Superconductivity induced by bond breaking in the triangular lattice of IrTe 2

Sunseng Pyon; Kazutaka Kudo; Minoru Nohara

doi:10.1143/JPSJ.81.053701

Superconductivity induced by bond breaking in the triangular lattice of IrTe ₂

Sunseng Pyon, Kazutaka Kudo, Minoru Nohara

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

135 Citations (Scopus)

Abstract

IrTe ₂, a layered compound with a triangular iridium lattice, exhibits a structural phase transition at approximately 250 K. This transition is characterized by the formation of Ir-Ir bonds along the b-axis. We found that the breaking of Ir-Ir bonds that occurs in Ir _1-xPt _xTe ₂ results in the appearance of a structural critical point in the T - 0 limit at x _c ≲ 0.035. Although both IrTe ₂ and PtTe ₂ are paramagnetic metals, superconductivity at T _c - 3.1 K is induced by the bond breaking in a narrow range of x ≥ x _c in Ir _1-xPt _xTe ₂. This result indicates that structural fluctuations can be involved in the emergence of superconductivity.

Original language	English
Article number	053701
Journal	journal of the physical society of japan
Volume	81
Issue number	5
DOIs	https://doi.org/10.1143/JPSJ.81.053701
Publication status	Published - May 2012
Externally published	Yes

Keywords

IrTe
Phase diagram
Pt doping
Structural phase transition
Superconductivity
Triangular lattice

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.81.053701

Cite this

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title = "Superconductivity induced by bond breaking in the triangular lattice of IrTe 2 ",

abstract = "IrTe 2, a layered compound with a triangular iridium lattice, exhibits a structural phase transition at approximately 250 K. This transition is characterized by the formation of Ir-Ir bonds along the b-axis. We found that the breaking of Ir-Ir bonds that occurs in Ir 1-xPt xTe 2 results in the appearance of a structural critical point in the T - 0 limit at x c ≲ 0.035. Although both IrTe 2 and PtTe 2 are paramagnetic metals, superconductivity at T c - 3.1 K is induced by the bond breaking in a narrow range of x ≥ x c in Ir 1-xPt xTe 2. This result indicates that structural fluctuations can be involved in the emergence of superconductivity.",

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T1 - Superconductivity induced by bond breaking in the triangular lattice of IrTe 2

AU - Pyon, Sunseng

AU - Kudo, Kazutaka

AU - Nohara, Minoru

PY - 2012/5

Y1 - 2012/5

N2 - IrTe 2, a layered compound with a triangular iridium lattice, exhibits a structural phase transition at approximately 250 K. This transition is characterized by the formation of Ir-Ir bonds along the b-axis. We found that the breaking of Ir-Ir bonds that occurs in Ir 1-xPt xTe 2 results in the appearance of a structural critical point in the T - 0 limit at x c ≲ 0.035. Although both IrTe 2 and PtTe 2 are paramagnetic metals, superconductivity at T c - 3.1 K is induced by the bond breaking in a narrow range of x ≥ x c in Ir 1-xPt xTe 2. This result indicates that structural fluctuations can be involved in the emergence of superconductivity.

AB - IrTe 2, a layered compound with a triangular iridium lattice, exhibits a structural phase transition at approximately 250 K. This transition is characterized by the formation of Ir-Ir bonds along the b-axis. We found that the breaking of Ir-Ir bonds that occurs in Ir 1-xPt xTe 2 results in the appearance of a structural critical point in the T - 0 limit at x c ≲ 0.035. Although both IrTe 2 and PtTe 2 are paramagnetic metals, superconductivity at T c - 3.1 K is induced by the bond breaking in a narrow range of x ≥ x c in Ir 1-xPt xTe 2. This result indicates that structural fluctuations can be involved in the emergence of superconductivity.

KW - IrTe

KW - Phase diagram

KW - Pt doping

KW - Structural phase transition

KW - Superconductivity

KW - Triangular lattice

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