Influence of the magnetovolume effect on the transient reflectivity of MnSi

verfasst von: J. Kalin, S. Sievers, H. w. Schumacher, H. Füser, M. Bieler, A. Bauer, C. Pfleiderer
Abstract: The magnetovolume effect is a well established yet frequently overlooked phenomenon in magnetic materials that may affect a wide range of physical properties. Our study explores the influence of the magnetovolume effect on the transient reflectivity of MnSi, a well-known chiral magnet with strong magnetoelastic coupling. We observe a unipolar reflectivity transient in the paramagnetic phase, contrasting with a bipolar response in phases with magnetic long-range order. Comparing our findings with thermal expansion from literature, we establish that the bipolar response originates in the magnetovolume effect which dominates the thermal expansion and influences the optical reflectivity. Our results highlight not only that the magnetovolume effect must be considered when discussing transient reflectivity measurements of magnetic materials but also that such measurements permit to study the characteristic time scales of the magnetovolume effect itself, contributing to a deeper understanding of this often-neglected phenomenon.
Externe Organisation(en): Physikalisch-Technische Bundesanstalt (PTB)
Typ: Artikel
Journal: Physical Review B
Band: 110
ISSN: 2469-9950
Publikationsdatum: 11.07.2024
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Elektronische, optische und magnetische Materialien, Physik der kondensierten Materie
Elektronische Version(en): https://link.aps.org/doi/10.1103/PhysRevB.110.014415 (Zugang: Unbekannt)
https://doi.org/10.1103/PhysRevB.110.014415 (Zugang: Offen)

BibTeX

@article{b5dad81e4fa24126bce7ac3074d973e7,
title = "Influence of the magnetovolume effect on the transient reflectivity of MnSi",
abstract = "The magnetovolume effect is a well established yet frequently overlooked phenomenon in magnetic materials that may affect a wide range of physical properties. Our study explores the influence of the magnetovolume effect on the transient reflectivity of MnSi, a well-known chiral magnet with strong magnetoelastic coupling. We observe a unipolar reflectivity transient in the paramagnetic phase, contrasting with a bipolar response in phases with magnetic long-range order. Comparing our findings with thermal expansion from literature, we establish that the bipolar response originates in the magnetovolume effect which dominates the thermal expansion and influences the optical reflectivity. Our results highlight not only that the magnetovolume effect must be considered when discussing transient reflectivity measurements of magnetic materials but also that such measurements permit to study the characteristic time scales of the magnetovolume effect itself, contributing to a deeper understanding of this often-neglected phenomenon.",
author = "J. Kalin and S. Sievers and Schumacher, {H. w.} and H. F{\"u}ser and M. Bieler and A. Bauer and C. Pfleiderer",
note = "Publisher Copyright: {\textcopyright} 2024 American Physical Society.",
year = "2024",
month = jul,
day = "11",
doi = "10.1103/PhysRevB.110.014415",
language = "English",
volume = "110",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Institute of Physics",
number = "1",
}