@article{483ebb0002aa42d09ff69f73ae689776,
title = "Ultrafast demagnetization mechanism in half-metallic Heusler alloy thin films controlled by the Fermi level",
abstract = "The electronic band-structure controlled ultrafast demagnetization mechanism in Co2FexMn1-xSi Heusler alloy is underpinned by systematic variation of composition. We find the spin-flip scattering rate controlled by spin density of states at the Fermi level is responsible for nonmonotonic variation of ultrafast demagnetization time (τM) with x with a maximum at x=0.4. Furthermore, Gilbert damping constant exhibits an inverse relationship with τM due to the dominance of interband scattering mechanism. This demonstrates a connection between ultrafast demagnetization and magnetic damping based on Fermi-level position in this Heusler alloy system.",
author = "Santanu Pan and Takeshi Seki and Koki Takanashi and Anjan Barman",
note = "Funding Information: This work was funded by S. N. Bose National Centre for Basic Sciences under Projects No. SNB/AB/12-13/96, No. SNB/AB/18-19/211 and Grant-in-Aid for Scientific Research (A) (Grant No. JP20H00299) from JSPS KAKENHI, Japan. The structural characterization was partly carried out at the Cooperative Research and Development Center for Advanced Materials, IMR, Tohoku University. Publisher Copyright: {\textcopyright} 2020 American Physical Society.",
year = "2020",
month = jun,
day = "1",
doi = "10.1103/PhysRevB.101.224412",
language = "English",
volume = "101",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "22",
}