S. Mohapatra

activity

20152025

most citedMagnetic excitations in a three-orbital model for the strongly spin-orbit coupled iridates: Effect of mixing between the J=1/2 and 3/2 sectors

19 citations · 86 across the 17 of their papers we have counts for

collaborators

Showing cond-mat.str-elShow all

17 papers · 1 filter

cond-mat.str-el2025

Spin-orbital order and excitations in $3 d^{4}$ , $4 d^{4}$ , and $5 d^{4}$ systems: Application to $BaFe O_{3}$ , $S r_{2} Ru O_{4}$ , $S r_{2} YIr O_{6}$ , and $K_{2} OsC l_{6} 4$

Shahid Ahmad, Harshvardhan Parmar, Shubhajyoti Mohapatra +1

Evolution of composite spin-orbital order and coupled spin-orbital excitations is studied in a variety of $d^{4}$ systems with $n$ = $4$ electrons in the $t_{2 g}$ orbital sector using…

cond-mat.str-el2022

Orbital entangled antiferromagnetoc order and spin-orbit-distortion exciton in $S r_{2} V O_{4}$

Shubhajyoti Mohapatra, Dheeraj Kumar Singh, Rajyavardhan Ray +2

With electron filling $n = 1$ in the $S r_{2} V O_{4}$ compound, the octahedrally coordinated $t_{2g}$ orbitals are strongly active due to tetragonal distortion induced crystal fiel…

cond-mat.str-el2021

Spin-orbit coupling and magnetism in $S r_{2} Cr O_{4}$

Shubhajyoti Mohapatra, Dheeraj Kumar Singh, Avinash Singh

With octahedrally coordinated $t_{2g}$ orbitals which are active at filling $n = 2$ , the $S r_{2} Cr O_{4}$ compound exhibits rich interplay of spin-orbital physics with tetragonal…

cond-mat.str-el2021★ 3 cited

Coupled spin-orbital fluctuations in a three orbital model for $4 d$ and $5 d$ oxides with electron fillings $n = 3, 4, 5$ -- Application to $NaOs O_{3}$ , $C a_{2} Ru O_{4}$ , and $S r_{2} Ir O_{4}$

Shubhajyoti Mohapatra, Avinash Singh

A unified approach is presented for investigating coupled spin-orbital fluctuations within a realistic three-orbital model for strongly spin-orbit coupled systems with electron fil…

cond-mat.str-el2020★ 3 cited

Role of orbital off-diagonal spin and charge condensates in a three orbital model for $C a_{2} Ru O_{4}$ -- Coulomb renormalized spin-orbit coupling, orbital moment, and tunable magnetic order

Shubhajyoti Mohapatra, Ritajit Kundu, Ashutosh Dubey +2

Strongly anisotropic spin-orbit coupling (SOC) renormalization and strongly enhanced orbital magnetic moments are obtained in the fully self consistent approach including the orbit…

cond-mat.str-el2020★ 10 cited

Magnetic reorientation transition in a three orbital model for $C a_{2} Ru O_{4}$ -- Interplay of spin-orbit coupling, tetragonal distortion, and Coulomb interactions

Shubhajyoti Mohapatra, Avinash Singh

Including the orbital off-diagonal spin and charge condensates in the self consistent determination of magnetic order within a realistic three-orbital model for the $4 d^{4}$ compound…

cond-mat.str-el2020★ 5 cited

Correlated motion of particle-hole excitations across the renormalized spin-orbit gap in $S r_{2} Ir O_{4}$

Shubhajyoti Mohapatra, Avinash Singh

The high-energy collective modes of particle-hole excitations across the spin-orbit gap in $S r_{2} Ir O_{4}$ are investigated using the transformed Coulomb interaction terms in the p…

cond-mat.str-el2020★ 3 cited

Pseudo-spin rotation symmetry breaking by Coulomb interaction terms in spin-orbit coupled systems

Shubhajyoti Mohapatra, Avinash Singh

By transforming from the pure-spin-orbital ( $t_{2g}$ ) basis to the spin-orbital entangled pseudo-spin-orbital basis, the pseudo-spin rotation symmetry of the different Coulomb…

cond-mat.str-el2019

Magnetic order and anisotropic interactions induced by mixing between the $J = 1/2$ and $3/2$ sectors in spin-orbit coupled honeycomb-lattice compounds

