Amplification of valley polarization in an hBN-separated
MoSe
2
−
WSe
2
heterostructure
Fateme Mahdikhany, Jacob Cutshall, Daniel Shanks, Garett Reichenbach, Davoud Adinehloo, Michael R. Koehler, David G. Mandrus, Takashi Taniguchi, Kenji Watanabe, Vasili Perebeinos, Brian J. LeRoy, John R. Schaibley.