In-plane anisotropic and ultra-low-loss polaritons in a natural van der Waals crystal

1. Ma, W.
2. Alonso-González, P.
3. Li, S.
4. Nikitin, A.Y.
5. Yuan, J.
6. Martín-Sánchez, J.
7. Taboada-Gutiérrez, J.
8. Amenabar, I.
9. Li, P.
10. Vélez, S.
11. Tollan, C.
12. Dai, Z.
13. Zhang, Y.
14. Sriram, S.
15. Kalantar-Zadeh, K.
16. Lee, S.-T.
17. Hillenbrand, R.
18. Bao, Q.