Boundary conditions and surface states spectrum in Weyl semimetal

Ж.А. Девизорова; В.А. Волков

Boundary conditions and surface states spectrum in Weyl semimetal

Ж.А. Девизорова¹, В.А. Волков²

research article Pages: 16-17

¹ аспирант, МФТИ
² д.ф.-м.н., гл. науч. сотрудник, ИРЭ им. В.А. Котельникова РАН (Москва)

Keywords: surface states Weyl semimetal Fermi arcs

Abstract

We propose analytical model describing Fermi-arcs in Weyl semimetal, which were experimentally observed recently. For this purpose, effective two-valley Hamiltonian is supplemented by the boundary condition accounting both intravalley and intervalley interaction on the surface. The constant energy contours of the surface states are studied. It is shown that taking into account the interfacial intervalley interaction leads to the formation of the constant energy contours with Fermi-arcs shape.

How to cite

Девизорова Ж.А., Волков В.А. Граничные условия и спектр поверхностных состояний в вейлевском полуметалле // Нелинейный мир. 2017. № 2. С. 16–17.

References

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Xu S.-Y., Belopolski I., Alidoust N., Neupane M., Bian G., Zhang C., Sankar R., Chang G., Yuan Z., Lee C.-C.,. Huang S.-M, Zheng H., Ma J., Sanchez D.S., Wang B., Bansil A., Chou F., Shibayev P.P., Lin H., Jia S., Hasan M.Z. Discovery of a Weyl fermion semimetal and topological Fermi arcs // Science. 2015. № 349. 613.

[1] Wan X., Turner A.M., Vishwanath A., Savrasov S.Y. Topological semimetal and Fermi-arc surface states in the electronic structure of pyrochlore iridates // Phys. Rev. 2011. B 83. 205101.

[2] Huang S.-M., Xu S.-Y., Belopolski I., Lee C.-C., Chang G., Wang B., Alidoust N., Bian G., Neupane M., Zhang C., Jia S., Bansil A., Lin H., Hasan M.Z. A Weyl Fermion semimetal with surface Fermi arcs in the transition metal monopnictide TaAs class // Nature Comm. 2015. № 6. 7373.

[3] Xu S.-Y., Belopolski I., Alidoust N., Neupane M., Bian G., Zhang C., Sankar R., Chang G., Yuan Z., Lee C.-C.,. Huang S.-M, Zheng H., Ma J., Sanchez D.S., Wang B., Bansil A., Chou F., Shibayev P.P., Lin H., Jia S., Hasan M.Z. Discovery of a Weyl fermion semimetal and topological Fermi arcs // Science. 2015. № 349. 613.