Shubhajyoti Mohapatra, Avinash Singh

Novel magnetic ordering on the honeycomb lattice due to emergent weak anisotropic interactions generated by the mixing between the $J = 1/2$ sector and the magnetically inactive 3/2…

cond-mat.str-el2019★ 10 cited

Octahedral tilting induced isospin reorientation transition in iridate heterostructures

Shubhajyoti Mohapatra, Sreemayee Aditya, Rohit Mukherjee +1

Iridate heterostructures are gaining interest as their magnetic properties are much more sensitive to structural distortion compared to pure spin systems due to spin-orbital entang…

cond-mat.str-el2019★ 1 cited

Intra- and inter-orbital correlated electron spin dynamics in $S r_{2} Ir O_{4}$ : spin-wave gap and spin-orbit exciton

Shubhajyoti Mohapatra, Avinash Singh

Transformation of Coulomb interaction terms to the pseudo-orbital basis constituted by $J = 1/2$ and $3/2$ states arising from spin-orbit coupling provides a versatile tool. This for…

cond-mat.str-el2018★ 5 cited

Spin-orbit coupling induced magnetic anisotropy and large spin wave gap in $NaOs O_{3}$

Avinash Singh, Shubhajyoti Mohapatra, Churna Bhandari +1

The role of spin-orbit coupling and Hund's rule coupling on magnetic ordering, anisotropy, and excitations are investigated within a minimal three-orbital model for the $5 d^{3}$ comp…

cond-mat.str-el2017★ 7 cited

Spin waves and stability of zigzag order in the Hubbard model with spin-dependent hopping terms - Application to the honeycomb lattice compounds $N a_{2} Ir O_{3}$ and $α - RuC l_{3}$

Shubhajyoti Mohapatra, Avinash Singh

Spin waves in the zigzag ordered state on a honeycomb lattice are investigated within a Hubbard model with spin-dependent hopping terms. Roles of the emergent Kitaev, Heisenberg, D…

cond-mat.str-el2017★ 8 cited

Effects of the structural distortion on the electronic band structure of {\boldmath $NaOs O_{3}$ } studied within density functional theory and a three-orbital model

Shubhajyoti Mohapatra, Churna Bhandari, Sashi Satpathy +1

Effects of the structural distortion associated with the $Os O_{6}$ octahedral rotation and tilting on the electronic band structure and magnetic anisotropy energy for the $5 d^{3}$ …

cond-mat.str-el2016★ 19 cited

Magnetic excitations in a three-orbital model for the strongly spin-orbit coupled iridates: Effect of mixing between the J=1/2 and 3/2 sectors

Shubhajyoti Mohapatra, Jeroen van den Brink, Avinash Singh

A three-orbital-model approach for studying spin wave excitations in the strongly spin-orbit coupled layered perovskite iridates is presented which provides a unified description o…

cond-mat.str-el2016★ 9 cited

Spin waves in the AF state of the $t$ - $t^{'}$ Hubbard model on the fcc lattice: competing interactions, frustration, and instabilities

Avinash Singh, Shubhajyoti Mohapatra, Timothy Ziman +1

Spin waves in the type-III ordered antiferromagnetic state of the frustrated $t$ - $t^{'}$ Hubbard model on the fcc lattice are calculated to investigate finite- $U$ -induced competing in…

cond-mat.str-el2015★ 3 cited

Multi-orbital quantum antiferromagnetism in iron pnictides --- effective spin couplings and quantum corrections to sublattice magnetization

Sayandip Ghosh, Nimisha Raghuvanshi, Shubhajyoti Mohapatra +2

Towards understanding the multi-orbital quantum antiferromagnetism in iron pnictides, effective spin couplings and spin fluctuation induced quantum corrections to sublattice magnet…

Spin-orbital order and excitations in 3d4, 4d4, and 5d4 systems: Application to BaFeO3​, Sr2​RuO4​, Sr2​YIrO6​, and K2​OsCl6​4

Orbital entangled antiferromagnetoc order and spin-orbit-distortion exciton in Sr2​VO4​

