Correlated terahertz phonon–ion interactions control ion conduction in a solid electrolyte

Materials Horizons 2026 Open access

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Authors: Kim H. Pham, Kiarash Gordiz, Natan A. Spear, Amy K. Lin, Jonathan M Michelsen, Hanzhe Liu, Daniele Vivona, Geoffrey A. Blake, Yang Shao‐Horn, Asegun Henry, Kimberly A. See, Scott Cushing
DOI: 10.1039/d5mh01990g
Cited by: 2
References: 102

Abstract

terahertz (THz) illumination leads to a ten-fold decrease in the differential impedance compared to the excitation of acoustic and optical phonons. Additionally, we differentiate the ultrafast responses of LLTO due to ultrafast heating and THz-range vibrations using laser-driven spectroscopy (LUIS), finding a unique long-lived response for the THz-range excitation. These findings provide new insights into coupled ion migration mechanisms, indicating the important role of THz-range coupled phonon-ion hopping modes in enabling fast ion conduction at room temperature.

Fields of Study & Subjects

Advanced Thermoelectric Materials and Devices Spectroscopy and Quantum Chemical Studies Thermal Expansion and Ionic Conductivity

Publication details

Journal / source
Materials Horizons
Publisher
Royal Society of Chemistry (RSC)
Volume
13
Issue
7
Pages
3355–3375
Publication date
1 January 2026
Language
EN