T. Petersen

The detection of considerable spin frustration in honeycomb cobalt oxide compounds indicates the presence of sizable Kitaev interactions in these systems, enlarging the pool of Kit…

cond-mat.str-el2023★ 3 cited

Anisotropic Coulomb exchange as source of Kitaev and off-diagonal symmetric anisotropic couplings

Pritam Bhattacharyya, Thorben Petersen, Nikolay A. Bogdanov +1

Exchange underpins the magnetic properties of quantum matter. In its most basic form, it occurs through the interplay of Pauli's exclusion principle and Coulomb repulsion, being re…

cond-mat.str-el2023★ 8 cited

Resonating holes vs molecular spin-orbit coupled states in group-5 lacunar spinels

Thorben Petersen, Pritam Bhattacharyya, Ulrich K. Rößler +1

The valence electronic structure of magnetic centers is one of the factors that determines the characteristics of a magnet. It may refer to orbital degeneracy, as for $j_\text{eff}…

cond-mat.str-el2022★ 5 cited

Quantum chemical insights into hexaboride electronic structures: correlations within the boron $p$ -orbital subsystem

Thorben Petersen, Ulrich K. Rößler, Liviu Hozoi

The notion of strong electronic correlations arose in the context of $d$ -metal oxides such as NiO but can be exemplified on systems as simple as the H $_{2}$ molecule. Here we shed li…

cond-mat.str-el2022★ 6 cited

Spin-orbit excitons and electronic configuration of the $5 d^{4}$ insulator Sr $_{3}$ Ir $_{2}$ O $_{7}$ F $_{2}$

Zach Porter, Paul M. Sarte, Thorben Petersen +3

Here we report on the low-energy excitations within the paramagnetic spin-orbit insulator Sr $_{3}$ Ir $_{2}$ O $_{7}$ F $_{2}$ studied via resonant inelastic X-ray scattering, \textit{ab initio}…

cond-mat.str-el2022★ 12 cited

Electronic and structural properties of RbCeX $_{2}$ (X $_{2}$ : O $_{2}$ , S $_{2}$ , SeS, Se $_{2}$ , TeSe, Te $_{2}$ )

Brenden R. Ortiz, Mitchell M. Bordelon, Pritam Bhattacharyya +11

Triangular lattice delafossite compounds built from magnetic lanthanide ions are a topic of recent interest due to their frustrated magnetism and realization of quantum disordered…

cond-mat.str-el2020★ 10 cited

Energy scales in 4f1 delafossite magnets: crystal-field splittings larger than the strength of spin-orbit coupling in KCeO2

M. S. Eldeeb, T. Petersen, L. Hozoi +2

Ytterbium-based delafossites with effective S=1/2 moments are investigated intensively as candidates for quantum spin-liquid ground states. While the synthesis of related cerium co…

Relevance of on-site and intersite Coulomb interactions in the Kitaev-Heisenberg magnet Na3​Co2​SbO6​

Anisotropic Coulomb exchange as source of Kitaev and off-diagonal symmetric anisotropic couplings

Resonating holes vs molecular spin-orbit coupled states in group-5 lacunar spinels

Quantum chemical insights into hexaboride electronic structures: correlations within the boron p-orbital subsystem

Spin-orbit excitons and electronic configuration of the 5d4 insulator Sr3​Ir2​O7​F2​

Electronic and structural properties of RbCeX2​ (X2​: O2​, S2​, SeS, Se2​, TeSe, Te2​)

Energy scales in 4f1 delafossite magnets: crystal-field splittings larger than the strength of spin-orbit coupling in KCeO2

Relevance of on-site and intersite Coulomb interactions in the Kitaev-Heisenberg magnet Na $_{3}$ Co $_{2}$ SbO $_{6}$

Quantum chemical insights into hexaboride electronic structures: correlations within the boron $p$ -orbital subsystem

Spin-orbit excitons and electronic configuration of the $5 d^{4}$ insulator Sr $_{3}$ Ir $_{2}$ O $_{7}$ F $_{2}$

Electronic and structural properties of RbCeX $_{2}$ (X $_{2}$ : O $_{2}$ , S $_{2}$ , SeS, Se $_{2}$ , TeSe, Te $_{2}$ )