Superconducting properties of ultra-thin YBa2Cu3O7 layers in (PrxY1-x)Ba2Cu3O7YBa 2Cu3O7(PrxY1-x)Ba 2Cu3O7 trilayer structures

C. Kwon; Qi Li; I. Takeuchi; P. A. Warburton; C. Doughty; S. N. Mao; X. X. Xi; T. Venkatesan

doi:10.1016/0921-4534(96)00321-8

Superconducting properties of ultra-thin YBa₂Cu₃O₇ layers in (Pr_xY_1-x)Ba₂Cu₃O₇YBa ₂Cu₃O₇(Pr_xY_1-x)Ba ₂Cu₃O₇ trilayer structures

C. Kwon, Qi Li, I. Takeuchi, P. A. Warburton, C. Doughty, S. N. Mao, X. X. Xi, T. Venkatesan

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

6 Scopus citations

Abstract

We have studied the superconducting properties of ultra-thin YBa₂Cu₃O₇ layers using trilayers of YBa₂Cu₃O₇ sandwiched between semiconducting (Pr_xY_1-x)Ba₂Cu₃O₇ layers. We find that superconducting parameters such as the transition temperature T_c, the upper critical field H_c2(0), and the Pippard coherence length ξ₀ deviate from bulk values when the YBa₂Cu₃O₇ layer is thinner than four unit cells. The dependence of T_c on the thickness of YBa₂Cu₃O₇ with different Pr composition x of the (Pr_xY_1-x)Ba₂Cu₃O₇ adjacent layers shows a similar behavior, even though T_c depends strongly on x. We observed a linear temperature dependence of H_c2(T) from 1 to 100 unit-cell thick YBCO layers. The plot of the Pippard coherence length ξ0 versus 1/T_c(R/R_n = 0.1) of 1-8 unit-cell YBCO shows a linear relationship suggesting no appreciable change in Fermi velocity.

Original language	English (US)
Pages (from-to)	75-80
Number of pages	6
Journal	Physica C: Superconductivity and its applications
Volume	266
Issue number	1-2
DOIs	https://doi.org/10.1016/0921-4534(96)00321-8
State	Published - Jul 20 1996

All Science Journal Classification (ASJC) codes

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

Access to Document

10.1016/0921-4534(96)00321-8

Cite this

@article{6817dcf3b45b4116b34c6d0d416ed850,

title = "Superconducting properties of ultra-thin YBa2Cu3O7 layers in (PrxY1-x)Ba2Cu3O7YBa 2Cu3O7(PrxY1-x)Ba 2Cu3O7 trilayer structures",

abstract = "We have studied the superconducting properties of ultra-thin YBa2Cu3O7 layers using trilayers of YBa2Cu3O7 sandwiched between semiconducting (PrxY1-x)Ba2Cu3O7 layers. We find that superconducting parameters such as the transition temperature Tc, the upper critical field Hc2(0), and the Pippard coherence length ξ0 deviate from bulk values when the YBa2Cu3O7 layer is thinner than four unit cells. The dependence of Tc on the thickness of YBa2Cu3O7 with different Pr composition x of the (PrxY1-x)Ba2Cu3O7 adjacent layers shows a similar behavior, even though Tc depends strongly on x. We observed a linear temperature dependence of Hc2(T) from 1 to 100 unit-cell thick YBCO layers. The plot of the Pippard coherence length ξ0 versus 1/Tc(R/Rn = 0.1) of 1-8 unit-cell YBCO shows a linear relationship suggesting no appreciable change in Fermi velocity.",

author = "C. Kwon and Qi Li and I. Takeuchi and Warburton, {P. A.} and C. Doughty and Mao, {S. N.} and Xi, {X. X.} and T. Venkatesan",

year = "1996",

month = jul,

day = "20",

doi = "10.1016/0921-4534(96)00321-8",

language = "English (US)",

volume = "266",

pages = "75--80",

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

issn = "0921-4534",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

T1 - Superconducting properties of ultra-thin YBa2Cu3O7 layers in (PrxY1-x)Ba2Cu3O7YBa 2Cu3O7(PrxY1-x)Ba 2Cu3O7 trilayer structures

AU - Kwon, C.

AU - Li, Qi

AU - Takeuchi, I.

AU - Warburton, P. A.

AU - Doughty, C.

AU - Mao, S. N.

AU - Xi, X. X.

AU - Venkatesan, T.

PY - 1996/7/20

Y1 - 1996/7/20

N2 - We have studied the superconducting properties of ultra-thin YBa2Cu3O7 layers using trilayers of YBa2Cu3O7 sandwiched between semiconducting (PrxY1-x)Ba2Cu3O7 layers. We find that superconducting parameters such as the transition temperature Tc, the upper critical field Hc2(0), and the Pippard coherence length ξ0 deviate from bulk values when the YBa2Cu3O7 layer is thinner than four unit cells. The dependence of Tc on the thickness of YBa2Cu3O7 with different Pr composition x of the (PrxY1-x)Ba2Cu3O7 adjacent layers shows a similar behavior, even though Tc depends strongly on x. We observed a linear temperature dependence of Hc2(T) from 1 to 100 unit-cell thick YBCO layers. The plot of the Pippard coherence length ξ0 versus 1/Tc(R/Rn = 0.1) of 1-8 unit-cell YBCO shows a linear relationship suggesting no appreciable change in Fermi velocity.

AB - We have studied the superconducting properties of ultra-thin YBa2Cu3O7 layers using trilayers of YBa2Cu3O7 sandwiched between semiconducting (PrxY1-x)Ba2Cu3O7 layers. We find that superconducting parameters such as the transition temperature Tc, the upper critical field Hc2(0), and the Pippard coherence length ξ0 deviate from bulk values when the YBa2Cu3O7 layer is thinner than four unit cells. The dependence of Tc on the thickness of YBa2Cu3O7 with different Pr composition x of the (PrxY1-x)Ba2Cu3O7 adjacent layers shows a similar behavior, even though Tc depends strongly on x. We observed a linear temperature dependence of Hc2(T) from 1 to 100 unit-cell thick YBCO layers. The plot of the Pippard coherence length ξ0 versus 1/Tc(R/Rn = 0.1) of 1-8 unit-cell YBCO shows a linear relationship suggesting no appreciable change in Fermi velocity.

UR - http://www.scopus.com/inward/record.url?scp=0038973599&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0038973599&partnerID=8YFLogxK

U2 - 10.1016/0921-4534(96)00321-8

DO - 10.1016/0921-4534(96)00321-8

M3 - Article

AN - SCOPUS:0038973599

SN - 0921-4534

VL - 266

SP - 75

EP - 80

JO - Physica C: Superconductivity and its applications

JF - Physica C: Superconductivity and its applications

IS - 1-2

ER -

Superconducting properties of ultra-thin YBa₂Cu₃O₇ layers in (Pr_xY_1-x)Ba₂Cu₃O₇YBa ₂Cu₃O₇(Pr_xY_1-x)Ba ₂Cu₃O₇ trilayer structures

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this