Superexchange mechanism and quantum many body excitations in the archetypal di-Cu oxo-bridge
Superexchange mechanism and quantum many body excitations in the archetypal di-Cu oxo-bridge
复制标题
典型二铜氧桥中的超交换机制和量子多体激发
DOI:
10.1038/s42005-019-0270-1
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发表时间:
2020
影响因子:
5.5
通讯作者:
Al-Badri M
中科院分区:
文献类型:
--
作者:
Al-Badri M
The hemocyanin protein binds and transports molecular oxygen via two copper atoms at its core. The singlet state of thecore is thought to be stabilised by a superexchange pathway, but detailed in situ computational analysis is complicated by the multi-reference character of the electronic ground state. Here, electronic correlation effects in the functional site of hemocyanin are investigated using a novel approach, treating the localised copper 3d electrons with cluster dynamical mean field theory. This enables us to account for dynamical and multi-reference quantum mechanics, capturing valence and spin fluctuations of the 3d electrons. Our approach explains the stabilisation of the experimentally observed di-Cu singlet for the butterfliedcore, with localised charge and incoherent scattering processes across the oxo-bridge that prevent long-lived charge excitations. This suggests that the magnetic structure of hemocyanin is largely influenced by the many-body corrections.
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影响因子:
3.7
作者:
E. Linscott;D. Cole;M. Payne;D. O'Regan
通讯作者:
E. Linscott;D. Cole;M. Payne;D. O'Regan
影响因子:
3.7
作者:
M. Aichhorn;M. Daghofer;H. Evertz;W. Linden
通讯作者:
W. Linden
DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
T. Pruschke;M. Zölfl
通讯作者:
M. Zölfl
影响因子:
5.5
作者:
Liakos, Dimitrios G.;Neese, Frank
通讯作者:
Neese, Frank
DOI:
--
发表时间:
1978
期刊:
影响因子:
--
作者:
A. Julg
通讯作者:
A. Julg