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Title: Orbital two-channel Kondo effect in epitaxial ferromagnetic L10-MnAl films

Abstract

The orbital two-channel Kondo effect displaying exotic non-Fermi liquid behaviour arises in the intricate scenario of two conduction electrons compensating a pseudo-spin-1/2 impurity of two-level system. Despite extensive efforts for several decades, no material system has been clearly identified to exhibit all three transport regimes characteristic of the two-channel Kondo effect in the same sample, leaving the interpretation of the experimental results a subject of debate. Here we present a transport study suggestive of a robust orbital two-channel Kondo effect in epitaxial ferromagnetic L10-MnAl films, as evidenced by a magnetic field-independent resistivity upturn with a clear transition from logarithmic- to square-root temperature dependence and deviation from it in three distinct temperature regimes. Lastly, our results also provide an experimental indication of the presence of two-channel Kondo physics in a ferromagnet, pointing to considerable robustness of the orbital two-channel Kondo effect even in the presence of spin polarization of the conduction electrons.

Authors:
 [1];  [2];  [3];  [3];  [2]
+ Show Author Affiliations
  1. Chinese Academy of Sciences, Beijing (China); Martin-Luther-Univ. Halle-Wittenberg, Halle (Germany)
  2. Chinese Academy of Sciences, Beijing (China)
  3. Florida State Univ., Tallahassee, FL (United States)
Publication Date:
Research Org.:
Florida State Univ., Tallahassee, FL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1253573
Grant/Contract Number:  
FG02-98ER45707
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 7; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; physical sciences; condensed matter

Citation Formats

Zhu, L. J., Nie, S. H., Xiong, P., Schlottmann, P., and Zhao, J. H. Orbital two-channel Kondo effect in epitaxial ferromagnetic L10-MnAl films. United States: N. p., 2016. Web. doi:10.1038/ncomms10817.
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Zhu, L. J., Nie, S. H., Xiong, P., Schlottmann, P., & Zhao, J. H. Orbital two-channel Kondo effect in epitaxial ferromagnetic L10-MnAl films. United States. https://doi.org/10.1038/ncomms10817
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Zhu, L. J., Nie, S. H., Xiong, P., Schlottmann, P., and Zhao, J. H. Wed . "Orbital two-channel Kondo effect in epitaxial ferromagnetic L10-MnAl films". United States. https://doi.org/10.1038/ncomms10817. https://www.osti.gov/servlets/purl/1253573.
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@article{osti_1253573,
title = {Orbital two-channel Kondo effect in epitaxial ferromagnetic L10-MnAl films},
author = {Zhu, L. J. and Nie, S. H. and Xiong, P. and Schlottmann, P. and Zhao, J. H.},
abstractNote = {The orbital two-channel Kondo effect displaying exotic non-Fermi liquid behaviour arises in the intricate scenario of two conduction electrons compensating a pseudo-spin-1/2 impurity of two-level system. Despite extensive efforts for several decades, no material system has been clearly identified to exhibit all three transport regimes characteristic of the two-channel Kondo effect in the same sample, leaving the interpretation of the experimental results a subject of debate. Here we present a transport study suggestive of a robust orbital two-channel Kondo effect in epitaxial ferromagnetic L10-MnAl films, as evidenced by a magnetic field-independent resistivity upturn with a clear transition from logarithmic- to square-root temperature dependence and deviation from it in three distinct temperature regimes. Lastly, our results also provide an experimental indication of the presence of two-channel Kondo physics in a ferromagnet, pointing to considerable robustness of the orbital two-channel Kondo effect even in the presence of spin polarization of the conduction electrons.},
doi = {10.1038/ncomms10817},
journal = {Nature Communications},
number = ,
volume = 7,
place = {United States},
year = {Wed Feb 24 00:00:00 EST 2016},
month = {Wed Feb 24 00:00:00 EST 2016}
}
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https://doi.org/10.1038/ncomms10817
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    Works referencing / citing this record:

    Anomalous resistivity upturn in epitaxial L21-Co2MnAl films
    journal, February 2017

    Observation of orbital two-channel Kondo effect in a ferromagnetic L10-MnGa film
    journal, September 2016

    • Zhu, Lijun; Woltersdorf, Georg; Zhao, Jianhua
    • Scientific Reports, Vol. 6, Issue 1
    • DOI: 10.1038/srep34549

    The low-temperature transport properties of Heusler alloy Mn 2 CoAl
    journal, September 2018

    • Chen, Peng; Gao, Cunxu; Chen, Guilin
    • Applied Physics Letters, Vol. 113, Issue 12
    • DOI: 10.1063/1.5046396

    Unusual interfacial magnetic interactions for τ-MnAl with Fe(Co) atomic layers
    journal, January 2019

    • Tong, Junwei; Feng, Yuxuan; Tian, Fubo
    • Physical Chemistry Chemical Physics, Vol. 21, Issue 5
    • DOI: 10.1039/c8cp06599c

    Inducing ferromagnetism and Kondo effect in platinum by paramagnetic ionic gating
    journal, April 2018

    Two-Channel Kondo Physics due to As Vacancies in the Layered Compound ZrAs 1.58 Se 0.39
    journal, September 2016

    Topological Majorana Two-Channel Kondo Effect
    journal, October 2017

    Topological Majorana Two-Channel Kondo Effect
    text, January 2016

    Tuning spin one channel to exotic orbital two-channel Kondo effect in ferrimagnetic composites of LaNiO 3 and CoFe 2 O 4
    journal, August 2018

    • Patra, Ananya; Maity, Krishna Prasad; Kamble, Ramesh B.
    • Journal of Physics: Condensed Matter, Vol. 30, Issue 37
    • DOI: 10.1088/1361-648x/aad836

    Inducing ferromagnetism and Kondo effect in platinum by paramagnetic ionic gating
    text, January 2018

    • Liang, Lei; Chen, Qihong; Lu, Jianming
    • American Association for the Advancement of Science
    • DOI: 10.5167/uzh-157209

    Observation of orbital two-channel Kondo effect in a ferromagnetic L10-MnGa film
    text, January 2016

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