Investigation of spin-gapless semiconductivity and half-metallicity in Ti2MnAl-based compounds
- Univ. of Northern Iowa, Cedar Falls, IA (United States). Dept. of Physics
- Univ. of Nebraska, Lincoln, NE (United States). Nebraska Center for Materials and Nanoscience; South Dakota State Univ., Brookings, SD (United States). Dept. of Physics
- South Dakota State Univ., Brookings, SD (United States). Dept. of Physics
- Univ. of Nebraska, Lincoln, NE (United States). Nebraska Center for Materials and Nanoscience
- Univ. of Nebraska, Lincoln, NE (United States). Nebraska Center for Materials and Nanoscience and Dept. of Physics and Astronomy
- South Dakota State Univ., Brookings, SD (United States). Dept. of Physics; Hohai Univ., Jiangsu (China). College of Mechanical and Electrical Engineering
The increasing interest in spin-based electronics has led to a vigorous search for new materials that can provide a high degree of spin polarization in electron transport. An ideal candidate would act as an insulator for one spin channel and a conductor or semiconductor for the opposite spin channel, corresponding to the respective cases of half-metallicity and spin-gapless semiconductivity. Our first-principle electronic-structure calculations indicate that the metallic Heusler compound Ti2MnAl becomes half-metallic and spin-gapless semiconducting if half of the Al atoms are replaced by Sn and In, respectively. These electronic structures are associated with structural transitions from the regular cubic Heusler structure to the inverted cubic Heusler structure.
- Research Organization:
- Univ. of Nebraska, Lincoln, NE (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
- Grant/Contract Number:
- FG02-04ER46152; NNCI: 1542182
- OSTI ID:
- 1469706
- Alternate ID(s):
- OSTI ID: 1245497; OSTI ID: 1469703
- Journal Information:
- Applied Physics Letters, Vol. 108, Issue 14; ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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