Experimental Evidence of Hidden Topological Surface States in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>PbBi</mml:mi><mml:mn>4</mml:mn></mml:msub><mml:msub><mml:mi>Te</mml:mi><mml:mn>7</mml:mn></mml:msub></mml:math>Taichi Okuda, M. Taniguchi, H. Namatame et al.|Physical Review Letters|2013Cited by 50