Possible quantum phase transition in partially Cu-doped ZrNi2-xCuxGa Heusler alloys

Mahmud Khan; Kyra Stillwell; Brandon Reese; Subhash Bhatt; Arjun K. Pathak

doi:10.1063/9.0000263

AIP Advances (Mar 2022)

Possible quantum phase transition in partially Cu-doped ZrNi2-xCuxGa Heusler alloys

Mahmud Khan,
Kyra Stillwell,
Brandon Reese,
Subhash Bhatt,
Arjun K. Pathak

Affiliations

Mahmud Khan: Department of Physics, Miami University, Oxford, Ohio 45056, USA
Kyra Stillwell: Department of Physics, Miami University, Oxford, Ohio 45056, USA
Brandon Reese: Department of Physics, Miami University, Oxford, Ohio 45056, USA
Subhash Bhatt: Department of Physics, Miami University, Oxford, Ohio 45056, USA
Arjun K. Pathak: Department of Physics, SUNY Buffalo State, Buffalo, New York 14222, USA

DOI: https://doi.org/10.1063/9.0000263
Journal volume & issue: Vol. 12, no. 3
pp. 035237 – 035237-4

Abstract

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We have studied the magneto-transport properties of a series of ZrNi2-xCuxGa compounds. For all Cu concentration (x ≤ 0.5) the samples exhibited the L21 cubic structure at room temperature and demonstrated superconductivity below 2 K. A superconducting phase transition temperature of as low as ∼1 K and a critical magnetic field of 1.78 T was observed in the system. A linear extrapolation of TC to T = 0 highly indicated that a stoichiometry-dependent superconducting quantum phase transition may occur in ZrNi2-xCuxGa at xc = 0.90.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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