Pressure studies for 1111 and 11 type iron-based superconductors

Hiroki Takahashi; Hironari Okada; Hiroyuki Takahashi; Yoichi Kamihara; Satoru Matsuishi; Masahiro Hirano; Hideo Hosono; Yoshikazu Mizuguch; Yosihiko Takano

doi:10.1557/proc-1254-l02-02

Pressure studies for 1111 and 11 type iron-based superconductors

Hiroki Takahashi, Hironari Okada, Hiroyuki Takahashi, Yoichi Kamihara, Satoru Matsuishi, Masahiro Hirano, Hideo Hosono, Yoshikazu Mizuguch, Yosihiko Takano

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In the recent development of the studies in iron-based superconductors, high-pressure experiments have been played an important role. Large enhancement of T_c with applying pressure and pressure-induced superconductivity were reported in LaFeAsO_1-xF_x. In this work, electrical, magnetic and structural measurements on 1111 type Ca(Fe_1-xCo _x)AsF and 11 type Fe(Se_1-xTe_x)_0.92 under high pressure have been performed. For Ca(Fe_1-xCo _x)AsF, the substitution of Co suppressed the magnetic and structural transitions and raised superconductivity. Pressure-induced superconductivity was observed for x = 0.0 and 0.05. The highest T_c was obtained in parent compound under high pressure, in contrast to LaFeAsO^1-xF _x. These results suggest that the substitution of Co increases carrier concentration and induces disorder in the FeAs superconducting layer. For FeTe_0.92, pressure-induced superconductivity was not detected under high pressure up to 19 GPa, although the resistive anomaly due to the structural and magnetic phase transition was suppressed by applying pressure.

Original language	English
Title of host publication	Recent Advances and New Discoveries in High-Temperature Superconductivity
Publisher	Materials Research Society
Pages	7-17
Number of pages	11
ISBN (Print)	9781618394903
DOIs	https://doi.org/10.1557/proc-1254-l02-02
Publication status	Published - 2010 Jan 1
Externally published	Yes
Event	2010 MRS Spring Meeting - San Francisco, CA, United States Duration: 2010 Apr 5 → 2010 Apr 9

Publication series

Name	Materials Research Society Symposium Proceedings
Volume	1254
ISSN (Print)	0272-9172

Other

Other	2010 MRS Spring Meeting
Country/Territory	United States
City	San Francisco, CA
Period	10/4/5 → 10/4/9

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1557/proc-1254-l02-02

Cite this

Takahashi, H., Okada, H., Takahashi, H., Kamihara, Y., Matsuishi, S., Hirano, M., Hosono, H., Mizuguch, Y., & Takano, Y. (2010). Pressure studies for 1111 and 11 type iron-based superconductors. In Recent Advances and New Discoveries in High-Temperature Superconductivity (pp. 7-17). (Materials Research Society Symposium Proceedings; Vol. 1254). Materials Research Society. https://doi.org/10.1557/proc-1254-l02-02

Pressure studies for 1111 and 11 type iron-based superconductors. / Takahashi, Hiroki; Okada, Hironari; Takahashi, Hiroyuki et al.
Recent Advances and New Discoveries in High-Temperature Superconductivity. Materials Research Society, 2010. p. 7-17 (Materials Research Society Symposium Proceedings; Vol. 1254).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Takahashi, H, Okada, H, Takahashi, H, Kamihara, Y, Matsuishi, S, Hirano, M, Hosono, H, Mizuguch, Y & Takano, Y 2010, Pressure studies for 1111 and 11 type iron-based superconductors. in Recent Advances and New Discoveries in High-Temperature Superconductivity. Materials Research Society Symposium Proceedings, vol. 1254, Materials Research Society, pp. 7-17, 2010 MRS Spring Meeting, San Francisco, CA, United States, 10/4/5. https://doi.org/10.1557/proc-1254-l02-02

