A study of the doping dependence of Tc in Ba1- xKxFe2As2 and Sr1- xKxFe2As2 films grown by molecular beam epitaxy

T. Yamagishi; S. Ueda; S. Takeda; S. Takano; A. Mitsuda; M. Naito

doi:10.1016/j.physc.2011.05.152

A study of the doping dependence of T_c in Ba_1- _xK_xFe₂As₂ and Sr_1- _xK_xFe₂As₂ films grown by molecular beam epitaxy

T. Yamagishi, S. Ueda, S. Takeda, S. Takano, A. Mitsuda, M. Naito

Condensed Matter Physics

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

18 Citations (Scopus)

Abstract

Single-crystalline films of superconducting Ba_1- _xK_xFe₂As₂ and Sr_1- _xK_xFe₂As₂ were grown at temperatures below 350 °C under reduced As flux by molecular beam epitaxy. We performed a systematic study of the doping dependence of T_c in Ba _1-xK_xFe₂As₂ for x = 0.0 to 1.0 and Sr_1-xK_xFe₂As₂ for x = 0.0 to 0.5. The highest Tcon (Tcend) so far attained is 38.3 K (35.5 K) at x ∼ 0.3 for Ba_1-xK_xFe₂As ₂, and 33.4 K (31.0 K) at x ∼ 0.4 for Sr_1- _xK_xFe₂As₂. The optimum K-doping level inducing the highest T_c is different in the two systems. The implication of the results is briefly discussed.

Original language	English
Pages (from-to)	1177-1180
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	471
Issue number	21-22
DOIs	https://doi.org/10.1016/j.physc.2011.05.152
Publication status	Published - Nov 2011

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/j.physc.2011.05.152

Cite this

@article{56e15e9c8f4547768a024cfeba3ac161,

title = "A study of the doping dependence of Tc in Ba1- xKxFe2As2 and Sr1- xKxFe2As2 films grown by molecular beam epitaxy",

abstract = "Single-crystalline films of superconducting Ba1- xKxFe2As2 and Sr1- xKxFe2As2 were grown at temperatures below 350 °C under reduced As flux by molecular beam epitaxy. We performed a systematic study of the doping dependence of Tc in Ba 1-xKxFe2As2 for x = 0.0 to 1.0 and Sr1-xKxFe2As2 for x = 0.0 to 0.5. The highest Tcon (Tcend) so far attained is 38.3 K (35.5 K) at x ∼ 0.3 for Ba1-xKxFe2As 2, and 33.4 K (31.0 K) at x ∼ 0.4 for Sr1- xKxFe2As2. The optimum K-doping level inducing the highest Tc is different in the two systems. The implication of the results is briefly discussed.",

author = "T. Yamagishi and S. Ueda and S. Takeda and S. Takano and A. Mitsuda and M. Naito",

note = "Funding Information: The authors thank Yoshi Krockenberger of NTT Basic Research Laboratories for critical reading of our manuscript. This work was supported in part by the New Energy and Industrial Technology Development Organization (NEDO). ",

year = "2011",

month = nov,

doi = "10.1016/j.physc.2011.05.152",

language = "English",

volume = "471",

pages = "1177--1180",

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

issn = "0921-4534",

publisher = "Elsevier B.V.",

number = "21-22",

}

TY - JOUR

T1 - A study of the doping dependence of Tc in Ba1- xKxFe2As2 and Sr1- xKxFe2As2 films grown by molecular beam epitaxy

AU - Yamagishi, T.

AU - Ueda, S.

AU - Takeda, S.

AU - Takano, S.

AU - Mitsuda, A.

AU - Naito, M.

N1 - Funding Information: The authors thank Yoshi Krockenberger of NTT Basic Research Laboratories for critical reading of our manuscript. This work was supported in part by the New Energy and Industrial Technology Development Organization (NEDO).

PY - 2011/11

Y1 - 2011/11

N2 - Single-crystalline films of superconducting Ba1- xKxFe2As2 and Sr1- xKxFe2As2 were grown at temperatures below 350 °C under reduced As flux by molecular beam epitaxy. We performed a systematic study of the doping dependence of Tc in Ba 1-xKxFe2As2 for x = 0.0 to 1.0 and Sr1-xKxFe2As2 for x = 0.0 to 0.5. The highest Tcon (Tcend) so far attained is 38.3 K (35.5 K) at x ∼ 0.3 for Ba1-xKxFe2As 2, and 33.4 K (31.0 K) at x ∼ 0.4 for Sr1- xKxFe2As2. The optimum K-doping level inducing the highest Tc is different in the two systems. The implication of the results is briefly discussed.

AB - Single-crystalline films of superconducting Ba1- xKxFe2As2 and Sr1- xKxFe2As2 were grown at temperatures below 350 °C under reduced As flux by molecular beam epitaxy. We performed a systematic study of the doping dependence of Tc in Ba 1-xKxFe2As2 for x = 0.0 to 1.0 and Sr1-xKxFe2As2 for x = 0.0 to 0.5. The highest Tcon (Tcend) so far attained is 38.3 K (35.5 K) at x ∼ 0.3 for Ba1-xKxFe2As 2, and 33.4 K (31.0 K) at x ∼ 0.4 for Sr1- xKxFe2As2. The optimum K-doping level inducing the highest Tc is different in the two systems. The implication of the results is briefly discussed.

UR - http://www.scopus.com/inward/record.url?scp=80055019659&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80055019659&partnerID=8YFLogxK

U2 - 10.1016/j.physc.2011.05.152

DO - 10.1016/j.physc.2011.05.152

M3 - Article

AN - SCOPUS:80055019659

SN - 0921-4534

VL - 471

SP - 1177

EP - 1180

JO - Physica C: Superconductivity and its applications

JF - Physica C: Superconductivity and its applications

IS - 21-22

ER -

A study of the doping dependence of T_c in Ba_1- _xK_xFe₂As₂ and Sr_1- _xK_xFe₂As₂ films grown by molecular beam epitaxy

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this