Excitonic Effects in Two-Dimensional Materials

Excitonic Effects in Two-Dimensional Materials

ORAL · MAR-T27 · ID: 3092063

Presentations

Observation of a many-body excitonic complex in WSe2 beyond the oxciton

ORAL

March 20, 2025, 6:00 PM – March 20, 2025, 6:12 PM
Presenters
- Alain Dijkstra
 
 Walter Schottky Institute TU Munich
Authors
- Alain Dijkstra
 
 Walter Schottky Institute TU Munich
- Amine Ben Mhenni
 
 Walter Schottky Institute, TU Munich
- Dinh Van Tuan
 
 University of Rochester
- Nathan P Wilson
 
 Walter Schottky Institute, Technical University of Munich
- Hanan Dery
 
 University of Rochester
- Jonathan J Finley
 
 Walter Schottky Institute, TU Munich
View abstract →
Exciton trapping in periodic potentials in monolayer transition metal dichalcogenide crystals as defined by in-plane electric fields

ORAL

March 20, 2025, 6:12 PM – March 20, 2025, 6:24 PM
Presenters
- Xueqi Chen
  
  Stanford University
Authors
- Xueqi Chen
  
  Stanford University
- Jierong Wang
  
  Stanford University, Nanjing Univ
- Jenny Hu
  
  Stanford University
- Kenji Watanabe
  
  National Institute for Materials Science, NIMS, Research Center for Functional Materials, National Institute for Materials Science, Research Center for Electronic and Optical Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan, Research Center for Functional Materials, National Institute of Material Science, Tsukuba, Japan, National Institute of Materials Science, Advanced Materials Laboratory, National Institute for Materials Science
- Takashi Taniguchi
  
  National Institute for Materials Science, International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan, International Center for Materials Nanoarchitectonics, National Institute of Material Science, Tsukuba, Japan, Advanced Materials Laboratory, National Institute for Materials Science
- Thibault Chervy
  
  NTT Research, Inc.
- Tony F Heinz
  
  Stanford University
View abstract →
Observation of gate-tunable excitonic emissions in suspended MoS2

ORAL

March 20, 2025, 6:24 PM – March 20, 2025, 6:36 PM
Presenters
- Thy Doan Mai Le
 
 Georgetown University
Authors
- Thy Doan Mai Le
 
 Georgetown University
- Shehan de Silva
 
 Georgetown University
- Yijing Liu
 
 Georgetown University
- Ibrahim Boulares
 
 US Army Res Dev & Eng Command
- Charles C Rong
 
 US Army Res Dev & Eng Command
- Edward Richard Van Keuren
 
 Georgetown University
- Sina Najmaei
 
 US Army Res Dev & Eng Command
- Paola Barbara
 
 Georgetown University
View abstract →
Electrically Tunable Quantum Control for Interlayer Exciton Superlattices with Nanoelectrodes

ORAL

March 20, 2025, 6:36 PM – March 20, 2025, 6:48 PM
Presenters
- Qitong Li
  
  Stanford University
Authors
- Qitong Li
  
  Stanford University
- Helen Yao
  
  Stanford University
- Xueqi Chen
  
  Stanford University
- Jiuru Chen
  
  Peking University, Stanford University
- Tony F Heinz
  
  Stanford University
View abstract →
Optical signatures of interlayer electron coherence in a bilayer semiconductor

ORAL

March 20, 2025, 6:48 PM – March 20, 2025, 7:00 PM

Publication: X. Liu, N. Leisgang, P. Dolgirev, A. Zibrov, J. Sung, J. Wang, T. Taniguchi, K. Watanabe, V. Walther, H. Park, et al., Optical signatures of interlayer electron coherence in a bilayer semiconductor, arXiv: 2409.08329 (2024).
Presenters
- Xiaoling Liu
  
