scholarly journals Effects of electron correlation, electron-phonon coupling, and spin-orbit coupling on the isovalent Pd-substituted superconductorSrPt3P

2016 ◽  
Vol 93 (21) ◽  
Author(s):  
Kangkang Hu ◽  
Bo Gao ◽  
Qiucheng Ji ◽  
Yonghui Ma ◽  
Wei Li ◽  
...  
Keyword(s):  
Electron Correlation ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Phonon Coupling ◽  
Electron Phonon Coupling

scholarly journals Spin-orbit coupling enhanced superconductivity in Bi-rich compounds ABi3 (A = Sr and Ba)

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
D. F. Shao ◽  
X. Luo ◽  
W. J. Lu ◽  
L. Hu ◽  
X. D. Zhu ◽  
...  
Keyword(s):  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Superconducting Transition ◽  
Phonon Coupling ◽  
Electron Phonon Coupling ◽  
Enhanced Superconductivity ◽  
Phonon Properties ◽  
Strong Spin

Abstract Recently, Bi-based compounds have attracted attentions because of the strong spin-orbit coupling (SOC). In this work, we figured out the role of SOC in ABi3 (A = Sr and Ba) by theoretical investigation of the band structures, phonon properties, and electron-phonon coupling. Without SOC, strong Fermi surface nesting leads to phonon instabilities in ABi3. SOC suppresses the nesting and stabilizes the structure. Moreover, without SOC the calculation largely underestimates the superconducting transition temperatures (T c ), while with SOC the calculated T c are very close to those determined by measurements on single crystal samples. The SOC enhanced superconductivity in ABi3 is due to not only the SOC induced phonon softening, but also the SOC related increase of electron-phonon coupling matrix elements. ABi3 can be potential platforms to construct heterostructure of superconductor/topological insulator to realize topological superconductivity.

Atomic-scale Evidence of Local Kondo Scattering in a 4d-electron Ruthenate Ultrathin Film

2021 ◽  
Author(s):  
Chuangye Song ◽  
Tao Bo ◽  
Xin Liu ◽  
Pengjie Guo ◽  
Sheng Meng ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxide ◽  
Surface Structure ◽  
Electron Correlation ◽  
Transition Metal Oxide ◽  
Orbit Coupling ◽  
Atomic Scale ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Reconstructed Surface

Perovskite SrRuO3 is a unique 4d transition metal oxide with coexisting spin-orbit coupling (SOC) and electron-electron correlation. However, intrinsic, non-reconstructed surface structure of SrRuO3 has not been reported so far....

Spin polarization of polaron in quasi-one dimensional organic system

2015 ◽  
Vol 29 (02) ◽  
pp. 1450266 ◽  
Author(s):  
Hong Jiang ◽  
Chao Zhang ◽  
Xuening Hu ◽  
Guichao Hu ◽  
Shijie Xie
Keyword(s):  
Spin Polarization ◽  
Organic Materials ◽  
Orbit Coupling ◽  
Electron Interaction ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Organic System ◽  
Electron Phonon Coupling ◽  
Spin Polarized ◽  
Ssh Model

The spin polarization of polarons in quasi-1D organic materials has been investigated by using the extended Su–Schrieffer–Heeger (SSH) model with spin-orbit coupling. Results show that the polaron is partly spin polarized, and that the electron–electron interaction and spin-orbit coupling compete with each other during the formation of spin polarization. The dependence of spin polarization on electron–phonon coupling is also revealed. Our results demonstrate that spin polarization is well correlated with polaron localization, thus providing useful guidance for exploring magnetic effects in organic materials.

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