67 citations · 164 across the 11 of their papers we have counts for
7 papers · 1 filter
Tellurium-bridged two-leg spin ladder in BaCuTeO
G. Narsinga Rao, R. Sankar, Akansha Singh +5
We present single-crystal growth and magnetic property studies of tellurium-bridged copper spin-1/2 system BaCuTeO. The spin-exchange interaction among copper spins via Cu-…
Antiferromagnetism of Ni2NbBO6 with S = 1 dimer quasi-one-dimensional armchair chains
G. Narsinga Rao, Viveka Nand Singh, R. Sankar +3
Long range antiferromagnetic (AFM) ordering of Ni spins in Ni2NbBO6 has been studied with single crystal from spin susceptibility measurement and comparedwith the ab initio calcula…
Radio frequency spectroscopy of the attractive Hubbard model in a trap
Sanjoy Datta, Viveka Nand Singh, Pinaki Majumdar
Attractive interaction between fermions can lead to pairing and superfluidity in an optical lattice. In contrast to the `continuum', on a lattice the trap induced density variation…
The Magnon Spectrum in the Domain Ferromagnetic State of Antisite Disordered Double Perovskites
Subrat Kumar Das, Viveka Nand Singh, Pinaki Majumdar
In their ideal structure, double perovskites like Sr_2FeMoO_6 have alternating Fe and Mo along each cubic axes, and a homogeneous ferromagnetic metallic ground state. Imperfect ann…
Huge Positive Magnetoresistance in Antiferromagnetic Double Perovskite Metals
Viveka Nand Singh, Pinaki Majumdar
Metals with large positive magnetoresistance are rare. We demonstrate that antiferromagnetic metallic states, as have been predicted for the double perovskites, are excellent candi…
Antiferromagnetic Order and Phase Coexistence in Antisite Disordered Double Perovskites
Viveka Nand Singh, Pinaki Majumdar
In addition to the well known ferromagnetism, double perovskites are also expected to exhibit antiferromagnetic (AF) order driven by electron delocalisation. This has been seen in…