INELASTIC ELECTRON-TUNNELING INTO P-BI2TE3 CRYSTALS

Inelastic electron tunneling experiments have been performed in p-Bi2T e3-Al oxide-Al junctions. Strong peaks due to electron-acoustic phonon coupling are observed in the second derivative tunnel spectrum. These phonon structures are closely related to the effective Debye temperat ure. This gives direct evidence that the electron-acoustic phonon scat tering plays a dominant role in p-Bi2Te3. (C) 1998 American Institute of Physics.