Two superconducting phases in the isovalent solid solutions BaTi 2Pn2O (Pn = As, Sb, and Bi)

Takeshi Yajima; Kousuke Nakano; Fumitaka Takeiri; Yasumasa Nozaki; Yoji Kobayashi; Hiroshi Kageyama

doi:10.7566/JPSJ.82.033705

Two superconducting phases in the isovalent solid solutions BaTi 2Pn2O (Pn = As, Sb, and Bi)

Takeshi Yajima, Kousuke Nakano, Fumitaka Takeiri, Yasumasa Nozaki, Yoji Kobayashi, Hiroshi Kageyama

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Abstract

We have recently reported two superconductors with the d1 square lattice, BaTi2Sb2O (Tc = 1:2 K) and BaTi 2Bi2O (Tc = 4:6 K). In order to find a clue behind the superconductivity of these materials, we synthesized isovalent solid solutions of BaTi2(As1-xSbx)2O and BaTi 2(Sb1-yBiy)2O. Despite Vegard's law behavior in cell constants, a two-dome structure in Tc was observed with two distinct superconducting phases ("0:9 ≤ x; y ≤ 0:3" and "0:6 ≤ y ≤ 1") separated by a metallic phase. This result implies a multiband nature at the Fermi surface in BaTi2Pn 2O. © 2013 The Physical Society of Japan.

Original language	English (US)
Journal	Journal of the Physical Society of Japan
Volume	82
Issue number	3
DOIs	https://doi.org/10.7566/JPSJ.82.033705
State	Published - Mar 1 2013
Externally published	Yes

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General Physics and Astronomy

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title = "Two superconducting phases in the isovalent solid solutions BaTi 2Pn2O (Pn = As, Sb, and Bi)",

abstract = "We have recently reported two superconductors with the d1 square lattice, BaTi2Sb2O (Tc = 1:2 K) and BaTi 2Bi2O (Tc = 4:6 K). In order to find a clue behind the superconductivity of these materials, we synthesized isovalent solid solutions of BaTi2(As1-xSbx)2O and BaTi 2(Sb1-yBiy)2O. Despite Vegard's law behavior in cell constants, a two-dome structure in Tc was observed with two distinct superconducting phases ({"}0:9 ≤ x; y ≤ 0:3{"} and {"}0:6 ≤ y ≤ 1{"}) separated by a metallic phase. This result implies a multiband nature at the Fermi surface in BaTi2Pn 2O. {\textcopyright} 2013 The Physical Society of Japan.",

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T1 - Two superconducting phases in the isovalent solid solutions BaTi 2Pn2O (Pn = As, Sb, and Bi)

AU - Yajima, Takeshi

AU - Nakano, Kousuke

AU - Takeiri, Fumitaka

AU - Nozaki, Yasumasa

AU - Kobayashi, Yoji

AU - Kageyama, Hiroshi

N1 - Generated from Scopus record by KAUST IRTS on 2022-09-13

PY - 2013/3/1

Y1 - 2013/3/1

N2 - We have recently reported two superconductors with the d1 square lattice, BaTi2Sb2O (Tc = 1:2 K) and BaTi 2Bi2O (Tc = 4:6 K). In order to find a clue behind the superconductivity of these materials, we synthesized isovalent solid solutions of BaTi2(As1-xSbx)2O and BaTi 2(Sb1-yBiy)2O. Despite Vegard's law behavior in cell constants, a two-dome structure in Tc was observed with two distinct superconducting phases ("0:9 ≤ x; y ≤ 0:3" and "0:6 ≤ y ≤ 1") separated by a metallic phase. This result implies a multiband nature at the Fermi surface in BaTi2Pn 2O. © 2013 The Physical Society of Japan.

AB - We have recently reported two superconductors with the d1 square lattice, BaTi2Sb2O (Tc = 1:2 K) and BaTi 2Bi2O (Tc = 4:6 K). In order to find a clue behind the superconductivity of these materials, we synthesized isovalent solid solutions of BaTi2(As1-xSbx)2O and BaTi 2(Sb1-yBiy)2O. Despite Vegard's law behavior in cell constants, a two-dome structure in Tc was observed with two distinct superconducting phases ("0:9 ≤ x; y ≤ 0:3" and "0:6 ≤ y ≤ 1") separated by a metallic phase. This result implies a multiband nature at the Fermi surface in BaTi2Pn 2O. © 2013 The Physical Society of Japan.

UR - http://journals.jps.jp/doi/10.7566/JPSJ.82.033705

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SN - 0031-9015

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JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

IS - 3

ER -

Two superconducting phases in the isovalent solid solutions BaTi 2Pn2O (Pn = As, Sb, and Bi)

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