什么是pyrochlore iridates?基本上可以理解为具有烧绿石(pyrochlore)结构的铱(Ir)的氧化物。化学式为A2Ir2O7(A=Y,Bi or Ln),其中A可以是Y,Bi,也可以是镧系元素。 为什么我们会对pyrochlore iridates 感兴趣呢?这要从这张图说起: 图1 phase diagram 其中U是U: electron correlation, lambda:spin-orbit coup...
Along this idea, we present the synthesis of molecular fluorido-iridates incorporating spatially isolated [IrF6]2 À units. Their local magnetic properties are probed by X-ray magnetic circular dichroism (XMCD) spectroscopy demonstrating that the [IrF6]2 À and {IrO6}8 À units possess ...
F. Mitchell1 Recently, oxides of Ir4+ have received renewed attention in the condensed matter physics community, as it has been reported that certain iridates have a strongly spin-orbital coupled (SOC) electronic state, Jeff = ½, that defines the electronic and magnetic properties...
Non-resonant Raman spectroscopy in the hard X-ray regime has been used to explore the electronic structure of the first two members of the Ruddlesden-Popper series Sr$_{n+1}$Ir$_n$O$_{3n+1}$ of iridates. By tuning the photon energy transfer around 530 eV
Kitaev-Heisenberg models for iridates on the triangular, hyperkagome,\n kagome, fcc, and pyrochlore lattices Vishwanath, Kitaev-heisenberg models for iridates on the triangular, hyperkagome, kagome, fcc, and pyrochlore lattices, Phys. Rev. B 89 (2014) 014414... I Kimchi,A Vishwanath - 《Ph...
A burning question in the emerging field of spin-orbit driven insulating iridates, such as Na2IrO3 and Li2IrO3 is whether the observed insulating state should be classified as a Mott-Hubbard insulator derived from a half-filled relativistic j_eff=1/2 ban
Breakdown of the spin-orbit imposed Jeff = 0 singlet state in double-perovskite iridates with Ir5+(5d4) ionsThe strong spin-orbit interaction is expected to impose a nonmagnetic singlet ground state, Jeff = 0, in iridates having ... H Zhang,J Terizc,Y Feng,... - American Physical Soci...
www.nature.com/scientificreports OPEN Robust pinned magnetisation in A2Ir2O7 iridates, the case of Er2Ir2O7 and L u2Ir2O7 flux‑grown single crystals Daniel Staško 1*, Filip Hájek 1, Kristina Vlášková 1, Jiří Kaštil 2, Margarida ...
Motivated by these results, we investigate here the influence of a short laser pulse on the effective interaction in insulating 227 iridates. We use TDDFT + U to show that a reduction of U and of the magnetic order parameter m can be induced in the pyrochlore iridates. We then take...
Kitaev-Heisenberg models for iridates on the triangular, hyperkagome, kagome, fcc, and pyrochlore lattices 来自 arXiv.org 喜欢 0 阅读量: 75 作者:I Kimchi,A Vishwanath 摘要: The Kitaev-Heisenberg (KH) model has been proposed to capture magnetic interactions in iridate Mott insulators on the ...