] Influence of the granule size on the magnetocaloric properties of manganite La0.5Ca0.5MnO3
    Gamzatov, A. G.
    Batdalov, A. B.
    Aliev, A. M.
    Amirzadeh, P.
    Kameli, P.
    Ahmadvand, H.
    Salamati, H.
    PHYSICS OF THE SOLID STATE, 2013, 55 (03) : 502 - 507
12345