{ScnGdn} Heterometallic Rings: Tunable Ring Topology for Spin-Wave Excitations
Journal
Journal of the American Chemical Society
Journal Volume
144
Journal Issue
33
Pages
15193
Date Issued
2022-08-24
Author(s)
Zhang, Hao-Lan
Zhai, Yuan-Qi
Nojiri, Hiroyuki
Schröder, Christian
Hsu, Hung-Kai
Fu, Zhendong
Zheng, Yan-Zhen
Abstract
Data carriers using spin waves in spintronic and magnonic logic devices offer operation at low power consumption and free of Joule heating yet requiring noncollinear spin structures of small sizes. Heterometallic rings can provide such an opportunity due to the controlled spin-wave transmission within such a confined space. Here, we present a series of {ScnGdn} (n = 4, 6, 8) heterometallic rings, which are the first Sc-Ln clusters to date, with tunable magnetic interactions for spin-wave excitations. By means of time- and temperature-dependent spin dynamics simulations, we are able to predict distinct spin-wave excitations at finite temperatures for Sc4Gd4, Sc6Gd6, and Sc8Gd8. Such a new model is previously unexploited, especially due to the interplay of antiferromagnetic exchange, dipole-dipole interaction, and ring topology at low temperatures, rendering the importance of the latter to spin-wave excitations.
Subjects
INELASTIC NEUTRON-SCATTERING; WHEELS; MAGNETIZATION; TB; GD; HO; DY; LN
SDGs
Publisher
AMER CHEMICAL SOC
Type
journal article