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Yamauchi T, Hirata Y, Ueda Y, et al. Pressure-Induced Mott Transition Followed by a 24-K Superconducting Phase in BaFe_{2}S_{3}. Phys Rev Lett. 2015;115(24):246402doi: 10.1103/PhysRevLett.115.246402.
Yamauchi, T., Hirata, Y., Ueda, Y., & Ohgushi, K. (2015). Pressure-Induced Mott Transition Followed by a 24-K Superconducting Phase in BaFe_{2}S_{3}. Physical review letters, 115(24), 246402. https://doi.org/10.1103/PhysRevLett.115.246402
Yamauchi, Touru, et al. "Pressure-Induced Mott Transition Followed by a 24-K Superconducting Phase in BaFe_{2}S_{3}." Physical review letters vol. 115,24 (2015): 246402. doi: https://doi.org/10.1103/PhysRevLett.115.246402
Yamauchi T, Hirata Y, Ueda Y, Ohgushi K. Pressure-Induced Mott Transition Followed by a 24-K Superconducting Phase in BaFe_{2}S_{3}. Phys Rev Lett. 2015 Dec 11;115(24):246402. doi: 10.1103/PhysRevLett.115.246402. Epub 2015 Dec 08. PMID: 26705643.
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Phys Rev Lett. 2015 Dec 11;115(24):246402. doi: 10.1103/PhysRevLett.115.246402. Epub 2015 Dec 08.

Pressure-Induced Mott Transition Followed by a 24-K Superconducting Phase in BaFe_{2}S_{3}.

Physical review letters

Touru Yamauchi, Yasuyuki Hirata, Yutaka Ueda, Kenya Ohgushi

Affiliations

  1. Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan.
  2. Toyota Physical and Chemical Research Institute, 41-1 Yokomichi, Nagakute, Aichi 480-1192, Japan.
  3. Department of Physics, Graduate School of Science, Tohoku University, 6-3, Aramaki Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan.

PMID: 26705643 DOI: 10.1103/PhysRevLett.115.246402

Abstract

We performed high-pressure study for a Mott insulator BaFe_{2}S_{3}, by measuring dc resistivity and ac susceptibility up to 15 GPa. We found that the antiferromagnetic insulating state at the ambient pressure is transformed into a metallic state at the critical pressure, P_{c}=10  GPa, and the superconductivity with the optimum T_{c}=24  K emerges above P_{c}. Furthermore, we found that the metal-insulator transition (Mott transition) boundary terminates at a critical point around 10 GPa and 75 K. The obtained pressure-temperature (P-T) phase diagram is similar to those of the organic and fullerene compounds; namely, BaFe_{2}S_{3} is the first inorganic superconductor in the vicinity of bandwidth control type Mott transition.

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