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

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

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

ASJC Scopus subject areas

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

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@article{b204a3e13e7d4ac2b9d09ffe80353d0f,

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",

language = "English",

volume = "282",

pages = "2443--2444",

journal = "Physica C: Superconductivity and its Applications",

issn = "0921-4534",

publisher = "Elsevier",

number = "PART 4",

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T1 - Scanning tunneling spectroscopy on YBa2Cu3Oy/PrBa2Cu3O y/YBa2Cu3Oy sandwiched junctions and YBa2Cu3Oy/Y0.5Pr 0.5Ba2Cu3Oy superlattices

AU - Yang, H. C.

AU - Yu, H. W.

AU - Kuo, C. C.

AU - Horng, H. E.

AU - Yang, S. Y.

PY - 1997/8

Y1 - 1997/8

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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