Nodal line semimetal states in positive electrode material of lead-acid battery: Lead dioxide family and its derivatives

26 Apr 2018 Zhang Run-Wu Liu Cheng-Cheng Ma Da-Shuai Wang Maoyuan Yao Yugui

Based on first-principles calculations and symmetry analysis, we report that the three-dimensional (3D) nodal line (NL) semimetal phases can be realized in the lead dioxide family (\emph{$\alpha$}-PbO$_2$ and \emph{$\beta$}-PbO$_2$) and its derivatives. The \emph{$\beta$}-PbO$_2$ features two orthogonal nodal rings around the Fermi level, protected by the mirror reflection symmetry... (read more)

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