Electrochemical Control of the Ultrafast Lattice Response of a Layered Semimetal.

Autor: de Quesada FA; Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA.; Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA., Muscher PK; Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA.; Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA., Krakovsky ES; Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA.; Computational Physics Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA., Sood A; Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ, 08544, USA.; Princeton Materials Institute, Princeton University, Princeton, NJ, 08540, USA., Poletayev AD; Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA.; Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA.; Department of Materials, University of Oxford, Oxford, OX1 3PH, UK., Sie EJ; Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA.; Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA., Nyby CM; Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA.; Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA., Irvine SJ; Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA.; Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA., Zajac ME; Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA.; Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA., Luo D; Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA.; Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA., Shen X; SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA., Hoffmann MC; SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA., Kramer PL; SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA., England RJ; SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA., Reid AH; SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA., Weathersby SP; SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA., Dresselhaus-Marais LE; Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA.; Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA.; Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA., Rehn DA; Computational Physics Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA., Chueh WC; Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA.; Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA., Lindenberg AM; Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA.; Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA.; Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA.
Jazyk: angličtina
Zdroj: Advanced science (Weinheim, Baden-Wurttemberg, Germany) [Adv Sci (Weinh)] 2024 Dec 16, pp. e2411344. Date of Electronic Publication: 2024 Dec 16.
DOI: 10.1002/advs.202411344
Abstrakt: The unique layer-stacking in two-dimensional (2D) van der Waals materials facilitates the formation of nearly degenerate phases of matter and opens novel routes for the design of low-power, reconfigurable functional materials. Electrochemical ion intercalation between stacked layers offers a promising approach to stabilize bulk metastable phases and to explore the effects of extreme carrier doping and strain. However, in situ characterization methods to study the structural evolution and dynamical functional properties of these intercalated materials remains limited. Here a novel experimental platform is presented capable of simultaneously performing electrochemical lithium-ion intercalation and multimodal ultrafast characterization of the lattice using both electron diffraction and nonlinear optical techniques. Using the layered semimetal WTe 2  as a model system, the interlayer shear phonon mode that modulates stacking between 2Dlayers is probed, showing that small amounts of lithiation enhance the amplitude and lifetime of the phonon, contrary to expectations. This results from the dynamically fluctuating and anharmonic structure between nearly degenerate phases at room temperature, which can be stabilized by electronic carriers accompanying the inserted lithium ions. At high lithiation, the T d ' structure emerges and quenches the phonon response. This work defines new approaches for using electrochemistry to engineer the dynamic structure of 2D materials.
(© 2024 The Author(s). Advanced Science published by Wiley‐VCH GmbH.)
Databáze: MEDLINE
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