Element- and momentum-resolved electronic structure of the dilute magnetic semiconductor manganese doped gallium arsenide
- Univ. of California, Davis, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division; Forschungszentrum Julich (Germany). Peter Grünberg Inst. (PGI)
- Univ. of California, Davis, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
- Diamond Light Source, Didcot (United Kingdom)
- Forschungszentrum Julich (Germany). Peter Grünberg Inst. (PGI)
- Ludwig Maximilian Univ., Munich (Germany). Dept. of Chemistry
- Uppsala Univ. (Sweden). Dept. of Physics and Astronomy; Asia Pacific Center for Theoretical Physics, Pohang (Korea, Republic of)
- Univ. of West Bohemia, Plzeň (Czech Republic). New Technologies-Research Center
- Univ. of California, Davis, CA (United States). Dept. of Physics; Forschungszentrum Julich (Germany). Peter Grünberg Inst. (PGI)
The dilute magnetic semiconductors have promise in spin-based electronics applications due to their potential for ferromagnetic order at room temperature, and various unique switching and spin-dependent conductivity properties. However, the precise mechanism by which the transition-metal doping produces ferromagnetism has been controversial. Here we have studied a dilute magnetic semiconductor (5% manganese-doped gallium arsenide) with Bragg-reflection standing-wave hard X-ray angle-resolved photoemission spectroscopy, and resolved its electronic structure into element- and momentum- resolved components. The measured valence band intensities have been projected into element-resolved components using analogous energy scans of Ga 3d, Mn 2p, and As 3d core levels, with results in excellent agreement with element-projected Bloch spectral functions and clarification of the electronic structure of this prototypical material. This technique should be broadly applicable to other multi-element materials.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); LBNL Laboratory Directed Research and Development (LDRD) Program; National Agency for Research (ANR) (France); Ministry of Education, Youth and Sports (Czech Republic); German Research Foundation (DFG)
- Grant/Contract Number:
- AC02-05CH11231; SC0014697; CZ.02.1.01/0.0/0.0/15.003/0000358
- OSTI ID:
- 1477416
- Journal Information:
- Nature Communications, Vol. 9; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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