Emergent Long-Lived Zitterbewegung in Su–Schrieffer–Heeger Lattice with Third-Nearest-Neighbor Hopping

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Аннотация

We investigate the wavepacket dynamics of quasiparticles in a Su–Schrieffer–Heeger lattice with third-nearest-neighbor hopping. The results reveal that the life-span of Zitterbewegung can be prolonged. To better understand the mechanism, we discuss the band structure and the long-time average of inverse participation rate. The results show that the band structure can be effectively manipulated as a quasi-flat band by introducing the third-nearest-neighbor hopping. This, as a unique advantage over the standard Su–Schrieffer–Heeger model, will bring about restrained diffusion of the wavepacket as well as dramatically stretched life-span of Zitterbewegung, thus will promise wide applications in condensed matter physics.

Об авторах

M. -N Chen

Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, SPTE, South China Normal University, 510006, Guangzhou, People’s Republic of China

Email: letters@kapitza.ras.ru

X. -J Yu

International Center for Quantum Materials, School of Physics, Peking University, 100871, Beijing, People’s Republic of China

Email: letters@kapitza.ras.ru

Z. Li

Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, SPTE, South China Normal University, 510006, Guangzhou, People’s Republic of China

Автор, ответственный за переписку.
Email: letters@kapitza.ras.ru

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