Floquet engineering could, in principle, induce a topological phase in semiconductors, but clear evidence has been lacking. Now it is shown in SnTe that femtose

Floquet engineering could, in principle, induce a topological phase in semiconductors, but clear evidence has been lacking. Now it is shown in SnTe that femtosecond light pulses briefly create a topological state that is absent at equilibrium. [↧](https://t.co/cpSNUpZvcW)