145 citations · 1.1k across the 38 of their papers we have counts for
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Quantum spin Hall effect in two-dimensional metals without spin-orbit coupling
Aiying Zhao, Qiang Gu, Timothy J. Haugan +2
The quantum spin Hall effect has been observed in topological insulators using spin-orbit coupling as the probe, but it has not yet been observed in a metal. An experiment is propo…
The Zeeman, Spin-Orbit, and Quantum Spin-Hall Interactions in Anisotropic and Low-Dimensional Conductors
Aiying Zhao, Qiang Gu, Timothy J. Haugan +1
When an electron or hole is in a conduction band of a crystal, it can be very different from 2, depending upon the crystalline anisotropy and the direction of the applied magnetic…
Single-ion and exchange anisotropy in high-symmetry tetramer single molecule magnets
Richard A. Klemm, Dmitri V. Efremov
For equal-spin tetramer single molecule magnets with ionic point groups , and , we write the group-invariant single-ion, Dzaloshin…
Theory of high-symmetry tetramer single molecule magnets
Richard A. Klemm, Dmitri V. Efremov
We present a microscopic theory of single molecule magnets. From our exact single-ion spin matrix elements for four arbitrary spins, we study the single-ion anisotropy of equal spi…
Spin anisotropy effects in dimer single molecule magnets
Dmitri V. Efremov, Richard A. Klemm
We present a model of equal spin dimer single molecule magnets. The spins within each dimer interact via the Heisenberg and the most general set of four quadratic anisotropic…
First-principles calculations of the magnetism of FeOH
Sergey Stolbov, Richard A. Klemm, Talat S. Rahman
By expanding the wave function in plane waves, we use the pseudopotential method of density functional theory within the generalized gradient approximation to calculate the effecti…
Effect of dipolar interactions on the magnetization of a cubic array of nanomagnets
Marisol Alcantara Ortigoza, Richard A. Klemm, Talat S. Rahman
We investigated the effect of intermolecular dipolar interactions on a cubic 3D ensemble of 5X5X4=100 nanomagnets, each with spin . We employed the Landau-Lifshitz-Gilbert e…
Local spin anisotropy effects upon the magnetization and specific heat of dimer single molecule magnets
Dmitri V. Efremov, Richard A. Klemm
We present an exactly solvable model of equal spin dimer single molecule magnets. The spins within each dimer interact via the Heisenberg and the most general quadratic globa…
Exact time correlation functions for N classical Heisenberg spins in the `squashed' equivalent neighbor model
Marco Ameduri, Richard A. Klemm
We present exact integral representations of the time-dependent spin-spin correlation functions for the classical Heisenberg N-spin `squashed' equivalent neighbor model, in which o…
Zero-field Time Correlation Functions of Four Classical Heisenberg Spins on a Ring
Richard A. Klemm, Marshall Luban
A model relevant for the study of certain molecular magnets is the ring of N=4 classical spins with equal near-neighbor isotropic Heisenberg exchange interactions. Assuming classic…