Spin-orbit coupling and magnetism in Sr2​CrO4​

Coupled spin-orbital fluctuations in a three orbital model for 4d and 5d oxides with electron fillings n=3,4,5 -- Application to NaOsO3​, Ca2​RuO4​, and Sr2​IrO4​

Role of orbital off-diagonal spin and charge condensates in a three orbital model for Ca2​RuO4​ -- Coulomb renormalized spin-orbit coupling, orbital moment, and tunable magnetic order

Magnetic reorientation transition in a three orbital model for Ca2​RuO4​ -- Interplay of spin-orbit coupling, tetragonal distortion, and Coulomb interactions

Correlated motion of particle-hole excitations across the renormalized spin-orbit gap in Sr2​IrO4​

Pseudo-spin rotation symmetry breaking by Coulomb interaction terms in spin-orbit coupled systems

Magnetic order and anisotropic interactions induced by mixing between the J=1/2 and 3/2 sectors in spin-orbit coupled honeycomb-lattice compounds

Octahedral tilting induced isospin reorientation transition in iridate heterostructures

Intra- and inter-orbital correlated electron spin dynamics in Sr2​IrO4​: spin-wave gap and spin-orbit exciton

Spin-orbit coupling induced magnetic anisotropy and large spin wave gap in NaOsO3​

Spin waves and stability of zigzag order in the Hubbard model with spin-dependent hopping terms - Application to the honeycomb lattice compounds Na2​IrO3​ and α−RuCl3​

Effects of the structural distortion on the electronic band structure of {\boldmath NaOsO3​} studied within density functional theory and a three-orbital model

Magnetic excitations in a three-orbital model for the strongly spin-orbit coupled iridates: Effect of mixing between the J=1/2 and 3/2 sectors

Spin waves in the AF state of the t-t′ Hubbard model on the fcc lattice: competing interactions, frustration, and instabilities

Multi-orbital quantum antiferromagnetism in iron pnictides --- effective spin couplings and quantum corrections to sublattice magnetization

Spin-orbital order and excitations in $3 d^{4}$ , $4 d^{4}$ , and $5 d^{4}$ systems: Application to $BaFe O_{3}$ , $S r_{2} Ru O_{4}$ , $S r_{2} YIr O_{6}$ , and $K_{2} OsC l_{6} 4$

Orbital entangled antiferromagnetoc order and spin-orbit-distortion exciton in $S r_{2} V O_{4}$

Spin-orbit coupling and magnetism in $S r_{2} Cr O_{4}$

Coupled spin-orbital fluctuations in a three orbital model for $4 d$ and $5 d$ oxides with electron fillings $n = 3, 4, 5$ -- Application to $NaOs O_{3}$ , $C a_{2} Ru O_{4}$ , and $S r_{2} Ir O_{4}$

Role of orbital off-diagonal spin and charge condensates in a three orbital model for $C a_{2} Ru O_{4}$ -- Coulomb renormalized spin-orbit coupling, orbital moment, and tunable magnetic order

Magnetic reorientation transition in a three orbital model for $C a_{2} Ru O_{4}$ -- Interplay of spin-orbit coupling, tetragonal distortion, and Coulomb interactions

Correlated motion of particle-hole excitations across the renormalized spin-orbit gap in $S r_{2} Ir O_{4}$

Magnetic order and anisotropic interactions induced by mixing between the $J = 1/2$ and $3/2$ sectors in spin-orbit coupled honeycomb-lattice compounds

Intra- and inter-orbital correlated electron spin dynamics in $S r_{2} Ir O_{4}$ : spin-wave gap and spin-orbit exciton

Spin-orbit coupling induced magnetic anisotropy and large spin wave gap in $NaOs O_{3}$

Spin waves and stability of zigzag order in the Hubbard model with spin-dependent hopping terms - Application to the honeycomb lattice compounds $N a_{2} Ir O_{3}$ and $α - RuC l_{3}$

Effects of the structural distortion on the electronic band structure of {\boldmath $NaOs O_{3}$ } studied within density functional theory and a three-orbital model

Spin waves in the AF state of the $t$ - $t^{'}$ Hubbard model on the fcc lattice: competing interactions, frustration, and instabilities