Josephson effect through YBa2Cu3 O7-δ /Au-encapsulated nanogaps

Reza Baghdadi; Simon Abay; Dmitri Golubev; Thilo Bauch; Floriana Lombardi

doi:10.1103/PhysRevB.95.174510

Josephson effect through YBa2Cu3 O7-δ /Au-encapsulated nanogaps

Reza Baghdadi, Simon Abay, Dmitri Golubev, Thilo Bauch, Floriana Lombardi^*

^*Corresponding author for this work

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

2 Citations (Scopus)

112 Downloads (Pure)

Abstract

We successfully fabricated and studied planar superconductor-normal-superconductor (SNS) Josephson junctions made of YBa2Cu3O7-δ (YBCO) high-TC superconductor (S) and Au normal metal (N). The crucial step in fabrication was done by using a Pt/Au bilayer encapsulation of the patterned YBCO nanogap. This procedure preserves the YBCO nanogap from the degradation due to the contact with resists, water, and chemicals involved in further processing for hybrid devices. The junctions exhibit Fraunhofer-like modulation patterns and Shapiro steps when they are irradiated by a rf field. Furthermore, we analyzed the IC(T) characteristics of our hybrid junctions employing a SINI′S (superconductor-insulator-normal conductor-insulator-superconductor) model.

Original language	English
Article number	174510
Pages (from-to)	1-6
Journal	Physical Review B
Volume	95
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevB.95.174510
Publication status	Published - 17 May 2017
MoE publication type	A1 Journal article-refereed

Access to Document

10.1103/PhysRevB.95.174510

PhysRevB.95.174510Final published version, 1.12 MB

Cite this

@article{3e1dc73925344156a91c689306a65a58,

title = "Josephson effect through YBa2Cu3 O7-δ /Au-encapsulated nanogaps",

abstract = "We successfully fabricated and studied planar superconductor-normal-superconductor (SNS) Josephson junctions made of YBa2Cu3O7-δ (YBCO) high-TC superconductor (S) and Au normal metal (N). The crucial step in fabrication was done by using a Pt/Au bilayer encapsulation of the patterned YBCO nanogap. This procedure preserves the YBCO nanogap from the degradation due to the contact with resists, water, and chemicals involved in further processing for hybrid devices. The junctions exhibit Fraunhofer-like modulation patterns and Shapiro steps when they are irradiated by a rf field. Furthermore, we analyzed the IC(T) characteristics of our hybrid junctions employing a SINI′S (superconductor-insulator-normal conductor-insulator-superconductor) model.",

author = "Reza Baghdadi and Simon Abay and Dmitri Golubev and Thilo Bauch and Floriana Lombardi",

year = "2017",

month = may,

day = "17",

doi = "10.1103/PhysRevB.95.174510",

language = "English",

volume = "95",

pages = "1--6",

journal = "Physical Review B (Condensed Matter and Materials Physics)",

issn = "2469-9950",

publisher = "American Physical Society",

number = "17",

}

TY - JOUR

T1 - Josephson effect through YBa2Cu3 O7-δ /Au-encapsulated nanogaps

AU - Baghdadi, Reza

AU - Abay, Simon

AU - Golubev, Dmitri

AU - Bauch, Thilo

AU - Lombardi, Floriana

PY - 2017/5/17

Y1 - 2017/5/17

N2 - We successfully fabricated and studied planar superconductor-normal-superconductor (SNS) Josephson junctions made of YBa2Cu3O7-δ (YBCO) high-TC superconductor (S) and Au normal metal (N). The crucial step in fabrication was done by using a Pt/Au bilayer encapsulation of the patterned YBCO nanogap. This procedure preserves the YBCO nanogap from the degradation due to the contact with resists, water, and chemicals involved in further processing for hybrid devices. The junctions exhibit Fraunhofer-like modulation patterns and Shapiro steps when they are irradiated by a rf field. Furthermore, we analyzed the IC(T) characteristics of our hybrid junctions employing a SINI′S (superconductor-insulator-normal conductor-insulator-superconductor) model.

AB - We successfully fabricated and studied planar superconductor-normal-superconductor (SNS) Josephson junctions made of YBa2Cu3O7-δ (YBCO) high-TC superconductor (S) and Au normal metal (N). The crucial step in fabrication was done by using a Pt/Au bilayer encapsulation of the patterned YBCO nanogap. This procedure preserves the YBCO nanogap from the degradation due to the contact with resists, water, and chemicals involved in further processing for hybrid devices. The junctions exhibit Fraunhofer-like modulation patterns and Shapiro steps when they are irradiated by a rf field. Furthermore, we analyzed the IC(T) characteristics of our hybrid junctions employing a SINI′S (superconductor-insulator-normal conductor-insulator-superconductor) model.

UR - http://www.scopus.com/inward/record.url?scp=85023193947&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.95.174510

DO - 10.1103/PhysRevB.95.174510

M3 - Article

AN - SCOPUS:85023193947

VL - 95

SP - 1

EP - 6

JO - Physical Review B (Condensed Matter and Materials Physics)

JF - Physical Review B (Condensed Matter and Materials Physics)

SN - 2469-9950

IS - 17

M1 - 174510

ER -

Josephson effect through YBa2Cu3 O7-δ /Au-encapsulated nanogaps

Abstract

Access to Document

Other files and links

Fingerprint

Cite this