Hole doping and antiferromagnetic correlations above the Néel temperature of the topological semimetal (Sr1-x Kx) MnSb2

Thumbnail Image
Date
2019-07-29
Authors
Liu, Yong
Islam, Farhan
Dennis, Kevin
Tian, Wei
Ueland, Benjamin
McQueeney, Robert
Vaknin, David
Major Professor
Advisor
Committee Member
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract

Neutron diffraction and magnetic susceptibility studies of orthorhombic single crystal (Sr0.97K0.03)MnSb2 confirm the three-dimensional (3D) C-type antiferromagnetic (AFM) ordering of the Mn2+ moments at TN=305±3 K, which is slightly higher than that of the parent SrMnSb2 with TN=297±3 K. Susceptibility measurements of the K-doped and parent crystals above TN are characteristic of 2D AFM systems. This is consistent with high-temperature neutron diffraction of the parent compound that displays persisting 2D AFM correlations well above TN to at least ∼560 K with no evidence of a ferromagnetic phase. Analysis of the de Haas–van Alphen magnetic oscillations of the K-doped crystal is consistent with hole doping.

Series Number
Journal Issue
Is Version Of
Versions
Series
IS-J 9994
Academic or Administrative Unit
Type
article
Comments
Rights Statement
Copyright
Funding
Subject Categories
DOI
Supplemental Resources
Collections