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We report the measurements on the ramp-edge type Josephson and quasiparticle tunnel junctions with the different interface angle geometry using high-*Tc* YBa_{2}Cu_{3}O_{7-y} (YBCO) electrodes. The YBCO/I/Ag tunnel junctions with different crystal-interface boundary angles are fabricated for the investigation of zero bias conductance peak. The angle dependent zero bias conductance peak typical to a *d*_{x2-y2}-wave superconductor is observable. For Josephson junctions, YBCO ramp-edge junctions with different *ab*-plane electrodes relatively rotated by 45_{2} seed-layer technique. The temperature dependence of the maximum Josephson current for YBCO/PBCO/YBCO junctions (PBCO: PrBa_{2}Cu_{3}O_{7-y}) exhibits angle-dependent behavior, qualitatively different from the Ambegaokar-Baratoff prediction. Under microwave irradiation of 9 GHz, the Shapiro steps appear at integer and/or half integer multiples of the voltage satisfying Josephson voltage-frequency relation, whose behavior depends on the sample angle geometry. The results are reasonably interpreted by the *d*_{x2-y2}-wave theory by taking the zero energy state into account.

- Publication
- IEICE TRANSACTIONS on Electronics Vol.E85-C No.3 pp.789-796

- Publication Date
- 2002/03/01

- Publicized

- Online ISSN

- DOI

- Type of Manuscript
- Special Section INVITED PAPER (Special Issue on Superconductive Electronics)

- Category
- Novel Devices and Device Physics

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Ienari IGUCHI, Takuya IMAIZUMI, Tomoyuki KAWAI, Yukio TANAKA, Satoshi KASHIWAYA, "Josephson and Quasiparticle Tunneling in Anisotropic High-Tc d-Wave Superconductors" in IEICE TRANSACTIONS on Electronics,
vol. E85-C, no. 3, pp. 789-796, March 2002, doi: .

Abstract: We report the measurements on the ramp-edge type Josephson and quasiparticle tunnel junctions with the different interface angle geometry using high-*Tc* YBa_{2}Cu_{3}O_{7-y} (YBCO) electrodes. The YBCO/I/Ag tunnel junctions with different crystal-interface boundary angles are fabricated for the investigation of zero bias conductance peak. The angle dependent zero bias conductance peak typical to a *d*_{x2-y2}-wave superconductor is observable. For Josephson junctions, YBCO ramp-edge junctions with different *ab*-plane electrodes relatively rotated by 45_{2} seed-layer technique. The temperature dependence of the maximum Josephson current for YBCO/PBCO/YBCO junctions (PBCO: PrBa_{2}Cu_{3}O_{7-y}) exhibits angle-dependent behavior, qualitatively different from the Ambegaokar-Baratoff prediction. Under microwave irradiation of 9 GHz, the Shapiro steps appear at integer and/or half integer multiples of the voltage satisfying Josephson voltage-frequency relation, whose behavior depends on the sample angle geometry. The results are reasonably interpreted by the *d*_{x2-y2}-wave theory by taking the zero energy state into account.

URL: https://global.ieice.org/en_transactions/electronics/10.1587/e85-c_3_789/_p

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@ARTICLE{e85-c_3_789,

author={Ienari IGUCHI, Takuya IMAIZUMI, Tomoyuki KAWAI, Yukio TANAKA, Satoshi KASHIWAYA, },

journal={IEICE TRANSACTIONS on Electronics},

title={Josephson and Quasiparticle Tunneling in Anisotropic High-Tc d-Wave Superconductors},

year={2002},

volume={E85-C},

number={3},

pages={789-796},

abstract={We report the measurements on the ramp-edge type Josephson and quasiparticle tunnel junctions with the different interface angle geometry using high-*Tc* YBa_{2}Cu_{3}O_{7-y} (YBCO) electrodes. The YBCO/I/Ag tunnel junctions with different crystal-interface boundary angles are fabricated for the investigation of zero bias conductance peak. The angle dependent zero bias conductance peak typical to a *d*_{x2-y2}-wave superconductor is observable. For Josephson junctions, YBCO ramp-edge junctions with different *ab*-plane electrodes relatively rotated by 45_{2} seed-layer technique. The temperature dependence of the maximum Josephson current for YBCO/PBCO/YBCO junctions (PBCO: PrBa_{2}Cu_{3}O_{7-y}) exhibits angle-dependent behavior, qualitatively different from the Ambegaokar-Baratoff prediction. Under microwave irradiation of 9 GHz, the Shapiro steps appear at integer and/or half integer multiples of the voltage satisfying Josephson voltage-frequency relation, whose behavior depends on the sample angle geometry. The results are reasonably interpreted by the *d*_{x2-y2}-wave theory by taking the zero energy state into account.

keywords={},

doi={},

ISSN={},

month={March},}

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TY - JOUR

TI - Josephson and Quasiparticle Tunneling in Anisotropic High-Tc d-Wave Superconductors

T2 - IEICE TRANSACTIONS on Electronics

SP - 789

EP - 796

AU - Ienari IGUCHI

AU - Takuya IMAIZUMI

AU - Tomoyuki KAWAI

AU - Yukio TANAKA

AU - Satoshi KASHIWAYA

PY - 2002

DO -

JO - IEICE TRANSACTIONS on Electronics

SN -

VL - E85-C

IS - 3

JA - IEICE TRANSACTIONS on Electronics

Y1 - March 2002

AB - We report the measurements on the ramp-edge type Josephson and quasiparticle tunnel junctions with the different interface angle geometry using high-*Tc* YBa_{2}Cu_{3}O_{7-y} (YBCO) electrodes. The YBCO/I/Ag tunnel junctions with different crystal-interface boundary angles are fabricated for the investigation of zero bias conductance peak. The angle dependent zero bias conductance peak typical to a *d*_{x2-y2}-wave superconductor is observable. For Josephson junctions, YBCO ramp-edge junctions with different *ab*-plane electrodes relatively rotated by 45_{2} seed-layer technique. The temperature dependence of the maximum Josephson current for YBCO/PBCO/YBCO junctions (PBCO: PrBa_{2}Cu_{3}O_{7-y}) exhibits angle-dependent behavior, qualitatively different from the Ambegaokar-Baratoff prediction. Under microwave irradiation of 9 GHz, the Shapiro steps appear at integer and/or half integer multiples of the voltage satisfying Josephson voltage-frequency relation, whose behavior depends on the sample angle geometry. The results are reasonably interpreted by the *d*_{x2-y2}-wave theory by taking the zero energy state into account.

ER -