Ferromagnetic Phase in Nonequilibrium Quantum Dots.
Ferromagnetic Phase in Nonequilibrium Quantum Dots.
复制标题
非平衡量子点中的铁磁相
DOI:
10.1038/s41598-017-18440-5
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发表时间:
2017-12-22
影响因子:
4.6
通讯作者:
Yan Y
中科院分区:
文献类型:
--
作者:
Hou W;Wang Y;Wei J;Yan Y
By nonperturbatively solving the nonequilibrium Anderson two-impurity model with the hierarchical equations of motion approach, we report a robust ferromagnetic (FM) phase in series-coupled double quantum dots, which can suppress the antiferromagnetic (AFM) phase and dominate the phase diagram at finite bias and detuning energy in the strongly correlated limit. The FM exchange interaction origins from the passive parallel spin arrangement caused by the Pauli exclusion principle during the electrons transport. At very low temperature, the Kondo screening of the magnetic moment in the FM phase induces some nonequilibrium Kondo effects in magnetic susceptibility, spectral functions and current. In the weakly correlated limit, the AFM phase is found still stable, therefore, a magnetic-field-free internal control of spin states can be expected through the continuous FM–AFM phase transition.
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DOI:
10.1098/rspa.1963.0204
发表时间:
1963-01-01
影响因子:
--
作者:
HUBBARD, J
通讯作者:
HUBBARD, J
影响因子:
4.4
作者:
Jin, Jinshuang;Wang, Shikuan;Yan, YiJing
通讯作者:
Yan, YiJing
影响因子:
3.7
作者:
Muralidharan, Bhaskaran;Datta, Supriyo
通讯作者:
Datta, Supriyo
影响因子:
56.9
作者:
Ono, K;Austing, DG;Tarucha, S
通讯作者:
Tarucha, S
影响因子:
8.6
作者:
Batista, CD;Bonca, J;Gubernatis, JE
通讯作者:
Gubernatis, JE