375 citations · 1.3k across the 15 of their papers we have counts for
15 papers
Structure and magnetism of MnGe thin films grown with a nonmagnetic CrSi template
B. D. MacNeil, J. S. R. McCoombs, D. Kalliecharan +7
We report a method to grow B20 MnGe thin films using molecular-beam epitaxy, which employs an ultrathin CrSi template layer on Si(111). This layer is expected to be nonmagnetic, in…
Giant anomalous Hall effect in epitaxial MnGe films with a cubic kagome structure
J. S. R. McCoombs, B. D. MacNeil, V. Askarpour +8
We report on the first example of epitaxial MnGe thin films with a cubic structure. The films are found to exhibit frustrated ferromagnetism with an average magnet…
The influence of film thickness and uniaxial anisotropy on in-plane skyrmions: Numerical investigations of the phase space of chiral magnets
Cameron Rudderham, Martin Plumer, Theodore Monchesky
The equilibrium phase space of magnetic textures in thin-films of cubic chiral ferromagnets, including skyrmions, is explored as a function of in-plane magnetic field strength, fil…
Chiral nematic and fluctuation-induced first-order phase transitions in AB-stacked kagome bilayers
A. Zelenskiy, M. L. Plumer, B. W. Southern +2
We study a Heisenberg-Dzyaloshinskii-Moriya Hamiltonian on AB-stacked kagome bilayers at finite temperature. In a large portion of the parameter space, we observe three transitions…
Impact of Dzyaloshinskii-Moriya and anisotropic exchange interactions on the cubic kagome antiferromagnets MnX and MnAB
J. S. R. McCoombs, A. Zelenskiy, M. L. Plumer +2
We perform a symmetry analysis of the ABC-stacked kagome planes of Mn atoms common to the MnX and antiperovskite MnAB alloys. In addition to the single-ion-anisotrop…
Magnetic interactions in AB-stacked kagome lattices: magnetic structure, symmetry, and duality
Andrey Zelenskiy, Theodore L. Monchesky, Martin L. Plumer +1
We present the results of an extensive study of the phase diagram and spin wave excitations for a general spin model on a hexagonal AB-stacked kagome system. The boundaries of the…
Anisotropic magnetic interactions in hexagonal AB-stacked kagome lattice structures: Applications to ( = , , ) compounds
A. Zelenskiy, T. L. Monchesky, M. L. Plumer +1
compounds in which the magnetic atoms form AB-stacked kagome lattices have received a tremendous amount of attention since the observation o…
Asymmetric spin wave dispersion due to a saturation magnetization gradient
Pablo Borys, Oleg Kolokoltsev, Naser Qureshi +2
We demonstrate using micromagnetic simulations and a theoretical model that a gradient in the saturation magnetization () of a perpendicularly magnetized ferromagnetic film in…
The 2020 Skyrmionics Roadmap
C. Back, V. Cros, H. Ebert +16
The notion of non-trivial topological winding in condensed matter systems represents a major area of present-day theoretical and experimental research. Magnetic materials offer a v…
Disorder-induced ferrimagnetism in sputtered MnCoGe thin films
D. Kalliecharan, J. S. R. McCoombs, M. M. E. Cormier +3
Investigations into the magnetic properties of sputtered MnCoGe films in the range uncovered ferrimagnetic order, unlike the ferromagnetic order reporte…
Neutron study of in-plane skyrmions in MnSi thin films
S. A. Meynell, M. N. Wilson, K. L. Krycka +3
The magnetic structure of the in-plane skyrmions in epitaxial MnSi/Si(111) thin films is probed in three dimensions by the combination of polarized neutron reflectometry (PNR) and…
The properties of isolated chiral skyrmions in thin magnetic films
A. O. Leonov, T. L. Monchesky, N. Romming +3
Axisymmetric solitonic states (chiral skyrmions) have been predicted theoretically more than two decades ago. However, until recently they have been observed in a form of skyrmioni…
Chiral skyrmions in cubic helimagnet films: the role of uniaxial anisotropy
M. N. Wilson, A. B. Butenko, A. N. Bogdanov +1
This paper reports on magnetometry and magnetoresistance measurements of MnSi epilayers performed in out-of-plane magnetic fields. We present a theoretical analysis of the chiral m…
Discrete helicoidal states in chiral magnetic thin films
M. N. Wilson, E. A. Karhu, D. P. Lake +4
Magnetometry and magnetoresistance measurements in MnSi thin films and rigorous analytical solutions of the micromagnetic equations show that the field-induced unwinding of confine…
Extended elliptic skyrmion gratings in epitaxial MnSi thin films
M. N. Wilson, E. A. Karhu, A. S. Quigley +5
A detailed investigation of the magnetization processes in epitaxial MnSi thin film reveals the existence of elliptically distorted skyrmion strings that lie in the plane of the fi…