caa a22 4500 445304014 CHVBK 20180317142607.0 cr unu---uuuuu 170323e20101101xx s 000 0 eng 10.1007/s12274-010-0047-z doi (NATIONALLICENCE)springer-10.1007/s12274-010-0047-z Van Hove singularities as a result of quantum confinement: The origin of intriguing physical properties in Pb thin films [Elektronische Daten] [Yu Sun, S. Souma, Wen Li, T. Sato, Xie Zhu, Guang Wang, Xi Chen, Xu Ma, Qi Xue, Jin Jia, T. Takahashi, T. Sakurai] In situ angle-resolved photoemission spectroscopy (ARPES) and scanning tunneling spectroscopy (STS) have been used to study the electronic structure of Pb thin films grown on a Si(111) substrates. The experiments reveal that the electronic structure near the Fermi energy is dominated by a set of m-shaped subbands because of strong quantum confinement in the films, and the tops of the m-shaped subbands form an intriguing ring-like Van Hove singularity. Combined with theoretical calculations, we show that it is the Van Hove singularity that leads to an extremely high density of states near the Fermi energy and the recently reported strong oscillations (with a period of two monolayers) in various properties of Pb films. Tsinghua University Press and Springer-Verlag Berlin Heidelberg, 2010 Van Hove singularity nationallicence angle-resolved photoemission spectroscopy (ARPES) nationallicence scanning tunneling spectroscopy (STS) nationallicence Pb film nationallicence Sun Yu Key Laboratory of Atomic and Nanosciences, Department of Physics, Tsinghua University, 100084, Beijing, China aut Souma S. WPI Advanced Institute for Materials Research, Tohoku University, 980-8577, Sendai, Japan aut Li Wen Institute of Physics, The Chinese Academy of Sciences, 100190, Beijing, China aut Sato T. Department of Physics, Tohoku University, 980-8578, Sendai, Japan aut Zhu Xie Key Laboratory of Atomic and Nanosciences, Department of Physics, Tsinghua University, 100084, Beijing, China aut Wang Guang Key Laboratory of Atomic and Nanosciences, Department of Physics, Tsinghua University, 100084, Beijing, China aut Chen Xi Key Laboratory of Atomic and Nanosciences, Department of Physics, Tsinghua University, 100084, Beijing, China aut Ma Xu Institute of Physics, The Chinese Academy of Sciences, 100190, Beijing, China aut Xue Qi Key Laboratory of Atomic and Nanosciences, Department of Physics, Tsinghua University, 100084, Beijing, China aut Jia Jin Key Laboratory of Atomic and Nanosciences, Department of Physics, Tsinghua University, 100084, Beijing, China aut Takahashi T. WPI Advanced Institute for Materials Research, Tohoku University, 980-8577, Sendai, Japan aut Sakurai T. WPI Advanced Institute for Materials Research, Tohoku University, 980-8577, Sendai, Japan aut Nano Research Tsinghua Press 3/11(2010-11-01), 800-806 1998-0124 3:11<800 2010 3 12274 https://doi.org/10.1007/s12274-010-0047-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12274-010-0047-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sun Yu Key Laboratory of Atomic and Nanosciences, Department of Physics, Tsinghua University, 100084, Beijing, China aut NATIONALLICENCE 700 1- Souma S. WPI Advanced Institute for Materials Research, Tohoku University, 980-8577, Sendai, Japan aut NATIONALLICENCE 700 1- Li Wen Institute of Physics, The Chinese Academy of Sciences, 100190, Beijing, China aut NATIONALLICENCE 700 1- Sato T. Department of Physics, Tohoku University, 980-8578, Sendai, Japan aut NATIONALLICENCE 700 1- Zhu Xie Key Laboratory of Atomic and Nanosciences, Department of Physics, Tsinghua University, 100084, Beijing, China aut NATIONALLICENCE 700 1- Wang Guang Key Laboratory of Atomic and Nanosciences, Department of Physics, Tsinghua University, 100084, Beijing, China aut NATIONALLICENCE 700 1- Chen Xi Key Laboratory of Atomic and Nanosciences, Department of Physics, Tsinghua University, 100084, Beijing, China aut NATIONALLICENCE 700 1- Ma Xu Institute of Physics, The Chinese Academy of Sciences, 100190, Beijing, China aut NATIONALLICENCE 700 1- Xue Qi Key Laboratory of Atomic and Nanosciences, Department of Physics, Tsinghua University, 100084, Beijing, China aut NATIONALLICENCE 700 1- Jia Jin Key Laboratory of Atomic and Nanosciences, Department of Physics, Tsinghua University, 100084, Beijing, China aut NATIONALLICENCE 700 1- Takahashi T. WPI Advanced Institute for Materials Research, Tohoku University, 980-8577, Sendai, Japan aut NATIONALLICENCE 700 1- Sakurai T. WPI Advanced Institute for Materials Research, Tohoku University, 980-8577, Sendai, Japan aut NATIONALLICENCE 773 0- Nano Research Tsinghua Press 3/11(2010-11-01), 800-806 1998-0124 3:11<800 2010 3 12274 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer