12 citations · 40 across the 5 of their papers we have counts for
5 papers
Spin-charge coupling in a band ferromagnet: magnon-energy reduction, anomalous softening, and damping
Sudhakar Pandey, Avinash Singh
The effects of correlation-induced coupling between spin and charge fluctuations on spin-wave excitations in a band ferromagnet are investigated by including self-energy and vertex…
Fermionic representation for the ferromagnetic Kondo lattice model -- diagrammatic study of spin-charge coupling effects on magnon excitations
Sudhakar Pandey, Subrat Das, Bhaskar Kamble +4
A purely fermionic representation is introduced for the ferromagnetic Kondo lattice model which allows conventional diagrammatic tools to be employed to study correlation effects.…
Correlation effects on magnetic frustration in the triangular-lattice Hubbard model
Saptarshi Ghosh, Avinash Singh
Evolution of the magnetic response function in the triangular-lattice Hubbard model is studied with interaction strength within a systematic inverse-degeneracy expansion scheme whi…
High energy kink in the dispersion of a hole in an antiferromagnet -- double-occupancy effects on electronic excitations
Pooja Srivastava, Saptarshi Ghosh, Avinash Singh
Evolution of the hole spectral function along the Gamma-(pi,pi) cut is studied in the antiferromagnetic state of the Hubbard model. The kink in the calculated hole dispersion, the…
Quantum and thermal fluctuations in a two-dimensional correlated band ferromagnet -- Goldstone-mode preserving investigation with self-energy and vertex corrections
Sudhakar Pandey, Avinash Singh
Ferromagnetism in the t-t' Hubbard model is investigated on a square lattice. Correlation effects in the form of self-energy and vertex corrections are systematically incorporated…