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arXiv · 1809.08777

Berry Phase of Dirac Nodal Line Semimetal in Single-Component Molecular Conductor

Yoshikazu Suzumura·Ai Yamakage
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Abstract

The Berry phase and curvature are studied for the Dirac nodal line semimetal of single-component molecular conductor [Pd(dddt)$_2$]. Using two-band model on the basis of a tight-binding model, it is shown that the Berry curvature, $\bm{B}(\bm{k})$, exists along a loop of the nodal line, on which the Berry phase is obtained from surface integral of $\bm{B}(\bm{k})$. The Berry phase, which is called Zak phase, is also calculated from one-dimensional integral of the Berry connection along a line between two equivalent points of boundaries of Brillouin zone. The possible experiment is discussed in terms of the Berry phase.

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Yoshikazu Suzumura, Ai Yamakage. 2018-09-24. Berry Phase of Dirac Nodal Line Semimetal in Single-Component Molecular Conductor. https://doi.org/10.7566/jpsj.87.093704

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