Engineering Kitaev exchange in stacked iridate layers: impact of inter-layer species on in-plane magnetism
Engineering Kitaev exchange in stacked iridate layers: impact of inter-layer species on in-plane magnetism
复制标题
堆叠铱酸盐层中的工程基塔耶夫交换:层间物质对面内磁性的影响
DOI:
10.1039/c8sc03018a
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发表时间:
2019
期刊:
影响因子:
8.4
通讯作者:
L. Hozoi
中科院分区:
文献类型:
--
作者:
R. Yadav;M. S. Eldeeb;R. Ray;S. Aswartham;M. I. Sturza;S. Nishimoto;J. van den Brink;L. Hozoi
Novel functionalities may be achieved in oxide electronics by appropriate stacking of planar oxide layers of different metallic species, MOp and M′Oq. The simplest mechanism allowing the tailoring of the electronic states and physical properties of such heterostructures is of electrostatic nature—charge imbalance between the M and M′ cations. Here we clarify the effect of interlayer electrostatics on the anisotropic Kitaev exchange in H3LiIr2O6, a recently proposed realization of the Kitaev spin liquid. By quantum chemical calculations, we show that the precise position of H+ cations between magnetically active [LiIr2O6]3− honeycomb-like layers has a strong impact on the magnitude of Kitaev interactions. In particular, it is found that stacking with straight interlayer O–H–O links is detrimental to in-plane Kitaev exchange since coordination by a single H-ion of the O ligand implies an axial Coulomb potential at the O site and unfavorable polarization of the O 2p orbitals mediating the Ir–Ir interactions. Our results therefore provide valuable guidelines for the rational design of Kitaev quantum magnets, indicating unprecedented Kitaev interactions of ≈40 meV if the linear interlayer linkage is removed.
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影响因子:
4.6
作者:
Yadav R;Bogdanov NA;Katukuri VM;Nishimoto S;van den Brink J;Hozoi L
通讯作者:
Hozoi L
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
Marcus Jenderka;R. Schmidt‐Grund;M. Grundmann;M. Lorenz
通讯作者:
M. Lorenz
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
A. Catuneanu;J. Rau;Heung;H. Kee
通讯作者:
H. Kee
影响因子:
8.6
作者:
Baek, S-H.;Do, S-H.;Buechner, B.
通讯作者:
Buechner, B.
影响因子:
16.6
作者:
Nishimoto S;Katukuri VM;Yushankhai V;Stoll H;Rößler UK;Hozoi L;Rousochatzakis I;van den Brink J
通讯作者:
van den Brink J