Suppression of photovoltaic effect by magnetic field in Pr 0.65(Ca0.75Sr0.25)0.35MnO 3/Nb:SrTiO3 heterostructure

C. Luo, K. X. Jin*, C. L. Chen, T. Wu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

The heterostructure composed of Pr0.65(Ca0.75Sr 0.25)0.35MnO3 and 0.7 wt. % Nb-doped SrTiO 3 was fabricated. The heterostructure exhibits an asymmetric current-voltage relation similar to that of p-n junctions and an obvious photovoltaic effect with its maximum value of about 25.1 mV at T = 140 K. It is interesting that the magnetic field has a strong suppression effect on photovoltaic effect, and the maximum relative change of photovoltage under the magnetic field of 1 T is about 63% with the illumination of 15 mW/mm2 light (532 nm) at T ∼ 140 K. The physical mechanism is explained by the electronic phase separation mechanism.

Original languageEnglish (US)
Article number212401
JournalApplied Physics Letters
Volume103
Issue number21
DOIs
StatePublished - Nov 18 2013

Bibliographical note

Funding Information:
This work was supported by the National Natural Science Foundation of China (Nos. 61078057, 51202195, and 51172183), the natural science foundation of Shaanxi Province (No. 2012JQ8013), Aviation Foundation of China (No. 2011ZF53065), Graduate Student Seed Fund (No. Z2013142), and NPU Foundation for Fundamental Research (No. JC20120246).

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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