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Disorder-induced critical exponents near a ferromagnetic quantum critical point in Mn1−xCrxSi
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Mishra, Ashish Kumar, Shanmukharao Samatham, S., Lees, Martin R. and Ganesan, V. (2020) Disorder-induced critical exponents near a ferromagnetic quantum critical point in Mn1−xCrxSi. Physical Review B, 101 (14). 144436. doi:10.1103/PhysRevB.101.144436 ISSN 2469-9950.
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Official URL: http://dx.doi.org/10.1103/PhysRevB.101.144436
Abstract
We report the observation of critical behavior in Mn1−xCrxSi (0≤x≤1) close to a T = 0 K quantum critical point, consistent with the Belitz-Kirkpatrick-Vojta (BKV) theory of disordered metallic ferromagnets. The critical exponents are in good agreement with the theoretical predictions of the BKV theory in the preasymptotic limit. A non-Fermi liquid-like behavior is seen down to 200 mK in the transport and thermodynamic properties around the critical concentration xC = 0.2. Quantum criticality and self-consistency of the exponents is further confirmed using a scaling analysis of the magnetization and heat capacity data. A recovery to Fermi liquid-like behavior is displayed on moving away from the critical composition, as well as with the application of a magnetic field.
Item Type: | Journal Article | ||||||||||||
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Subjects: | Q Science > QC Physics | ||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||
Library of Congress Subject Headings (LCSH): | Quantum theory, Ferromagnetism, Fermi liquids | ||||||||||||
Journal or Publication Title: | Physical Review B | ||||||||||||
Publisher: | American Physical Society | ||||||||||||
ISSN: | 2469-9950 | ||||||||||||
Official Date: | 27 April 2020 | ||||||||||||
Dates: |
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Volume: | 101 | ||||||||||||
Number: | 14 | ||||||||||||
Article Number: | 144436 | ||||||||||||
DOI: | 10.1103/PhysRevB.101.144436 | ||||||||||||
Status: | Peer Reviewed | ||||||||||||
Publication Status: | Published | ||||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||||
Copyright Holders: | ©2020 American Physical Society | ||||||||||||
Date of first compliant deposit: | 28 April 2020 | ||||||||||||
Date of first compliant Open Access: | 28 April 2020 | ||||||||||||
RIOXX Funder/Project Grant: |
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