Probing the band alignment in rectifying SrIrO3/Nb:SrTiO3 heterostructures

doi:10.1063/1.5087956

This content will become publicly available on April 4, 2020

Title: Probing the band alignment in rectifying SrIrO ₃/Nb:SrTiO ₃ heterostructures

Abstract

Here, we have examined the band alignment in SrIrO ₃/Nb:SrTiO ₃ (001) heterojunctions at room temperature using three independent techniques: current–voltage and capacitance–voltage measurements and internal photoemission spectroscopy. We find near-ideal rectifying behavior across the junction, which provides the opportunity to establish the band alignment via Schottky barrier height extractions in the metal-semiconductor junction approximation. The Schottky barrier height deduced from these measurements agrees well with each other within ~14%, with an average value of 1.44 ± 0.11 eV. These results provide a foundation for designing oxide heterostructures to harness the strong spin-orbit coupling and electrochemical properties of strontium iridate.

Authors:

Kim, B. S. Y. ^[1]; Birkhölzer, Y. A. ^[2]; Feng, X. ^[1]; Hikita, Y. ^[3]; Hwang, H. Y. ^[4]

Stanford Univ., Stanford, CA (United States)
Stanford Univ., Stanford, CA (United States); Univ. of Twente (The Netherlands)
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)

Publication Date:: 2019-04-04

Research Org.:: SLAC National Accelerator Lab., Menlo Park, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1528890

Alternate Identifier(s):: OSTI ID: 1505009

Grant/Contract Number:: ECCS-1542152; AC02-76SF00515; GBMF4415

Resource Type:: Accepted Manuscript

Journal Name:: Applied Physics Letters

Additional Journal Information:: Journal Volume: 114; Journal Issue: 13; Journal ID: ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

Citation Formats


                    Kim, B. S. Y., Birkhölzer, Y. A., Feng, X., Hikita, Y., and Hwang, H. Y. Probing the band alignment in rectifying SrIrO3/Nb:SrTiO3 heterostructures.  United States: N. p., 2019. 
        Web.  doi:10.1063/1.5087956.

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                    Kim, B. S. Y., Birkhölzer, Y. A., Feng, X., Hikita, Y., & Hwang, H. Y. Probing the band alignment in rectifying SrIrO3/Nb:SrTiO3 heterostructures.  United States.  doi:10.1063/1.5087956.

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                    Kim, B. S. Y., Birkhölzer, Y. A., Feng, X., Hikita, Y., and Hwang, H. Y. Thu .  
        "Probing the band alignment in rectifying SrIrO3/Nb:SrTiO3 heterostructures".  United States.  doi:10.1063/1.5087956.

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@article{osti_1528890,

  title        = {Probing the band alignment in rectifying SrIrO3/Nb:SrTiO3 heterostructures},

  author       = {Kim, B. S. Y. and Birkhölzer, Y. A. and Feng, X. and Hikita, Y. and Hwang, H. Y.},

  abstractNote = {Here, we have examined the band alignment in SrIrO3/Nb:SrTiO3 (001) heterojunctions at room temperature using three independent techniques: current–voltage and capacitance–voltage measurements and internal photoemission spectroscopy. We find near-ideal rectifying behavior across the junction, which provides the opportunity to establish the band alignment via Schottky barrier height extractions in the metal-semiconductor junction approximation. The Schottky barrier height deduced from these measurements agrees well with each other within ~14%, with an average value of 1.44 ± 0.11 eV. These results provide a foundation for designing oxide heterostructures to harness the strong spin-orbit coupling and electrochemical properties of strontium iridate.},

  doi          = {10.1063/1.5087956},

  journal      = {Applied Physics Letters},

  number       = 13,

  volume       = 114,

  place        = {United States},

  year         = {2019},

  month        = {4}

}

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Works referenced in this record:

Why some interfaces cannot be sharp
journal, January 2006

Nakagawa, Naoyuki; Hwang, Harold Y.; Muller, David A.
Nature Materials, Vol. 5, Issue 3, p. 204-209
DOI: 10.1038/nmat1569

The Analysis of Photoelectric Sensitivity Curves for Clean Metals at Various Temperatures
journal, July 1931

Fowler, R. H.
Physical Review, Vol. 38, Issue 1, p. 45-56
DOI: 10.1103/PhysRev.38.45

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This content will become publicly available on April 4, 2020

Title: Probing the band alignment in rectifying SrIrO 3/Nb:SrTiO 3 heterostructures

Abstract

Citation Formats

Why some interfaces cannot be sharp journal, January 2006

The Analysis of Photoelectric Sensitivity Curves for Clean Metals at Various Temperatures journal, July 1931

Title: Probing the band alignment in rectifying SrIrO ₃/Nb:SrTiO ₃ heterostructures

Why some interfaces cannot be sharp
journal, January 2006

The Analysis of Photoelectric Sensitivity Curves for Clean Metals at Various Temperatures
journal, July 1931