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Zhang K, Li HH, Grünberg P, et al. Large rectification magnetoresistance in nonmagnetic Al/Ge/Al heterojunctions. Sci Rep. 2015;5:14249doi: 10.1038/srep14249.
Zhang, K., Li, H. H., Grünberg, P., Li, Q., Ye, S. T., Tian, Y. F., Yan, S. S., Lin, Z. J., Kang, S. S., Chen, Y. X., Liu, G. L., & Mei, L. M. (2015). Large rectification magnetoresistance in nonmagnetic Al/Ge/Al heterojunctions. Scientific reports, 514249. https://doi.org/10.1038/srep14249
Zhang, Kun, et al. "Large rectification magnetoresistance in nonmagnetic Al/Ge/Al heterojunctions." Scientific reports vol. 5 (2015): 14249. doi: https://doi.org/10.1038/srep14249
Zhang K, Li HH, Grünberg P, Li Q, Ye ST, Tian YF, Yan SS, Lin ZJ, Kang SS, Chen YX, Liu GL, Mei LM. Large rectification magnetoresistance in nonmagnetic Al/Ge/Al heterojunctions. Sci Rep. 2015 Sep 21;5:14249. doi: 10.1038/srep14249. PMID: 26387967; PMCID: PMC4585683.
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Sci Rep. 2015 Sep 21;5:14249. doi: 10.1038/srep14249.

Large rectification magnetoresistance in nonmagnetic Al/Ge/Al heterojunctions.

Scientific reports

Kun Zhang, Huan-Huan Li, Peter Grünberg, Qiang Li, Sheng-Tao Ye, Yu-Feng Tian, Shi-Shen Yan, Zhao-Jun Lin, Shi-Shou Kang, Yan-Xue Chen, Guo-Lei Liu, Liang-Mo Mei

Affiliations

  1. School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P. R. China.
  2. Peter Grünberg Institute, Forschungszentrum Jülich, Wilhelm-Johnen-Straße, Jülich, 52428, Germany.

PMID: 26387967 PMCID: PMC4585683 DOI: 10.1038/srep14249

Abstract

Magnetoresistance and rectification are two fundamental physical properties of heterojunctions and respectively have wide applications in spintronics devices. Being different from the well known various magnetoresistance effects, here we report a brand new large magnetoresistance that can be regarded as rectification magnetoresistance: the application of a pure small sinusoidal alternating-current to the nonmagnetic Al/Ge Schottky heterojunctions can generate a significant direct-current voltage, and this rectification voltage strongly varies with the external magnetic field. We find that the rectification magnetoresistance in Al/Ge Schottky heterojunctions is as large as 250% at room temperature, which is greatly enhanced as compared with the conventional magnetoresistance of 70%. The findings of rectification magnetoresistance open the way to the new nonmagnetic Ge-based spintronics devices of large rectification magnetoresistance at ambient temperature under the alternating-current due to the simultaneous implementation of the rectification and magnetoresistance in the same devices.

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