  Harvard University
Authors
- Xiaoling Liu
  
  Harvard University
- Nadine Leisgang
  
  Harvard University
- Pavel Dolgirev
  
  Harvard University
- Alexander Zibrov
  
  Harvard University
- Jiho Sung
  
  Harvard University
- Jue Wang
  
  Harvard University
- Valentin Walther
  
  Harvard - Smithsonian Center for Astrophysics, Purdue University
- Hongkun Park
  
  Harvard University
- Eugene Demler
  
  ETH Zurich
- Philip Kim
  
  Harvard University
- Mikhail D Lukin
  
  Harvard University
View abstract →
Stark Effects of Rydberg Excitons in a Monolayer WSe2 P-N Junction

ORAL

March 20, 2025, 7:00 PM – March 20, 2025, 7:12 PM

Publication: Stark Effects of Rydberg Excitons in a Monolayer WSe2 P–N Junction, Nano Lett. 2024, 24, 16, 4843–4848
Presenters
- Lei Ma
 
 Rensselaer Polytechnic Institute, Carnegie Mellon University / Rensselaer Polytechnic Institute
Authors
- Lei Ma
 
 Rensselaer Polytechnic Institute, Carnegie Mellon University / Rensselaer Polytechnic Institute
- Zhen Lian
 
 Rensselaer Polytechnic Institute
- Yun-Mei Li
 
 Department of Physics, School of Physical Science and Technology, Xiamen University
- Li Yan
 
 Rensselaer Polytechnic Institute, Carnegie Mellon University / Rensselaer Polytechnic Institute
- Dongxue Chen
 
 Rensselaer Polytechnic Institute
- Takashi Taniguchi
 
 National Institute for Materials Science, International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan, International Center for Materials Nanoarchitectonics, National Institute of Material Science, Tsukuba, Japan, Advanced Materials Laboratory, National Institute for Materials Science
- Kenji Watanabe
 
 National Institute for Materials Science, NIMS, Research Center for Functional Materials, National Institute for Materials Science, Research Center for Electronic and Optical Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan, Research Center for Functional Materials, National Institute of Material Science, Tsukuba, Japan, National Institute of Materials Science, Advanced Materials Laboratory, National Institute for Materials Science
- Chuanwei Zhang
 
 Washington University, St. Louis
- Sufei Shi
 
 Rensselaer Polytechnic Institute, Carnegie Mellon University
View abstract →
Hybridization of intralayer excitons in transition-metal dichalcogenide heterostructures with excited interlayer excitons

ORAL

March 20, 2025, 7:12 PM – March 20, 2025, 7:24 PM
Presenters
- Helen Yao
  
  Stanford University
Authors
- Helen Yao
  
  Stanford University
- Jierong Wang
  
  Stanford University, Nanjing Univ
- Emily Yan Chen
  
  Stanford University
- Jonah B Haber
  
  Stanford University
- Ouri Karni
  
  Stanford University
- Kenji Watanabe
  
  National Institute for Materials Science, NIMS, Research Center for Functional Materials, National Institute for Materials Science, Research Center for Electronic and Optical Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan, Research Center for Functional Materials, National Institute of Material Science, Tsukuba, Japan, National Institute of Materials Science, Advanced Materials Laboratory, National Institute for Materials Science
- Takashi Taniguchi
  
  National Institute for Materials Science, International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan, International Center for Materials Nanoarchitectonics, National Institute of Material Science, Tsukuba, Japan, Advanced Materials Laboratory, National Institute for Materials Science
- Felipe H da Jornada
  
  Stanford University
- Tony F Heinz
  
  Stanford University
View abstract →
Temperature-Dependent Excitonic Behavior of Mechanically Exfoliated 2D Tetracene Crystals