@inproceedings{68980b3910554804bba27d90ff2366f9,

title = "Pressure studies for 1111 and 11 type iron-based superconductors",

abstract = "In the recent development of the studies in iron-based superconductors, high-pressure experiments have been played an important role. Large enhancement of Tc with applying pressure and pressure-induced superconductivity were reported in LaFeAsO1-xFx. In this work, electrical, magnetic and structural measurements on 1111 type Ca(Fe1-xCo x)AsF and 11 type Fe(Se1-xTex)0.92 under high pressure have been performed. For Ca(Fe1-xCo x)AsF, the substitution of Co suppressed the magnetic and structural transitions and raised superconductivity. Pressure-induced superconductivity was observed for x = 0.0 and 0.05. The highest Tc was obtained in parent compound under high pressure, in contrast to LaFeAsO1-xF x. These results suggest that the substitution of Co increases carrier concentration and induces disorder in the FeAs superconducting layer. For FeTe0.92, pressure-induced superconductivity was not detected under high pressure up to 19 GPa, although the resistive anomaly due to the structural and magnetic phase transition was suppressed by applying pressure.",

author = "Hiroki Takahashi and Hironari Okada and Hiroyuki Takahashi and Yoichi Kamihara and Satoru Matsuishi and Masahiro Hirano and Hideo Hosono and Yoshikazu Mizuguch and Yosihiko Takano",

year = "2010",

month = jan,

day = "1",

doi = "10.1557/proc-1254-l02-02",

language = "English",

isbn = "9781618394903",

series = "Materials Research Society Symposium Proceedings",

publisher = "Materials Research Society",

pages = "7--17",

booktitle = "Recent Advances and New Discoveries in High-Temperature Superconductivity",

note = "2010 MRS Spring Meeting ; Conference date: 05-04-2010 Through 09-04-2010",

}

TY - GEN

T1 - Pressure studies for 1111 and 11 type iron-based superconductors

AU - Takahashi, Hiroki

AU - Okada, Hironari

AU - Takahashi, Hiroyuki

AU - Kamihara, Yoichi

AU - Matsuishi, Satoru

AU - Hirano, Masahiro

AU - Hosono, Hideo

AU - Mizuguch, Yoshikazu

AU - Takano, Yosihiko

PY - 2010/1/1

Y1 - 2010/1/1

N2 - In the recent development of the studies in iron-based superconductors, high-pressure experiments have been played an important role. Large enhancement of Tc with applying pressure and pressure-induced superconductivity were reported in LaFeAsO1-xFx. In this work, electrical, magnetic and structural measurements on 1111 type Ca(Fe1-xCo x)AsF and 11 type Fe(Se1-xTex)0.92 under high pressure have been performed. For Ca(Fe1-xCo x)AsF, the substitution of Co suppressed the magnetic and structural transitions and raised superconductivity. Pressure-induced superconductivity was observed for x = 0.0 and 0.05. The highest Tc was obtained in parent compound under high pressure, in contrast to LaFeAsO1-xF x. These results suggest that the substitution of Co increases carrier concentration and induces disorder in the FeAs superconducting layer. For FeTe0.92, pressure-induced superconductivity was not detected under high pressure up to 19 GPa, although the resistive anomaly due to the structural and magnetic phase transition was suppressed by applying pressure.

AB - In the recent development of the studies in iron-based superconductors, high-pressure experiments have been played an important role. Large enhancement of Tc with applying pressure and pressure-induced superconductivity were reported in LaFeAsO1-xFx. In this work, electrical, magnetic and structural measurements on 1111 type Ca(Fe1-xCo x)AsF and 11 type Fe(Se1-xTex)0.92 under high pressure have been performed. For Ca(Fe1-xCo x)AsF, the substitution of Co suppressed the magnetic and structural transitions and raised superconductivity. Pressure-induced superconductivity was observed for x = 0.0 and 0.05. The highest Tc was obtained in parent compound under high pressure, in contrast to LaFeAsO1-xF x. These results suggest that the substitution of Co increases carrier concentration and induces disorder in the FeAs superconducting layer. For FeTe0.92, pressure-induced superconductivity was not detected under high pressure up to 19 GPa, although the resistive anomaly due to the structural and magnetic phase transition was suppressed by applying pressure.

UR - http://www.scopus.com/inward/record.url?scp=84859052508&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84859052508&partnerID=8YFLogxK

U2 - 10.1557/proc-1254-l02-02

DO - 10.1557/proc-1254-l02-02

M3 - Conference contribution

AN - SCOPUS:84859052508

SN - 9781618394903

T3 - Materials Research Society Symposium Proceedings

SP - 7

EP - 17

BT - Recent Advances and New Discoveries in High-Temperature Superconductivity

PB - Materials Research Society

T2 - 2010 MRS Spring Meeting

Y2 - 5 April 2010 through 9 April 2010

ER -

Pressure studies for 1111 and 11 type iron-based superconductors

Abstract

Publication series

Other

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this