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Impedance effect of manganite thin film-based photodetectors

  • Brief Communication
  • Condensed Matter Physics
  • Published:
Chinese Science Bulletin

Abstract

We report on the photodetector structures based on perovskite manganite La0.67Ca0.33MnO3 thin films on tilted SrTiO3 (001) substrates. The photovoltaic effect has been observed in response to excitation by 308 nm ultraviolet laser pulse irradiation in duration of 20 ns at room temperature. The outputs obtained required no amplification. To reduce the deformation of the signal detected, a series of testing measurements were made to investigate the impedance effect. When the impedance at the oscilloscope end matched to the co-axis cable, the signal trace was almost triangular and symmetrical, with response time equal to the excitation laser. In addation, the response linearly depends on the irradiated area for low on-sample energy. The devices work well under unbiased conditions and so are simple to configure for practical applications.

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References

  1. Fontcuberta J, Martinez B, Seffar A, et al. Colossal magnetoresistance of ferromagnetic manganites: Structural tuning and mechanisms. Phys Rev Lett, 1996, 76(7): 1122–1125

    Article  PubMed  CAS  Google Scholar 

  2. Blasco J, Garcia J, Teresa J M de, et al. A systematic study of structural, magnetic and electrical properties of (La1−x Tbx)2/3Ca1/3MnO3 perovskites. J Phys-Condens Matter, 1996, 8(40): 7427–7442

    Article  CAS  Google Scholar 

  3. Wang H S, Li Qi, Liu Kai, et al. Low-field magnetoresistance anisotropy in ultrathin Pr0.67Sr0.33MnO3 films grown on different sub strates. Appl Phys Lett, 1999, 74(15): 2212–2214

    Article  CAS  Google Scholar 

  4. Park J H, Vescovo E, Kim H J, et al. Magnetic properties at surface boundary of a half-metallic ferromagnet La0.7Sr0.3MnO3. Phys Rev Lett, 1998, 81(9): 1953–1956

    Article  CAS  Google Scholar 

  5. Jin S, Tiefel T H, McCromark M, et al. Thickness dependence of magnetoresistance in La-Ca-Mn-O epitaxial films. Appl Phys Lett, 1995, 67(4): 557–559

    Article  CAS  Google Scholar 

  6. Zhao K, Huang Y H, Lu H B, et al. On microscopic origin of photovoltaic effect in La0.8Sr0.2MnO3 films. J Rare Earths, 2005, 23(5): 526–529

    Google Scholar 

  7. Zhao K, Huang Y H, Lu H B, et al. Anomalous photovoltaic effect in La0.8Sr0.2MnO3 films grown on SrTiO3 (001) substrates by laser molecular beam epitaxy. Eur Phys J-Appl Phys, 2006, 35: 173–176

    Article  CAS  Google Scholar 

  8. Rajeswai M, Chen C H, Goyal A, et al. Low-frequency optical response in epitaxial thin films of La0.67Ca0.33MnO3 exhibiting colossal magnetoresistance. Appl Phys Lett, 1996, 68(25): 3555–3557

    Article  Google Scholar 

  9. Zhao Y G, Li J J, Shreekala R, et al. Ultrafast laser induced conductive and resistive transients in La0.7Ca0.3MnO3: Charge transfer and relaxation dynamics. Phys Rev Lett, 1998, 81(6): 1310–1313

    Article  CAS  Google Scholar 

  10. Averitt R D, Lobad A I, Kwon C, et al. Ultrafast conductivity dynamics in colossal magnetoresistance manganites. Phys Rev Lett, 2001, 87(1): No. 017401

    Google Scholar 

  11. Dai J M, Song W H, Du J J, et al. Cluster-glass state and photon-induced effects in perovskite manganite (La0.3Nd0.7)2/3Ca1/3MnO3 films. Phys Rev B, 2003, 67(14): 144405

    Google Scholar 

  12. Dai J M, Song W H, wang S G, et al. Visible-light-induced persistent photoconductivity in perovskite manganite films of (La0.3Nd0.7)2/3Ca1/3MnO3. J Appl Phys, 2001, 90(6): 3118–3120

    Article  CAS  Google Scholar 

  13. Dai J M, Song W H, Wang S G, et al. Visible-light induced persistent photoconductivity in trilayered films of perovskite manganites. J Appl Phys, 2001, 89(11): 6967–6969

    Article  CAS  Google Scholar 

  14. Zhang R L, Dai J M, Song W H, et al. Photoinduced spin-state transition of Co3+ in the layered perovskite manganite thin film. J Phys: Condens Matter, 2004, 16(13): 2245–2252

    Article  CAS  Google Scholar 

  15. Zhao K, Jin K J, Huang Y H, et al. Laser induced ultrafast photovoltaic effect in La0.67Ca0.33MnO3 films at room temperature. Physica B, 2006, 373(1): 72–75

    Article  CAS  Google Scholar 

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Authors and Affiliations

  1. Department of Mathematics and Physics, China University of Petroleum, Beijing, 102249, China

    Zhao Kun

  2. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100080, China

    He Meng & Lü HuiBin

  3. International Center for Materials Physics, Chinese Academy of Sciences, Shenyang, 110016, China

    Zhao Kun

Authors
  1. Zhao Kun
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  2. He Meng
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  3. Lü HuiBin
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Corresponding author

Correspondence to Zhao Kun.

Additional information

Supported by the National Natural Science Foundation of China (Grant Nos. 50672132, 60576015 and 60778034) and the Key Project of the Ministry of Education of China (Grant No. 107020)

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Zhao, K., He, M. & Lü, H. Impedance effect of manganite thin film-based photodetectors. Chin. Sci. Bull. 53, 313–316 (2008). https://doi.org/10.1007/s11434-008-0028-8

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  • DOI: https://doi.org/10.1007/s11434-008-0028-8

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