ORAL

March 20, 2025, 7:24 PM – March 20, 2025, 7:36 PM

Publication: 1. Kim, D.; Lee, S.; Park, J.; Lee, J.; Choi, H. C.; Kim, K.; Ryu, S. In-plane and out-of-plane excitonic coupling in 2D molecular crystals. Nature communications 2023, 14 (1), 2736. 2. Koo, S.; Park, I.; Watanabe, K.; Taniguchi, T.; Shim, J. H.; Ryu, S. Extraordinary photostability and davydov splitting in BN-sandwiched single-layer tetracene molecular crystals. Nano Letters 2021, 21 (15), 6600-6608. 3. Kasha, M. Energy transfer mechanisms and the molecular exciton model for molecular aggregates. Radiation research 1963, 20 (1), 55-70. 4. Burdett, J. J.; Gosztola, D.; Bardeen, C. J. The dependence of singlet exciton relaxation on excitation density and temperature in polycrystalline tetracene thin films: kinetic evidence for a dark intermediate state and implications for singlet fission. J Chem Phys 2011, 135 (21), 214508. 5. Hestand, N. J.; Spano, F. C. Expanded theory of H-and J-molecular aggregates: the effects of vibronic coupling and intermolecular charge transfer. Chemical reviews 2018, 118 (15), 7069-7163.
Presenters
- SangJin Han
 
 Postech
Authors
- SangJin Han
 
 Postech
View abstract →
Electrically tunable ultrafast dynamics and interactions of hybrid excitons in semiconducting bilayers

ORAL

March 20, 2025, 7:36 PM – March 20, 2025, 7:48 PM

Publication: Planned paper title: Electrically tunable ultrafast dynamics and interactions of hybrid excitons in semiconducting bilayers
Presenters
- Edoardo Lopriore
  
  Ecole Polytechnique Federale de Lausanne
Authors
- Edoardo Lopriore
  
  Ecole Polytechnique Federale de Lausanne
- Charalambos Louca
  
  Politecnico di Milano
- Armando Genco
  
  Politecnico di Milano
- Irantzu Landa Garcia
  
  Politecnico di Milano
- Daniel Erkensten
  
  Philipps-Universität Marburg
- Charles Sayers
  
  Politecnico di Milano
- Samuel Brem
  
  Philipps-Universität Marburg
- Raul Perea-Causin
  
  Stockholm University
- Kenji Watanabe
  
  National Institute for Materials Science, NIMS, Research Center for Functional Materials, National Institute for Materials Science, Research Center for Electronic and Optical Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan, Research Center for Functional Materials, National Institute of Material Science, Tsukuba, Japan, National Institute of Materials Science, Advanced Materials Laboratory, National Institute for Materials Science
- Takashi Taniguchi
  
  National Institute for Materials Science, International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan, International Center for Materials Nanoarchitectonics, National Institute of Material Science, Tsukuba, Japan, Advanced Materials Laboratory, National Institute for Materials Science
- Christoph Gadermaier
  
  Politecnico di Milano
- Ermin Malic
  
  University of Marburg
- Giulio Cerullo
  
  Politecnico di Milano
- Stefano Dal Conte
  
  Politecnico di Milano
- Andras Kis
  
  Ecole Polytechnique Federale de Lausanne, École Polytechnique Fédérale de Lausanne
View abstract →
2D Material Fabrication Strategies for The Study of Doubly Charged Exciton Complexes

ORAL

March 20, 2025, 7:48 PM – March 20, 2025, 8:00 PM

Publication: Manuscript in preparation
Presenters
- Daniel Vaz
  
  University of Pittsburgh
Authors
- Daniel Vaz
  
  University of Pittsburgh
View abstract →
Definitive Evidence of Excitonic Charged Bosons in a bilayer system

ORAL

March 20, 2025, 8:00 PM – March 20, 2025, 8:12 PM

Publication: [1] Barbone, Matteo, et al. Nature Communications 9.1 (2018): 3721. [2] Zheng Sun, et al., Nano letters 21 7669 (2021).
Presenters
- Qiaochu Wan
 
