Scanning tunneling spectroscopy on YBa2Cu3Oy/PrBa2Cu3O y/YBa2Cu3Oy sandwiched junctions and YBa2Cu3Oy/Y0.5Pr 0.5Ba2Cu3Oy superlattices

H. C. Yang; H. W. Yu; C. C. Kuo; H. E. Horng; S. Y. Yang

doi:10.1016/S0921-4534(97)01290-2

Scanning tunneling spectroscopy on YBa₂Cu₃O_y/PrBa₂Cu₃O _y/YBa₂Cu₃O_y sandwiched junctions and YBa₂Cu₃O_y/Y_0.5Pr _0.5Ba₂Cu₃O_y superlattices

H. C. Yang, H. W. Yu, C. C. Kuo, H. E. Horng, S. Y. Yang

Graduate Institute of Electro-Optical Science And Technology

Research output: Contribution to journal › Article

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Abstract

The differential conductance, (dI/dV), on YBa₂Cu₃O_y/PrBa₂Cu₃O _y/YBa₂Cu₃O_y (YBCO/PBCO/YBCO) sandwiched junctions and YBa₂Cu₃O_y/Y_0.5Pr _0.5Ba₂Cu₃O_y (YBCO/YPBCO) superlattices was measured with STM at various temperature ranges to investigate the proximity effects. The dI/dV curves show conductance peaks at low temperatures and the energy gap, 2Δ_ab, derived from the peaks is equal to about 46 meV for YBCO/PBCO/YBCO sandwiched junctions, which is consistent with the data obtained from reported data on YBCO single crystals whereas the YBCO/YPBCO ((120 Å/60 Å)x8) superlattices, due to the reduction of T_c, show smaller gap value.

Original language	English
Pages (from-to)	2443-2444
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	282
Issue number	PART 4
DOIs	https://doi.org/10.1016/S0921-4534(97)01290-2
Publication status	Published - 1997 Aug

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ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Cite this

Yang, H. C., Yu, H. W., Kuo, C. C., Horng, H. E., & Yang, S. Y. (1997). Scanning tunneling spectroscopy on YBa₂Cu₃O_y/PrBa₂Cu₃O _y/YBa₂Cu₃O_y sandwiched junctions and YBa₂Cu₃O_y/Y_0.5Pr _0.5Ba₂Cu₃O_y superlattices. Physica C: Superconductivity and its applications, 282(PART 4), 2443-2444. https://doi.org/10.1016/S0921-4534(97)01290-2

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title = "Scanning tunneling spectroscopy on YBa2Cu3Oy/PrBa2Cu3O y/YBa2Cu3Oy sandwiched junctions and YBa2Cu3Oy/Y0.5Pr 0.5Ba2Cu3Oy superlattices",

abstract = "The differential conductance, (dI/dV), on YBa2Cu3Oy/PrBa2Cu3O y/YBa2Cu3Oy (YBCO/PBCO/YBCO) sandwiched junctions and YBa2Cu3Oy/Y0.5Pr 0.5Ba2Cu3Oy (YBCO/YPBCO) superlattices was measured with STM at various temperature ranges to investigate the proximity effects. The dI/dV curves show conductance peaks at low temperatures and the energy gap, 2Δab, derived from the peaks is equal to about 46 meV for YBCO/PBCO/YBCO sandwiched junctions, which is consistent with the data obtained from reported data on YBCO single crystals whereas the YBCO/YPBCO ((120 {\AA}/60 {\AA})x8) superlattices, due to the reduction of Tc, show smaller gap value.",

author = "Yang, {H. C.} and Yu, {H. W.} and Kuo, {C. C.} and Horng, {H. E.} and Yang, {S. Y.}",

year = "1997",

month = aug

doi = "10.1016/S0921-4534(97)01290-2",

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AU - Yang, H. C.

AU - Yu, H. W.

AU - Kuo, C. C.

AU - Horng, H. E.

AU - Yang, S. Y.

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N2 - The differential conductance, (dI/dV), on YBa2Cu3Oy/PrBa2Cu3O y/YBa2Cu3Oy (YBCO/PBCO/YBCO) sandwiched junctions and YBa2Cu3Oy/Y0.5Pr 0.5Ba2Cu3Oy (YBCO/YPBCO) superlattices was measured with STM at various temperature ranges to investigate the proximity effects. The dI/dV curves show conductance peaks at low temperatures and the energy gap, 2Δab, derived from the peaks is equal to about 46 meV for YBCO/PBCO/YBCO sandwiched junctions, which is consistent with the data obtained from reported data on YBCO single crystals whereas the YBCO/YPBCO ((120 Å/60 Å)x8) superlattices, due to the reduction of Tc, show smaller gap value.

AB - The differential conductance, (dI/dV), on YBa2Cu3Oy/PrBa2Cu3O y/YBa2Cu3Oy (YBCO/PBCO/YBCO) sandwiched junctions and YBa2Cu3Oy/Y0.5Pr 0.5Ba2Cu3Oy (YBCO/YPBCO) superlattices was measured with STM at various temperature ranges to investigate the proximity effects. The dI/dV curves show conductance peaks at low temperatures and the energy gap, 2Δab, derived from the peaks is equal to about 46 meV for YBCO/PBCO/YBCO sandwiched junctions, which is consistent with the data obtained from reported data on YBCO single crystals whereas the YBCO/YPBCO ((120 Å/60 Å)x8) superlattices, due to the reduction of Tc, show smaller gap value.

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10.1016/S0921-4534(97)01290-2