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Time-domain Identification of Distinct Mechanisms for Competing Charge Density Waves in a Rare-earth Tritelluride by Su, Yifan; Lv, B. Q.; Zong, Alfred; Müller, Aaron; Chattopadhyay, Sambuddha; Dolgirev, Pavel E.; Singh, Anisha G.; Straquadine, Joshua A. W.; Choi, Dongsung; Azoury, Doron; Mogi, Masataka; Fisher, Ian R.; Demler, Eugene; Gedik, Nuh is a scholarly article available to read on EtoBox.

What is Time-domain Identification of Distinct Mechanisms for Competing Charge Density Waves in a Rare-earth Tritelluride about?

Understanding the origin of phase transitions and the interactions between distinct phases remains a central task in condensed matter physics. Charge density wave (CDW) systems provide an ideal platform for investigating these phenomena. While the dominant CDW phases in many materials can be explained through Fermi surface nesting or electron-phonon interactions, certain CDW phase transitions remain poorly understood, challenging conventional paradigms. One notable example is rare-earth tritelluride ErTe3, which hosts two competing CDW orders. While the dominant CDW phase fits within the electron-phonon coupling framework, the formation mechanism of the subdominant CDW remains enigmatic. In this study, we combine time-and-angle-resolved photoemission spectroscopy (trARPES) with time-dependent Ginzburg-Landau (TDGL) theory to establish a time-domain approach for probing phase transitions in solid-state systems. By analyzing the distinct recovery dynamics of the two CDW orders in ErTe3 following light excitation, we reveal a novel nucleation-like growth mechanism that likely drives the secondary CDW phase transition. This work not only uncovers a previously unknown CDW formation mech

Author

Su, Yifan; Lv, B. Q.; Zong, Alfred; Müller, Aaron; Chattopadhyay, Sambuddha; Dolgirev, Pavel E.; Singh, Anisha G.; Straquadine, Joshua A. W.; Choi, Dongsung; Azoury, Doron; Mogi, Masataka; Fisher, Ian R.; Demler, Eugene; Gedik, Nuh

Published

2025

Language

EN