Ferromagnetism in Ga1-xMnxP: evidence for inter-Mn exchange mediated by localized holes within a detached impurity band
M. A. Scarpulla, B. L. Cardozo, W. M. Hlaing Oo, M. D. McCluskey, O. D. Dubon
Abstract
We demonstrate that in ferromagnetic Ga1-xMnxP exchange is mediated by holes localized in a Mn-derived band. For x<0.06, infrared absorption and photoconductivity spectra indicate the presence of a Mn impurity band which is not merged with the valence band. At temperatures above TC (<65 K) electrical transport is dominated by excitation across this energy gap while nearest neighbor hopping dominates below TC. Magnetization measurements reveal a moment of 3.5 Bohr magnetons per substitutional Mn, while the large anomalous Hall signal unambiguously demonstrates that the ferromagnetism is carrier-mediated.
Create a lesson
Related papers
Ferron polariton Hall effect: Deflecting optically rectified polarization with magnetic fields
Omer Yaniv, Dominik M. Juraschek
Band structure of two-dimensional graphene and of one-dimensional nanoribbons via variational quantum algorithms: from energies to wavefunction quality
Raúl Medrano Millán, Rodrigo Gil-Merino y Rubio, Juan Borge et al.
Aging-Improved NH3 Sensing in Polypyrrole Nanotube Chemiresistors
Arya Mohan, Olivia Kamdom, Antoine Enel et al.
Effect of molybdenum content on phase transformations during continuous heating of metastable β Ti-Mo alloys
Veronika Kočiščáková, Anna Veverková, Josef Stráský et al.
Controlling nitrogen incorporation in (Eu,Ba,Ca)TiO3-derived perovskite-type oxynitrides through Fermi Level Engineering
Margarida Barroso, Marie Neumann, Rachele Sciotto et al.
Effect of compensation on magnetic ordering in (Ga,Mn)As
I. A. Kokurin, N. S. Averkiev