Zobrazeno 1 - 10
of 379
pro vyhledávání: '"Kumar, Manoranjan"'
We theoretically investigate the resonant inelastic X-ray scattering (RIXS) spectra in a quasi-1D chain of weakly coupled frustrated spin-1/2 trimers, as realized in Na$_{2}$Cu$_{3}$Ge$_{4}$O$_{12}$, with Cu $d^{9}$ 1/2 spins. We compute multi-spin c
Externí odkaz:
http://arxiv.org/abs/2410.15082
We investigate the quantum phases of a frustrated antiferromagnetic Heisenberg spin-1/2 model Hamiltonian on a Kagome-strip chain (KSC), a one-dimensional analogue of the Kagome lattice, and construct its phase diagram in an extended exchange paramet
Externí odkaz:
http://arxiv.org/abs/2409.12530
Autor:
Sau, Jyotirmoy, Chakraborty, Sourav, Saha, Sourabh, Pradhan, Kalpataru, Mukherjee, Anamitra, Kumar, Manoranjan
Understanding the interplay of strong correlation and temperature in nodal-line semimetals can offer novel ways to control spin currents. Here we consider the 3d-5d double-perovskite Ba$_{2}$CoWO$_{6}$, which features mirror-symmetry-protected nodal-
Externí odkaz:
http://arxiv.org/abs/2408.15754
We explore the intriguing topological itinerant magnet MgMn$_6$Sn$_6$, characterized by bilayer kagome Mn layers encasing a hexagonal Sn layer. Using \textit{ab initio} Density functional theory and Dynamical mean-field theory calculations, we uncove
Externí odkaz:
http://arxiv.org/abs/2408.02504
Autor:
Singh, Mahima, Sau, Jyotirmoy, Rai, Banik, Panda, Arunanshu, Kumar, Manoranjan, Kumar, Nitesh
Publikováno v:
Physical Review Materials 8, 084201 (2024)
The intrinsic anomalous Hall conductivity (AHC) in a ferromagnetic metal is completely determined by its band structure. Since the spin orientation direction is an important band-structure tuning parameter, it is highly desirable to study the anomalo
Externí odkaz:
http://arxiv.org/abs/2403.19581
Employing first-principles modelling and many-body methods, the magnetic properties of spin-1/2 chain compound NaVOPO$_4$ are explored. The extensive first-principles calculations establish an intricate three-dimensionally coupled model that consists
Externí odkaz:
http://arxiv.org/abs/2403.10025
The frustrated ladder with alternate ferromagnetic(F) exchange $-J_F$ and AF exchange $J_A$ to first neighbors and F exchange $-J_L$ to second neighbors is studied by exact diagonalization (ED) and density matrix renormalization group (DMRG) calculat
Externí odkaz:
http://arxiv.org/abs/2403.05238
Motivated by the largely unexplored domain of multi-polar ordered spin states in the Kitaev-Heisenberg (KH) systems we investigate the ground state dynamics of the spin-$\frac{1}{2}$ KH model, focusing on quadrupolar (QP) order in 2-leg ladder and tw
Externí odkaz:
http://arxiv.org/abs/2312.15609
Two legged skewed spin-$\frac{1}{2}$ ladders are frustrated and exhibit exotic quantum phases in ground state due to strong quantum fluctuations and competing spin exchanges. Here, we study ground state properties of a spin-$\frac{1}{2}$ Heisenberg m
Externí odkaz:
http://arxiv.org/abs/2311.05031
Autor:
Das, Sambunath, Dey, Dayasindhu, Raghunathan, Rajamani, Soos, Zoltán G., Kumar, Manoranjan, Ramasesha, S.
In this brief review, we introduce a new spin ladder system called skewed spin ladders and discuss the exotic quantum phases of this system. The spin ladders studied are the 5/7, 3/4 and 3/5 systems corresponding to alternately fused 5 and 7 membered
Externí odkaz:
http://arxiv.org/abs/2311.05000