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Electronic Structure of Few-Layer Black Phosphorus from µ-ARPES.
Margot, Florian; Lisi, Simone; Cucchi, Irène; Cappelli, Edoardo; Hunter, Andrew; Gutiérrez-Lezama, Ignacio; Ma, KeYuan; von Rohr, Fabian; Berthod, Christophe; Petocchi, Francesco; Poncé, Samuel; Marzari, Nicola; Gibertini, Marco; Tamai, Anna; Morpurgo, Alberto F; Baumberger, Felix.
Afiliación
  • Margot F; Department of Quantum Matter Physics, University of Geneva, 24 quai Ernest Ansermet, CH-1211 Geneva, Switzerland.
  • Lisi S; Department of Quantum Matter Physics, University of Geneva, 24 quai Ernest Ansermet, CH-1211 Geneva, Switzerland.
  • Cucchi I; Department of Quantum Matter Physics, University of Geneva, 24 quai Ernest Ansermet, CH-1211 Geneva, Switzerland.
  • Cappelli E; Department of Quantum Matter Physics, University of Geneva, 24 quai Ernest Ansermet, CH-1211 Geneva, Switzerland.
  • Hunter A; Department of Quantum Matter Physics, University of Geneva, 24 quai Ernest Ansermet, CH-1211 Geneva, Switzerland.
  • Gutiérrez-Lezama I; Department of Quantum Matter Physics, University of Geneva, 24 quai Ernest Ansermet, CH-1211 Geneva, Switzerland.
  • Ma K; Group of Applied Physics, University of Geneva, 24 quai Ernest Ansermet, CH-1211 Geneva, Switzerland.
  • von Rohr F; Department of Chemistry, University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland.
  • Berthod C; Department of Quantum Matter Physics, University of Geneva, 24 quai Ernest Ansermet, CH-1211 Geneva, Switzerland.
  • Petocchi F; Department of Quantum Matter Physics, University of Geneva, 24 quai Ernest Ansermet, CH-1211 Geneva, Switzerland.
  • Poncé S; Department of Quantum Matter Physics, University of Geneva, 24 quai Ernest Ansermet, CH-1211 Geneva, Switzerland.
  • Marzari N; Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, BE-1348 Louvain-la-Neuve, Belgium.
  • Gibertini M; Laboratory of Theory and Simulation of Materials, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland.
  • Tamai A; Dipartimento di Scienze Fisiche, Informatiche e Matematiche, University of Modena and Reggio Emilia, 41125 Modena, Italy.
  • Morpurgo AF; Department of Quantum Matter Physics, University of Geneva, 24 quai Ernest Ansermet, CH-1211 Geneva, Switzerland.
  • Baumberger F; Department of Quantum Matter Physics, University of Geneva, 24 quai Ernest Ansermet, CH-1211 Geneva, Switzerland.
Nano Lett ; 23(14): 6433-6439, 2023 Jul 26.
Article en En | MEDLINE | ID: mdl-37460109
Black phosphorus (BP) stands out among two-dimensional (2D) semiconductors because of its high mobility and thickness dependent direct band gap. However, the quasiparticle band structure of ultrathin BP has remained inaccessible to experiment thus far. Here we use a recently developed laser-based microfocus angle resolved photoemission (µ-ARPES) system to establish the electronic structure of 2-9 layer BP from experiment. Our measurements unveil ladders of anisotropic, quantized subbands at energies that deviate from the scaling observed in conventional semiconductor quantum wells. We quantify the anisotropy of the effective masses and determine universal tight-binding parameters, which provide an accurate description of the electronic structure for all thicknesses.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nano Lett Año: 2023 Tipo del documento: Article País de afiliación: Suiza Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nano Lett Año: 2023 Tipo del documento: Article País de afiliación: Suiza Pais de publicación: Estados Unidos