Projects per year
Abstract
Half-metallic ferromagnets show 100% spin-polarization at the Fermi level and are ideal candidates for spintronic applications. Despite the extensive research in the field, very few materials have been discovered so far. Here, we present results of electronic band structure calculations based on density functional theory and extensive physical-property measurements for Fe3Se4 revealing signatures of half-metallicity. The spin-polarized electronic band structure calculations predict half-metallic ferrimagnetism for Fe3Se4. The electrical resistivity follows exponentially suppressed electron-magnon scattering mechanism in the low-temperature regime and show a magnetoresistance effect that changes the sign from negative to positive with decreasing temperature around 100 K. Other intriguing observations include the anomalous behavior of Hall resistance below 100 K and an anomalous Hall coefficient that roughly follows the ρ 2 behavior.
Original language | English |
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Article number | 455801 |
Number of pages | 6 |
Journal | Journal of physics: Condensed matter |
Volume | 32 |
Issue number | 45 |
DOIs | |
Publication status | Published - 28 Oct 2020 |
MoE publication type | A1 Journal article-refereed |
Keywords
- half-metal
- ferrimagnetism
- magnetotransport
- anomalous Hall effect
- NEUTRON-DIFFRACTION
- FERROMAGNETS
- SPINTRONICS
- GAP
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Dive into the research topics of 'Fe3Se4 : a possible ferrimagnetic half-metal?'. Together they form a unique fingerprint.Projects
- 1 Finished
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TEOX: Thermoelectric Materials based on Earth-Abundant Oxides (TEOX)
Karppinen, M. (Principal investigator)
01/09/2015 → 31/08/2019
Project: Academy of Finland: Other research funding
Equipment
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Raw Materials Research Infrastructure
Karppinen, M. (Manager)
School of Chemical EngineeringFacility/equipment: Facility