Superconductivity in the hypervalent compound Ba2Bi(Sb1-xBix)2 with a square-honeycomb lattice with a square-honeycomb lattice

Takeshi Yajima; Fumitaka Takeiri; Yasumasa Nozaki; Zhi Li; Takami Tohyama; Mark A. Green; Yoji Kobayashi; Hiroshi Kageyama

doi:10.7566/JPSJ.83.073705

Superconductivity in the hypervalent compound Ba2Bi(Sb1-xBix)2 with a square-honeycomb lattice with a square-honeycomb lattice

Takeshi Yajima, Fumitaka Takeiri, Yasumasa Nozaki, Zhi Li, Takami Tohyama, Mark A. Green, Yoji Kobayashi, Hiroshi Kageyama

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7 Scopus citations

Abstract

We studied the structural and physical properties of the hypervalent system Ba2Bi(Sb1-xBix)2 (0 ¯ x ¯ 1) with an anisotropic "square-honeycomb" layer. We found that the orthorhombic Ba2BiSb2 (x = 0) shows a charge density wave (CDW) transition at approximately 230K accompanied by a significant elongation of the b-axis, indicating the quasi-one- dimensional nature along the b-axis in its electronic state, as supported by first-principles calculations. This CDW transition is rapidly suppressed with increasing x, leading to the appearance of superconductivity for 0.375 ¯ x ¯ 1. The superconducting transition temperature Tc increases slightly with x and the maximum Tc was 4.4K for Ba2Bi3 (x = 1).

Original language	English (US)
Journal	Journal of the Physical Society of Japan
Volume	83
Issue number	7
DOIs	https://doi.org/10.7566/JPSJ.83.073705
State	Published - Jul 15 2014
Externally published	Yes

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title = "Superconductivity in the hypervalent compound Ba2Bi(Sb1-xBix)2 with a square-honeycomb lattice with a square-honeycomb lattice",

abstract = "We studied the structural and physical properties of the hypervalent system Ba2Bi(Sb1-xBix)2 (0 ¯ x ¯ 1) with an anisotropic {"}square-honeycomb{"} layer. We found that the orthorhombic Ba2BiSb2 (x = 0) shows a charge density wave (CDW) transition at approximately 230K accompanied by a significant elongation of the b-axis, indicating the quasi-one- dimensional nature along the b-axis in its electronic state, as supported by first-principles calculations. This CDW transition is rapidly suppressed with increasing x, leading to the appearance of superconductivity for 0.375 ¯ x ¯ 1. The superconducting transition temperature Tc increases slightly with x and the maximum Tc was 4.4K for Ba2Bi3 (x = 1).",

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T1 - Superconductivity in the hypervalent compound Ba2Bi(Sb1-xBix)2 with a square-honeycomb lattice with a square-honeycomb lattice

AU - Yajima, Takeshi

AU - Takeiri, Fumitaka

AU - Nozaki, Yasumasa

AU - Li, Zhi

AU - Tohyama, Takami

AU - Green, Mark A.

AU - Kobayashi, Yoji

AU - Kageyama, Hiroshi

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

PY - 2014/7/15

Y1 - 2014/7/15

N2 - We studied the structural and physical properties of the hypervalent system Ba2Bi(Sb1-xBix)2 (0 ¯ x ¯ 1) with an anisotropic "square-honeycomb" layer. We found that the orthorhombic Ba2BiSb2 (x = 0) shows a charge density wave (CDW) transition at approximately 230K accompanied by a significant elongation of the b-axis, indicating the quasi-one- dimensional nature along the b-axis in its electronic state, as supported by first-principles calculations. This CDW transition is rapidly suppressed with increasing x, leading to the appearance of superconductivity for 0.375 ¯ x ¯ 1. The superconducting transition temperature Tc increases slightly with x and the maximum Tc was 4.4K for Ba2Bi3 (x = 1).

AB - We studied the structural and physical properties of the hypervalent system Ba2Bi(Sb1-xBix)2 (0 ¯ x ¯ 1) with an anisotropic "square-honeycomb" layer. We found that the orthorhombic Ba2BiSb2 (x = 0) shows a charge density wave (CDW) transition at approximately 230K accompanied by a significant elongation of the b-axis, indicating the quasi-one- dimensional nature along the b-axis in its electronic state, as supported by first-principles calculations. This CDW transition is rapidly suppressed with increasing x, leading to the appearance of superconductivity for 0.375 ¯ x ¯ 1. The superconducting transition temperature Tc increases slightly with x and the maximum Tc was 4.4K for Ba2Bi3 (x = 1).

UR - https://journals.jps.jp/doi/10.7566/JPSJ.83.073705

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DO - 10.7566/JPSJ.83.073705

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SN - 1347-4073

VL - 83

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

IS - 7

ER -

Superconductivity in the hypervalent compound Ba2Bi(Sb1-xBix)2 with a square-honeycomb lattice with a square-honeycomb lattice

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