Emergence of superconductivity at 45 K by lanthanum and phosphorus co-doping of CaFe2 As2

Kazutaka Kudo, Keita Iba, Masaya Takasuga, Yutaka Kitahama, Jun Ichi Matsumura, Masataka Danura, Yoshio Nogami, Minoru Nohara

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

Co-doping of lanthanum and phosphorus in CaFe2 As2 induces superconductivity at 45 K. This superconducting transition temperature is higher than the 38 K transition in Ba 1-x Kx Fe 2 As2, which is the maximum found thus far among the 122 phases. Superconductivity with a substantial shielding volume fraction was observed at 0.12 ≤ x ≤ 0.18 and y = 0.06 in Ca1-x La x Fe2 (As 1-y P y) 2. The superconducting phase of the present system seems to be not adjacent to an antiferromagnetic phase.

Original languageEnglish
Article number1478
JournalScientific Reports
Volume3
DOIs
Publication statusPublished - 2013

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Lanthanum
Phosphorus
Transition Temperature
Superconductivity

ASJC Scopus subject areas

  • General

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Emergence of superconductivity at 45 K by lanthanum and phosphorus co-doping of CaFe2 As2. / Kudo, Kazutaka; Iba, Keita; Takasuga, Masaya; Kitahama, Yutaka; Matsumura, Jun Ichi; Danura, Masataka; Nogami, Yoshio; Nohara, Minoru.

In: Scientific Reports, Vol. 3, 1478, 2013.

Research output: Contribution to journalArticle

Kudo, Kazutaka ; Iba, Keita ; Takasuga, Masaya ; Kitahama, Yutaka ; Matsumura, Jun Ichi ; Danura, Masataka ; Nogami, Yoshio ; Nohara, Minoru. / Emergence of superconductivity at 45 K by lanthanum and phosphorus co-doping of CaFe2 As2. In: Scientific Reports. 2013 ; Vol. 3.
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