Topological Transition in a 3nm Thick Al Film Grown by Molecular Beam Epitaxy

Department of Physics, National Taiwan University, Taipei 106, Taiwan Department of Physics, BITS-Pilani, K. K. Birla Goa Campus, Zuarinagar, Goa 403726, India Graduate Institute of Applied Physics, National Taiwan University, Taipei 106, Taiwan Department of Electronics Engineering, National Chiao Tung University, Hsinchu 300, Taiwan Department of Physics, University of Central Florida, Orlando, FL 32816-2385, USA