21 citations · 28 across the 10 of their papers we have counts for
10 papers
Fermionic Approach to Elementary Excitations and Magnetization Plateaus in an S=1/2 XX Hybrid Trimer-Dimer Chain
K. S. Chikara, A. K. Bera, A. Kumar +1
We study the elementary excitations and magnetization of a one-dimensional spin-1/2 XX chain comprising trimer-dimer units (the J1-J1-J2-J3-J2 topology) under a transverse magnetic…
Multiscale Magnetic Correlations in La2Mn2-xNixO6: Role of Crystal Structure in Double Perovskites
A. K. Bera, K. S. Chikara, B. Saha +3
The magnetic correlations in double perovskites La2Mn2-xNixO6 (x = 0.5, 0.75, 1.0, 1.25 and 1.5) have been systematically investigated across macroscopic, mesoscopic, and microscop…
Magnetic Ground State and Spin Excitations in the 2D Trimerized Collinear-II Lattice Antiferromagnet Li2Ni3P4O14
K. S. Chikara, A. K. Bera, A. Kumar +3
We report the magnetic ground state, spin excitations, and spin Hamiltonian of the 2D spin-1 trimerized Heisenberg antiferromagnet Li2Ni3P4O14. Below the magnetic ordering temperat…
Fermionic Band Dispersions and an Evidence of Cooperon Excitations in a Spin- Trimer Chain
P. Srikanth Patnaik, Snehasish Sen, A. K. Bera +3
We obtain the solution of the Hamiltonian of an antiferromagnetically coupled spin- trimer chain in terms of three bands that host three different species of fermions. While t…
Effect of antisite disorder on the magnetic and transport properties of a quaternary Heusler alloy
Srishti Dixit, Swayangsiddha Ghosh, Sanskar Mishra +8
Spin gapless semiconductors based Heusler alloys are the special class of materials due to their unique band structure, high spin polarization and high Curie temperature. These mat…
Structural modulation driven Curie temperature enhancement in Cr-doped SrRuO3
Pooja, Bikash Saha, Nitesh Choudhary +4
Strongly correlated system with competing ground states are often poised close to the quantum critical point. External perturbations such as pressure, strain, electric field, and c…
Antiferromagnetic ordering and glassy nature in NASICON type NaFePO(SO)
Manish Kr. Singh, A. K. Bera, Ajay Kumar +2
We investigate crystal structure and magnetic properties including spin relaxation and magnetocaloric effect in NASICON type NaFePO(SO) sample. The Rietveld refinem…
Field-induced phase transitions and anisotropic magnetic properties of the Kiteav-Heisenberg compound NaCoTeO
A. K. Bera, S. M. Yusuf, F. Orlandi +3
Spin systems with honeycomb structures have recently attracted a great deal of attention in connection with the Kitaev quantum spin liquid state (QSL) predicted theoretically. One…
Controlling structural distortion in the geometrically frustrated layered cobaltate YBaCo4O7+δ by Fe substitution and its role on magnetic correlations
A. K. Bera, S. M. Yusuf, S. S. Meena +3
Effects of Fe-substitution on the crystal structure and magnetic correlations of the geometrically frustrated antiferromagnets YBaCo4-xFexO7+δ (x = 0, 0.2, 0.4, 0.5, 0.6, and 0.8)…
Short-range Magnetic Ordering in the Geometrically Frustrated Layered Compound YBaCo4O7 with an Extended Kagomé Structure
A. K. Bera, S. M. Yusuf, S. Banerjee
Structural and magnetic properties of the geometrically frustrated layered compound YBaCo4O7 have been studied by magnetization and neutron diffraction. A layered type crystal stru…