Pressure-Induced Superconducting Phase with Structural Phase Transitions in EuSr2Bi2S2Se2F4

Kento Ishigaki; Jun Gouchi; Kiyoshi Torizuka; Sonachalam Arumugam; Ashok Kumar Ganguli; Zeba Haque; Ganesan Kalaiselven; Gohil Singh Thakur; Yoshiya Uwatoko

doi:10.7566/JPSJ.93.073702

Pressure-Induced Superconducting Phase with Structural Phase Transitions in EuSr₂Bi₂S₂Se₂F₄

Kento Ishigaki, Jun Gouchi, Kiyoshi Torizuka, Sonachalam Arumugam, Ashok Kumar Ganguli, Zeba Haque, Ganesan Kalaiselven, Gohil Singh Thakur, Yoshiya Uwatoko

物理工学科

研究成果: Article › 査読

1 被引用数 (Scopus)

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We have reported the X-ray diffraction patterns and resistivity measurements of the BiS₂-based superconductor EuSr₂Bi₂S₂Se₂F₄ up to 15 GPa. High-pressure apparatuses include diamond anvil cells, piston cylinder cells, and cubic anvil cells. With applying pressure, peaks of T_c = 3.26 K (at 0.8 GPa) and T_c = 2.35 K (at 4 GPa) were observed by appear new superconducting phase. A new superconducting phase appeared owing to the structural phase transitions. At 7 GPa, superconductivity was not observed down to 2 K but above 8 GPa, superconductivity was observed near 3 K. Besides, we have also confirmed that superconductivity above 8.0 GPa also appeared with a structural phase transition (at 8.35 GPa). There are four types of superconducting phases below 12 GPa. Therefore, EuSr₂Bi₂S₂Se₂F₄ has complex superconducting phases, which can be attributed to the structural phase transitions.

本文言語	English
論文番号	073702
ジャーナル	journal of the physical society of japan
巻	93
号	7
DOI	https://doi.org/10.7566/JPSJ.93.073702
出版ステータス	Published - 15 7月 2024

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title = "Pressure-Induced Superconducting Phase with Structural Phase Transitions in EuSr2Bi2S2Se2F4",

abstract = "We have reported the X-ray diffraction patterns and resistivity measurements of the BiS2-based superconductor EuSr2Bi2S2Se2F4 up to 15 GPa. High-pressure apparatuses include diamond anvil cells, piston cylinder cells, and cubic anvil cells. With applying pressure, peaks of Tc = 3.26 K (at 0.8 GPa) and Tc = 2.35 K (at 4 GPa) were observed by appear new superconducting phase. A new superconducting phase appeared owing to the structural phase transitions. At 7 GPa, superconductivity was not observed down to 2 K but above 8 GPa, superconductivity was observed near 3 K. Besides, we have also confirmed that superconductivity above 8.0 GPa also appeared with a structural phase transition (at 8.35 GPa). There are four types of superconducting phases below 12 GPa. Therefore, EuSr2Bi2S2Se2F4 has complex superconducting phases, which can be attributed to the structural phase transitions.",

author = "Kento Ishigaki and Jun Gouchi and Kiyoshi Torizuka and Sonachalam Arumugam and Ganguli, \{Ashok Kumar\} and Zeba Haque and Ganesan Kalaiselven and Thakur, \{Gohil Singh\} and Yoshiya Uwatoko",

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doi = "10.7566/JPSJ.93.073702",

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T1 - Pressure-Induced Superconducting Phase with Structural Phase Transitions in EuSr2Bi2S2Se2F4

AU - Ishigaki, Kento

AU - Gouchi, Jun

AU - Torizuka, Kiyoshi

AU - Arumugam, Sonachalam

AU - Ganguli, Ashok Kumar

AU - Haque, Zeba

AU - Kalaiselven, Ganesan

AU - Thakur, Gohil Singh

AU - Uwatoko, Yoshiya

PY - 2024/7/15

Y1 - 2024/7/15

N2 - We have reported the X-ray diffraction patterns and resistivity measurements of the BiS2-based superconductor EuSr2Bi2S2Se2F4 up to 15 GPa. High-pressure apparatuses include diamond anvil cells, piston cylinder cells, and cubic anvil cells. With applying pressure, peaks of Tc = 3.26 K (at 0.8 GPa) and Tc = 2.35 K (at 4 GPa) were observed by appear new superconducting phase. A new superconducting phase appeared owing to the structural phase transitions. At 7 GPa, superconductivity was not observed down to 2 K but above 8 GPa, superconductivity was observed near 3 K. Besides, we have also confirmed that superconductivity above 8.0 GPa also appeared with a structural phase transition (at 8.35 GPa). There are four types of superconducting phases below 12 GPa. Therefore, EuSr2Bi2S2Se2F4 has complex superconducting phases, which can be attributed to the structural phase transitions.

AB - We have reported the X-ray diffraction patterns and resistivity measurements of the BiS2-based superconductor EuSr2Bi2S2Se2F4 up to 15 GPa. High-pressure apparatuses include diamond anvil cells, piston cylinder cells, and cubic anvil cells. With applying pressure, peaks of Tc = 3.26 K (at 0.8 GPa) and Tc = 2.35 K (at 4 GPa) were observed by appear new superconducting phase. A new superconducting phase appeared owing to the structural phase transitions. At 7 GPa, superconductivity was not observed down to 2 K but above 8 GPa, superconductivity was observed near 3 K. Besides, we have also confirmed that superconductivity above 8.0 GPa also appeared with a structural phase transition (at 8.35 GPa). There are four types of superconducting phases below 12 GPa. Therefore, EuSr2Bi2S2Se2F4 has complex superconducting phases, which can be attributed to the structural phase transitions.

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DO - 10.7566/JPSJ.93.073702

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SN - 0031-9015

VL - 93

JO - journal of the physical society of japan

JF - journal of the physical society of japan

IS - 7

M1 - 073702

ER -

Pressure-Induced Superconducting Phase with Structural Phase Transitions in EuSr2Bi2S2Se2F4

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Pressure-Induced Superconducting Phase with Structural Phase Transitions in EuSr₂Bi₂S₂Se₂F₄