Hyperfine coupling and spin polarization in the bulk of the topological insulator Bi${}_2$Se${}_3$

S. Mukhopadhyay, S. Krämer, H. Mayaffre +10

Nuclear magnetic resonance (NMR) and transport measurements have been performed at high magnetic fields and low temperatures in a series of $n$-type Bi${}_2$Se${}_3$ crystals. In l…