101 citations · 1.3k across the 68 of their papers we have counts for
69 papers
Magnon Orbital Angular Momentum of Ferromagnetic Honeycomb and Zig-Zag Lattices
R. S. Fishman, T. Berlijn, J. Villanova +1
By expanding the gauge for magnon band in harmonics of momentum , we demonstrate that the only observable component of the magnon orbital angular momen…
Gauge-Invariant Measure of the Magnon Orbital Angular Momentum
Randy S. Fishman
Unlike the Berry phase, the orbital angular momentum (OAM) of magnons with two-dimensional wavevector k in band n is not gauge invariant for arbitrary phase lambda_n(k). However, b…
Static and dynamical magnetic properties of the extended Kitaev-Heisenberg model with spin vacancies
Shaozhi Li, Randy S. Fishman, Tom Berlijn
Motivated by the potential to suppress the antiferromagnetic long-range order in favor of the long-sought-after Kitaev quantum spin liquid state, we study the effect of spin vacanc…
Field Tunable Magnetic Transitions of CsCo2(MoO4)2(OH): A Triangular Chain Structure with a Frustrated Geometry
Liurukara D Sanjeewa, V. Ovidiu Garlea, Randy S. Fishman +7
Identifying and characterizing new magnetic systems with Co2+ ions can enhance our understanding of quantum behavior since Co2+ can host a pseudospin-1/2 magnetic ground state. Und…
NaCo2(SeO3)2(OH): Competing Magnetic Ground States of a New Sawtooth Structure with 3d7 Co2+ Ions
Liurukara D. Sanjeewa, V. Ovidiu Garlea, Keith M. Taddei +5
While certain magnetic sublattices have long been known theoretically to give rise to emergent physics via competing magnetic interactions and quantum effects, finding such configu…
Exact Results for the Orbital Angular Momentum of Magnons on Honeycomb Lattices
Randy S. Fishman, Lucas Lindsay, Satoshi Okamoto
We obtain exact results for the orbital angular momentum (OAM) of magnons at the high symmetry points of ferromagnetic (FM) and antiferromagnetic (AF) honeycomb lattices in the pre…