Avinash
Singh
Professor
Office: 376, Faculty Building
Phone: +91-512-259-7047 (O), 259-8476 (H)
Fax: +91-512-259-0914,
259-0007
Email: avinas@iitk.ac.in
1. Unified Description of Magnetic and Electronic Excitations
in Cuprate Antiferromagnets
Spin-wave spectrum fit with
high-resolution neutron scattering
data for La2CuO4
Phys. Rev. B 66, 092402 (2002)
Quasiparticle dispersion fit with
ARPES data for Sr2CuO2Cl2
Phys. Rev. B 70, 115103 (2004)
2. Spin Fluctuations in Triangular-Lattice
Systems ---
Interplay of Electronic Correlation and Magnetic Frustration Effects
U-controlled Frustration,
Vanishing Spin Stiffness,
and Quantum Phase Transition
Phys. Rev. B 71, 214406
(2005)
Electron and Hole pockets
in a doped triangular-lattice
antiferromagnet
Electron and Hole Dynamics in
the
Triangular-Lattice Antiferromagnet
Phys. Rev. B 72, 224409 (2005)
3. Goldstone-mode Preserving Investigation of
Correlation Effects in a
Band Ferromagnet
Order 1/N Quantum Corrections to the
Irreducible Particle-Hole Propagator
Spin-Rotationally-Symmetric
Study with
Self-energy and Vertex
Corrections
Phys. Rev. B 74, 224437 (2006)
Band Ferromagnetism in the t-t' Hubbard Model
Phys. Rev. B 75, 064412 (2007)
4. Spin Dynamics in Diluted Magnetic Semiconductors
Dilution-induced
magnon softening
Spin Clustering Induced
Weakening of Ferromagnetism in
Diluted Magnetic Semiconductors
Phys. Rev. B 75, 035206 (2007)
Finite-Temperature Spin Dynamics
studied using
Locally Self-Consistent
Magnon Renormalization Scheme
Phys. Rev. B 75, 035206 (2007)
J. Phys.: Condens. Matter
19, 236213 (2007)