Unidirectionally excited phonon polaritons in high-symmetry orthorhombic crystals

1. Zhang, Q.
2. Ou, Q.
3. Si, G.
4. Hu, G.
5. Dong, S.
6. Chen, Y.
7. Ni, J.
8. Zhao, C.
9. Fuhrer, M.S.
10. Yang, Y.
11. Alù, A.
12. Hillenbrand, R.
13. Qiu, C.-W.