Thermionic and Frenkel-Poole emission effects in orthorhombic HoMnO<sub>3</sub>/Nb-doped SrTiO<sub>3</sub> epitaxial heterojunctions

Wang, Weitian; Sun, Yubo; Yuan, Dehua; Zhang, Lixin; Zhao, Yinchang; Zhen-Hong, Dai

doi:10.1063/1.3569849

Cited by 3 publications

(1 citation statement)

References 24 publications

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“…Although the rectifying behavior has been observed in alloxide rare earth manganites TbMnO 3 /Nb-SrTiO 3 or HoMnO 3 / Nb-SrTiO 3 structures, 23,24) the IV curves separated into two regions by a curve are reported for the first time. The diode ideality factor can be calculated from the slopes of the linear parts of the forward semilogarithmic plots.…”

Section: Resultsmentioning

confidence: 82%

Unusual Electrical Transport Characteristic of the SrSnO3/Nb-Doped SrTiO3 Heterostructure

Wang

Niu

Cui

et al. 2023

Korean. J. Mater. Res.

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An all-perovskite oxide heterostructure composed of SrSnO 3 /Nb-doped SrTiO 3 was fabricated using the pulsed laser deposition method. In-plane and out-of-plane structural characterization of the fabricated films were analyzed by x-ray diffraction with θ-2θ scans and φ scans. X-ray photoelectron spectroscopy measurement was performed to check the film's composition. The electrical transport characteristic of the heterostructure was determined by applying a pulsed dc bias across the interface. Unusual transport properties of the interface between the SrSnO 3 and Nb-doped SrTiO 3 were investigated at temperatures from 100 to 300 K. A diodelike rectifying behavior was observed in the temperature-dependent current-voltage (IV) measurements. The forward current showed the typical IV characteristics of p-n junctions or Schottky diodes, and were perfectly fitted using the thermionic emission model. Two regions with different transport mechanism were detected, and the boundary curve was expressed by ln I = -1.28V -13. Under reverse bias, however, the temperature-dependent IV curves revealed an unusual increase in the reverse-bias current with decreasing temperature, indicating tunneling effects at the interface. The Poole-Frenkel emission was used to explain this electrical transport mechanism under the reverse voltages.

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Section: Resultsmentioning

confidence: 82%

Unusual Electrical Transport Characteristic of the SrSnO3/Nb-Doped SrTiO3 Heterostructure

Wang

Niu

Cui

et al. 2023

Korean. J. Mater. Res.

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Crossover of magnetoresistance from positive to negative in La0.5Sr0.5CoO3−σ/Si heterostructure

Kusaka

Wang

et al. 2012

Thin Solid Films

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Temperature-dependent Poole–Frenkel transport properties of the SrSnO3/Nb-doped SrTiO3 heterostructure

et al. 2023

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All-perovskite oxide heterostructure of SrSnO3/Nb-doped SrTiO3 was fabricated by using the pulsed laser deposition method. Unusual transport properties of the interface between SrSnO3 and Nb-doped SrTiO3 have been investigated at temperatures from 100 to 300 K. A diodelike rectifying behavior has been demonstrated by the temperature-dependent current–voltage (IV) measurements. The forward current showed typical IV characteristics of p–n junctions or Schottky diodes and was perfectly fitted using the thermionic emission model. At the reverse bias, however, the temperature-dependent IV curves developed in the opposite direction, indicating the tunneling effects on the interface. The Poole–Frenkel emission was used to explain this electrical transport mechanism under the reverse voltages.

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Thermionic and Frenkel-Poole emission effects in orthorhombic HoMnO₃/Nb-doped SrTiO₃ epitaxial heterojunctions

Cited by 3 publications

References 24 publications

Unusual Electrical Transport Characteristic of the SrSnO3/Nb-Doped SrTiO3 Heterostructure

Unusual Electrical Transport Characteristic of the SrSnO3/Nb-Doped SrTiO3 Heterostructure

Crossover of magnetoresistance from positive to negative in La0.5Sr0.5CoO3−σ/Si heterostructure

Temperature-dependent Poole–Frenkel transport properties of the SrSnO3/Nb-doped SrTiO3 heterostructure

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Thermionic and Frenkel-Poole emission effects in orthorhombic HoMnO3/Nb-doped SrTiO3 epitaxial heterojunctions

Cited by 3 publications

References 24 publications

Unusual Electrical Transport Characteristic of the SrSnO3/Nb-Doped SrTiO3 Heterostructure

Unusual Electrical Transport Characteristic of the SrSnO3/Nb-Doped SrTiO3 Heterostructure

Crossover of magnetoresistance from positive to negative in La0.5Sr0.5CoO3−σ/Si heterostructure

Temperature-dependent Poole–Frenkel transport properties of the SrSnO3/Nb-doped SrTiO3 heterostructure

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Thermionic and Frenkel-Poole emission effects in orthorhombic HoMnO₃/Nb-doped SrTiO₃ epitaxial heterojunctions