Comparative ARPES study on iron-platinum-arsenide superconductor Ca10(Pt4As8)(Fe2-xPtxAs2)5 (x = 0.25 and 0.42)

Masanori Sunagawa; Rikiya Yoshida; Toshihiko Ishiga; Koji Tsubota; Taihei Jabuchi; Junki Sonoyama; Satomi Kakiya; Daisuke Mitsuoka; Kazutaka Kudo; Minoru Nohara; Kanta Ono; Hiroshi Kumigashira; Tamio Oguchi; Takanori Wakita; Yuji Muraoka; Takayoshi Yokoya

doi:10.7566/JPSJ.84.055001

Comparative ARPES study on iron-platinum-arsenide superconductor Ca₁₀(Pt₄As₈)(Fe_2-xPt_xAs₂)₅ (x = 0.25 and 0.42)

Masanori Sunagawa, Rikiya Yoshida, Toshihiko Ishiga, Koji Tsubota, Taihei Jabuchi, Junki Sonoyama, Satomi Kakiya, Daisuke Mitsuoka, Kazutaka Kudo, Minoru Nohara, Kanta Ono, Hiroshi Kumigashira, Tamio Oguchi, Takanori Wakita, Yuji Muraoka, Takayoshi Yokoya

IMRAM - Division of Inorganic Material Research

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

1 Citation (Scopus)

Abstract

We studied the electronic structure of Ca₁₀(Pt₄As₈)(Fe_2-xPt_xAs₂)₅ for two platinum concentrations with different T_c using ARPES. From the carrier number estimated from the areas of FS sheets, we found that the Pt substitution induces electron doping into the Fe₂As₂ layers (effectively two electrons per Pt atom). In addition, we found that the FS nesting condition in x = 0.25 is stronger than that in x = 0.42, indicating close correlation between the FS nesting and T_c.

Original language	English
Article number	055001
Journal	Journal of the Physical Society of Japan
Volume	84
Issue number	5
DOIs	https://doi.org/10.7566/JPSJ.84.055001
Publication status	Published - 2015 May 15

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Sunagawa, M., Yoshida, R., Ishiga, T., Tsubota, K., Jabuchi, T., Sonoyama, J., Kakiya, S., Mitsuoka, D., Kudo, K., Nohara, M., Ono, K., Kumigashira, H., Oguchi, T., Wakita, T., Muraoka, Y., & Yokoya, T. (2015). Comparative ARPES study on iron-platinum-arsenide superconductor Ca₁₀(Pt₄As₈)(Fe_2-xPt_xAs₂)₅ (x = 0.25 and 0.42). Journal of the Physical Society of Japan, 84(5), Article 055001. https://doi.org/10.7566/JPSJ.84.055001

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title = "Comparative ARPES study on iron-platinum-arsenide superconductor Ca10(Pt4As8)(Fe2-xPtxAs2)5 (x = 0.25 and 0.42)",

abstract = "We studied the electronic structure of Ca10(Pt4As8)(Fe2-xPtxAs2)5 for two platinum concentrations with different Tc using ARPES. From the carrier number estimated from the areas of FS sheets, we found that the Pt substitution induces electron doping into the Fe2As2 layers (effectively two electrons per Pt atom). In addition, we found that the FS nesting condition in x = 0.25 is stronger than that in x = 0.42, indicating close correlation between the FS nesting and Tc.",

author = "Masanori Sunagawa and Rikiya Yoshida and Toshihiko Ishiga and Koji Tsubota and Taihei Jabuchi and Junki Sonoyama and Satomi Kakiya and Daisuke Mitsuoka and Kazutaka Kudo and Minoru Nohara and Kanta Ono and Hiroshi Kumigashira and Tamio Oguchi and Takanori Wakita and Yuji Muraoka and Takayoshi Yokoya",

note = "Publisher Copyright: {\textcopyright}2015 The Physical Society of Japan.",

year = "2015",

month = may,

day = "15",

doi = "10.7566/JPSJ.84.055001",

language = "English",

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Sunagawa, M, Yoshida, R, Ishiga, T, Tsubota, K, Jabuchi, T, Sonoyama, J, Kakiya, S, Mitsuoka, D, Kudo, K, Nohara, M, Ono, K, Kumigashira, H, Oguchi, T, Wakita, T, Muraoka, Y & Yokoya, T 2015, 'Comparative ARPES study on iron-platinum-arsenide superconductor Ca₁₀(Pt₄As₈)(Fe_2-xPt_xAs₂)₅ (x = 0.25 and 0.42)', Journal of the Physical Society of Japan, vol. 84, no. 5, 055001. https://doi.org/10.7566/JPSJ.84.055001

TY - JOUR

T1 - Comparative ARPES study on iron-platinum-arsenide superconductor Ca10(Pt4As8)(Fe2-xPtxAs2)5 (x = 0.25 and 0.42)

AU - Sunagawa, Masanori

AU - Yoshida, Rikiya

AU - Ishiga, Toshihiko

AU - Tsubota, Koji

AU - Jabuchi, Taihei

AU - Sonoyama, Junki

AU - Kakiya, Satomi

AU - Mitsuoka, Daisuke

AU - Kudo, Kazutaka

AU - Nohara, Minoru

AU - Ono, Kanta

AU - Kumigashira, Hiroshi

AU - Oguchi, Tamio

AU - Wakita, Takanori

AU - Muraoka, Yuji

AU - Yokoya, Takayoshi

PY - 2015/5/15

Y1 - 2015/5/15

N2 - We studied the electronic structure of Ca10(Pt4As8)(Fe2-xPtxAs2)5 for two platinum concentrations with different Tc using ARPES. From the carrier number estimated from the areas of FS sheets, we found that the Pt substitution induces electron doping into the Fe2As2 layers (effectively two electrons per Pt atom). In addition, we found that the FS nesting condition in x = 0.25 is stronger than that in x = 0.42, indicating close correlation between the FS nesting and Tc.

AB - We studied the electronic structure of Ca10(Pt4As8)(Fe2-xPtxAs2)5 for two platinum concentrations with different Tc using ARPES. From the carrier number estimated from the areas of FS sheets, we found that the Pt substitution induces electron doping into the Fe2As2 layers (effectively two electrons per Pt atom). In addition, we found that the FS nesting condition in x = 0.25 is stronger than that in x = 0.42, indicating close correlation between the FS nesting and Tc.

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AN - SCOPUS:84928723809

SN - 0031-9015

VL - 84

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

IS - 5

M1 - 055001

ER -

Comparative ARPES study on iron-platinum-arsenide superconductor Ca₁₀(Pt₄As₈)(Fe_2-xPt_xAs₂)₅ (x = 0.25 and 0.42)

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