TY - JOUR
T1 - Possible structural transformation and enhanced magnetic fluctuations in exfoliated α-RuCl3
AU - Zhou, Boyi
AU - Wang, Yiping
AU - Osterhoudt, Gavin B.
AU - Lampen-Kelley, Paula
AU - Mandrus, David
AU - He, Rui
AU - Burch, Kenneth S.
AU - Henriksen, Erik A.
N1 - Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2019/5
Y1 - 2019/5
N2 - We present Raman spectroscopy experiments on exfoliated α-RuCl3, from tens of nm thick down to single layers. Besides unexpectedly finding this material to be air stable, in the thinnest layers we observe the appearance with decreasing temperature of a symmetry-forbidden mode in crossed polarization, along with an anomalous broadening of a mode at 164 cm−1 that is known to couple to a continuum of magnetic excitations. This may be due to an enhancement of magnetic fluctuations and evidence for a distorted honeycomb lattice in single- and bilayer samples.
AB - We present Raman spectroscopy experiments on exfoliated α-RuCl3, from tens of nm thick down to single layers. Besides unexpectedly finding this material to be air stable, in the thinnest layers we observe the appearance with decreasing temperature of a symmetry-forbidden mode in crossed polarization, along with an anomalous broadening of a mode at 164 cm−1 that is known to couple to a continuum of magnetic excitations. This may be due to an enhancement of magnetic fluctuations and evidence for a distorted honeycomb lattice in single- and bilayer samples.
KW - A. Magnetic materials
KW - C. Raman spectroscopy
KW - D. Phonons
UR - https://www.scopus.com/pages/publications/85040643294
U2 - 10.1016/j.jpcs.2018.01.026
DO - 10.1016/j.jpcs.2018.01.026
M3 - Article
AN - SCOPUS:85040643294
SN - 0022-3697
VL - 128
SP - 291
EP - 295
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
ER -