Journal
PHYSICAL REVIEW B
Volume 89, Issue 8, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.89.081106
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Funding
- National Science Foundation [DGE-114747]
- Defense Advanced Research Projects Agency Microsystems Technology Office [N66001-11-1-4105]
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We study strained Hg1-x-yCdxMny Te in a magnetic field using a k.p model and predict that the system is a Weyl semimetal with two nodes in an experimentally reasonable region of the phase diagram. We also predict two signatures of the Weyl semimetal phase which arise from tunability of the Weyl node splitting. First, we find that the Hall conductivity is proportional to the average Mn ion spin and thus is strongly temperature dependent. Second, we find an unusual magnetic field angle dependence of the Hall conductivity; in particular, we predict a peak in sigma(xy) as a function of field angle in the xz plane and a finite sigma(yz) as the x component of the field goes to zero.
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