Superconducting phase diagram in Ca2-xNaxCuO 2Cl2-yBry

Yuji Zenitani; Teruhiko Suzuki; Hirokazu Kawashima; Jun Akimitsu

doi:10.1016/j.physc.2004.12.002

Superconducting phase diagram in Ca_2-xNa_xCuO ₂Cl_2-yBr_y

Yuji Zenitani, Teruhiko Suzuki, Hirokazu Kawashima, Jun Akimitsu

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

4 Citations (Scopus)

Abstract

Ca₂CuO₂Cl_2-yBr_y (0 ≤ y ≤ 2) has the K₂NiF₄-type structure with halogens (Cl and Br) at their apical sites and superconductivity can be achieved by substituting Ca²⁺ sites with Na⁺. We have succeeded in making a comprehensive superconducting phase diagram of Ca_2-xNa _xCuO₂Cl_2-yBr_y by focusing on special attention to the relationship between the superconductivity and the Cu and Cl/Br distance in Ca_2-xNa_xCuO₂Cl _2-yBr_y. We were successful in continuously changing the length of c-axis, which is closely related to the distance between the apical site and the CuO₂ plane, or the distance between Cu and Cl/Br. Without changing the bonding distance between Cu and O in the CuO₂ plane. This is the first example of this kind of control in cuprate superconductors.

Original language	English
Pages (from-to)	32-40
Number of pages	9
Journal	Physica C: Superconductivity and its applications
Volume	419
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physc.2004.12.002
Publication status	Published - Feb 15 2005
Externally published	Yes

ASJC Scopus subject areas

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

Access to Document

10.1016/j.physc.2004.12.002

Cite this

@article{942709fdb7f84e32b11d1c919e0574c9,

title = "Superconducting phase diagram in Ca2-xNaxCuO 2Cl2-yBry",

abstract = "Ca2CuO2Cl2-yBry (0 ≤ y ≤ 2) has the K2NiF4-type structure with halogens (Cl and Br) at their apical sites and superconductivity can be achieved by substituting Ca2+ sites with Na+. We have succeeded in making a comprehensive superconducting phase diagram of Ca2-xNa xCuO2Cl2-yBry by focusing on special attention to the relationship between the superconductivity and the Cu and Cl/Br distance in Ca2-xNaxCuO2Cl 2-yBry. We were successful in continuously changing the length of c-axis, which is closely related to the distance between the apical site and the CuO2 plane, or the distance between Cu and Cl/Br. Without changing the bonding distance between Cu and O in the CuO2 plane. This is the first example of this kind of control in cuprate superconductors.",

author = "Yuji Zenitani and Teruhiko Suzuki and Hirokazu Kawashima and Jun Akimitsu",

note = "Funding Information: This study was supported by a grant for scientific research, the 21st Century COE program of the Ministry of Education, Culture, Sports, Science and Technology.",

year = "2005",

month = feb,

day = "15",

doi = "10.1016/j.physc.2004.12.002",

language = "English",

volume = "419",

pages = "32--40",

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

issn = "0921-4534",

publisher = "Elsevier",

number = "1-2",

}

TY - JOUR

T1 - Superconducting phase diagram in Ca2-xNaxCuO 2Cl2-yBry

AU - Zenitani, Yuji

AU - Suzuki, Teruhiko

AU - Kawashima, Hirokazu

AU - Akimitsu, Jun

N1 - Funding Information: This study was supported by a grant for scientific research, the 21st Century COE program of the Ministry of Education, Culture, Sports, Science and Technology.

PY - 2005/2/15

Y1 - 2005/2/15

N2 - Ca2CuO2Cl2-yBry (0 ≤ y ≤ 2) has the K2NiF4-type structure with halogens (Cl and Br) at their apical sites and superconductivity can be achieved by substituting Ca2+ sites with Na+. We have succeeded in making a comprehensive superconducting phase diagram of Ca2-xNa xCuO2Cl2-yBry by focusing on special attention to the relationship between the superconductivity and the Cu and Cl/Br distance in Ca2-xNaxCuO2Cl 2-yBry. We were successful in continuously changing the length of c-axis, which is closely related to the distance between the apical site and the CuO2 plane, or the distance between Cu and Cl/Br. Without changing the bonding distance between Cu and O in the CuO2 plane. This is the first example of this kind of control in cuprate superconductors.

AB - Ca2CuO2Cl2-yBry (0 ≤ y ≤ 2) has the K2NiF4-type structure with halogens (Cl and Br) at their apical sites and superconductivity can be achieved by substituting Ca2+ sites with Na+. We have succeeded in making a comprehensive superconducting phase diagram of Ca2-xNa xCuO2Cl2-yBry by focusing on special attention to the relationship between the superconductivity and the Cu and Cl/Br distance in Ca2-xNaxCuO2Cl 2-yBry. We were successful in continuously changing the length of c-axis, which is closely related to the distance between the apical site and the CuO2 plane, or the distance between Cu and Cl/Br. Without changing the bonding distance between Cu and O in the CuO2 plane. This is the first example of this kind of control in cuprate superconductors.

UR - http://www.scopus.com/inward/record.url?scp=15744395162&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=15744395162&partnerID=8YFLogxK

U2 - 10.1016/j.physc.2004.12.002

DO - 10.1016/j.physc.2004.12.002

M3 - Article

AN - SCOPUS:15744395162

VL - 419

SP - 32

EP - 40

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

SN - 0921-4534

IS - 1-2

ER -

Superconducting phase diagram in Ca_2-xNa_xCuO ₂Cl_2-yBr_y

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this