 University of Pittsburgh
Authors
- Qiaochu Wan
 
 University of Pittsburgh
- Daniel Vaz
 
 University of Pittsburgh
- Li Xiang
 
 Florida State University
- Anshul Ramavath
 
 University of Pittsburgh
- Anshul Ramavath
 
 University of Pittsburgh
- Juntong Ye
 
 University of Pittsburgh
- Jonathan C Beaumariage
 
 University of Pittsburgh
- Kenji Watanabe
 
 National Institute for Materials Science, NIMS, Research Center for Functional Materials, National Institute for Materials Science, Research Center for Electronic and Optical Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan, Research Center for Functional Materials, National Institute of Material Science, Tsukuba, Japan, National Institute of Materials Science, Advanced Materials Laboratory, National Institute for Materials Science
- Takashi Taniguchi
 
 National Institute for Materials Science, International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan, International Center for Materials Nanoarchitectonics, National Institute of Material Science, Tsukuba, Japan, Advanced Materials Laboratory, National Institute for Materials Science
- Zheng Sun
 
 East China Normal University
- Dmitry Smirnov
 
 National High Magnetic Field Laboratory
- Nathan Youngblood
 
 University of Pittsburgh
- Igor V Bondarev
 
 North Carolina Central University
- David W Snoke
 
 University of Pittsburgh
View abstract →
Magnetic field effect on quaternion excitonic complexes in bilayer structures near metals

ORAL

March 20, 2025, 8:12 PM – March 20, 2025, 8:24 PM

Publication: manuscript in preparation
Presenters
- Igor V Bondarev
  
  North Carolina Central University
Authors
- Igor V Bondarev
  
  North Carolina Central University
- Qiaochu Wan
  
  University of Pittsburgh
- David W Snoke
  
  University of Pittsburgh
View abstract →
Spatial confinement of excitons in van-der-Waals monolayers induced by electric fields from an adjacent ferroelectric material

ORAL

March 20, 2025, 8:24 PM – March 20, 2025, 8:36 PM
Presenters
- Jierong Wang
  
  Stanford University, Nanjing Univ
Authors
- Jierong Wang
  
  Stanford University, Nanjing Univ
- Jiuru Chen
  
  Stanford University
- Jenny Hu
  
  Stanford University
- Kenji Watanabe
  
  National Institute for Materials Science, NIMS, Research Center for Functional Materials, National Institute for Materials Science, Research Center for Electronic and Optical Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan, Research Center for Functional Materials, National Institute of Material Science, Tsukuba, Japan, National Institute of Materials Science, Advanced Materials Laboratory, National Institute for Materials Science
- Takashi Taniguchi
  
  National Institute for Materials Science, International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan, International Center for Materials Nanoarchitectonics, National Institute of Material Science, Tsukuba, Japan, Advanced Materials Laboratory, National Institute for Materials Science
- Tony F Heinz
  
  Stanford University
View abstract →
Abstract Withdrawn

ORAL Withdrawn

March 20, 2025, 8:36 PM – March 20, 2025, 8:48 PM

View abstract →
Layer-dependent exciton formation in two-dimensional crystals of perylene derivatives

ORAL

March 20, 2025, 8:48 PM – March 20, 2025, 9:00 PM

Publication: [1] Engels, B.; Engel, V. The dimer-approach to characterize opto-electronic properties of and exciton trapping and diffusion in organic semiconductor aggregates and crystals. Phys. Chem. Chem. Phys. 2017, 19 (20), 12604-12619. [2] Kim, D.; Lee, S.; Park, J.; Lee, J.; Choi, H. C.; Kim, K.; Ryu, S. In-plane and out-of-plane excitonic coupling in 2D molecular crystals. Nat. Commun. 2023, 14 (1), 2736.
Presenters
- Seung Il Ahn
 
 Pohang University of Science and Technology
Authors
- Seung Il Ahn
 
 Pohang University of Science and Technology
- Sunmin Ryu
 
 Pohang Univ of Sci & Tech
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