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Epitaxial strain induced magnetic transitions and phonon instabilities of the tetragonal SrRuO3
He He, Hang-Chen Ding, Yong-Chao Gao +3
Using density-functional theory calculations, we investigate the magnetic as well as the dynamical properties of tetragonal SrRuO3 (SRO) under the influence of epitaxial strain. It…
Giant exchange bias and ferromagnetism in the CoO shell of Co/CoO-MgO core-shell nanoparticles
C. N. Ge, Xiangang Wan, E. Pellegrin +3
Using magnetron sputtering, we produced a series of Co/CoO-MgO nanoparticles on Si(100) substrates. High-resolution transmission electron microscopy (HRTEM) image shows that small…
Density-functional calculations of the electronic structure and lattice dynamics of superconducting LaOFBiS: Evidence for an electron-phonon interaction near the charge-density-wave instability
Xiangang Wan, Hang-Chen Ding, Sergey Y. Savrasov +1
We discuss the electronic structure, lattice dynamics and electron-phonon interaction of newly discovered superconductor LaOFBiS using density functional base…
BaFe2Se2O as an Iron-Based Mott Insulator with Antiferromagnetic Order
Fei Han, Xiangang Wan, Bing Shen +1
A new compound with a quasi-two-dimensional array of FeSe3O tetrahedra and an orthorombic structure, namely BaFe2Se2O, has been successfully fabricated. Experimental results show t…
Spin-orbit tuned metal-insulator transitions in single-crystal Sr2Ir1-xRhxO4 (0\leqx\leq1)
T. F. Qi, O. B. Korneta, L. Li +6
Sr2IrO4 is a magnetic insulator driven by spin-orbit interaction (SOI) whereas the isoelectronic and isostructural Sr2RhO4 is a paramagnetic metal. The contrasting ground states ha…
The mechanism of anisotropic exchange interaction in superconducting iron arsenides
Xiangang Wan, Jinming Dong, Xi Dai
Using a combination of linear response theory and constrained orbital hybridization approach, we study the mechanism of magnetic exchange interaction of iron-based superconductor.…