Fe3Se4 : a possible ferrimagnetic half-metal?

Girish C. Tewari*, Divya Srivastava, Reijo Pohjonen, Otto Mustonen, Antti J. Karttunen, Johan Linden, Maarit Karppinen

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

Abstrakti

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 Fe(3)Se(4)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 rho(2)behavior.

AlkuperäiskieliEnglanti
Artikkeli455801
Sivumäärä6
JulkaisuJournal of physics: Condensed matter
Vuosikerta32
Numero45
DOI - pysyväislinkit
TilaJulkaistu - 28 lokakuuta 2020
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

Siteeraa tätä