Fragile structural transition in Mo3Sb7

J. Q. Yan; M. A. McGuire; A. F. May; D. Parker; D. G. Mandrus; B. C. Sales

doi:10.1103/PhysRevB.92.064507

Fragile structural transition in Mo3Sb7

J. Q. Yan
, M. A. McGuire
, A. F. May
, D. Parker
, D. G. Mandrus
, B. C. Sales

Correlated Electron Materials

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

5 Scopus citations

Abstract

Mo3Sb7 single crystals lightly doped with Cr, Ru, or Te are studied in order to explore the interplay between superconductivity, magnetism, and the cubic-tetragonal structural transition. The structural transition at 53 K is extremely sensitive to Ru or Te substitution which introduces additional electrons, but robust against Cr substitution. No sign of a structural transition was observed in superconducting Mo2.91Ru0.09Sb7 and Mo3Sb6.975Te0.025. In contrast, 3 at.% Cr doping only slightly suppresses the structural transition to 48 K while leaving no trace of superconductivity above 1.8 K. Analysis of magnetic properties suggests that the interdimer interaction in Mo3Sb7 is near a critical value and essential for the structural transition. All dopants suppress the superconductivity of Mo3Sb7. The tetragonal structure is not necessary for superconductivity.

Original language	English
Article number	064507
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	92
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.92.064507
State	Published - Aug 10 2015

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title = "Fragile structural transition in Mo3Sb7",

abstract = "Mo3Sb7 single crystals lightly doped with Cr, Ru, or Te are studied in order to explore the interplay between superconductivity, magnetism, and the cubic-tetragonal structural transition. The structural transition at 53 K is extremely sensitive to Ru or Te substitution which introduces additional electrons, but robust against Cr substitution. No sign of a structural transition was observed in superconducting Mo2.91Ru0.09Sb7 and Mo3Sb6.975Te0.025. In contrast, 3 at.\% Cr doping only slightly suppresses the structural transition to 48 K while leaving no trace of superconductivity above 1.8 K. Analysis of magnetic properties suggests that the interdimer interaction in Mo3Sb7 is near a critical value and essential for the structural transition. All dopants suppress the superconductivity of Mo3Sb7. The tetragonal structure is not necessary for superconductivity.",

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T1 - Fragile structural transition in Mo3Sb7

AU - Yan, J. Q.

AU - McGuire, M. A.

AU - May, A. F.

AU - Parker, D.

AU - Mandrus, D. G.

AU - Sales, B. C.

PY - 2015/8/10

Y1 - 2015/8/10

N2 - Mo3Sb7 single crystals lightly doped with Cr, Ru, or Te are studied in order to explore the interplay between superconductivity, magnetism, and the cubic-tetragonal structural transition. The structural transition at 53 K is extremely sensitive to Ru or Te substitution which introduces additional electrons, but robust against Cr substitution. No sign of a structural transition was observed in superconducting Mo2.91Ru0.09Sb7 and Mo3Sb6.975Te0.025. In contrast, 3 at.% Cr doping only slightly suppresses the structural transition to 48 K while leaving no trace of superconductivity above 1.8 K. Analysis of magnetic properties suggests that the interdimer interaction in Mo3Sb7 is near a critical value and essential for the structural transition. All dopants suppress the superconductivity of Mo3Sb7. The tetragonal structure is not necessary for superconductivity.

AB - Mo3Sb7 single crystals lightly doped with Cr, Ru, or Te are studied in order to explore the interplay between superconductivity, magnetism, and the cubic-tetragonal structural transition. The structural transition at 53 K is extremely sensitive to Ru or Te substitution which introduces additional electrons, but robust against Cr substitution. No sign of a structural transition was observed in superconducting Mo2.91Ru0.09Sb7 and Mo3Sb6.975Te0.025. In contrast, 3 at.% Cr doping only slightly suppresses the structural transition to 48 K while leaving no trace of superconductivity above 1.8 K. Analysis of magnetic properties suggests that the interdimer interaction in Mo3Sb7 is near a critical value and essential for the structural transition. All dopants suppress the superconductivity of Mo3Sb7. The tetragonal structure is not necessary for superconductivity.

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DO - 10.1103/PhysRevB.92.064507

M3 - Article

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JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 6

M1 - 064507

ER -

Fragile structural transition in Mo3Sb7

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