Three-dimensional ultrafast charge-density-wave dynamics in CuTe

Nguyen Nhat Quyen; Wen-Yen Tzeng; Chih-En Hsu; I-An Lin; Wan-Hsin Chen; Hao-Hsiang Jia; Sheng-Chiao Wang; Cheng-En Liu; Yu-Sheng Chen; Wei-Liang Chen; Ta-Lei Chou; I-Ta Wang; Chia-Nung Kuo; Chun-Liang Lin; Chien-Te Wu; Ping-Hui Lin; Shih-Chang Weng; Cheng-Maw Cheng; Chang-Yang Kuo; Chien-Ming Tu; Ming-Wen Chu; Yu-Ming Chang; Chin Shan Lue; Hung-Chung Hsueh; Chih-Wei Luo

doi:10.1038/s41467-024-46615-y

Three-dimensional ultrafast charge-density-wave dynamics in CuTe

Nat Commun. 2024 Mar 16;15(1):2386. doi: 10.1038/s41467-024-46615-y.

Authors

Nguyen Nhat Quyen¹, Wen-Yen Tzeng², Chih-En Hsu³, I-An Lin³, Wan-Hsin Chen¹, Hao-Hsiang Jia⁴, Sheng-Chiao Wang¹, Cheng-En Liu¹, Yu-Sheng Chen⁴, Wei-Liang Chen⁵, Ta-Lei Chou⁵, I-Ta Wang⁵, Chia-Nung Kuo⁶, Chun-Liang Lin¹, Chien-Te Wu^{1

7}, Ping-Hui Lin⁴, Shih-Chang Weng⁴, Cheng-Maw Cheng⁴, Chang-Yang Kuo^{1

4}, Chien-Ming Tu^{1

8

9}, Ming-Wen Chu^{5

10}, Yu-Ming Chang^{5

10}, Chin Shan Lue^{11

12}, Hung-Chung Hsueh¹³, Chih-Wei Luo^{14

15

16

17

18}

Affiliations

¹ Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan.
² Department of Electronic Engineering, National Formosa University, Yunlin, 632, Taiwan.
³ Department of Physics, Tamkang University, New Taipei City, 251301, Taiwan.
⁴ National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan.
⁵ Center for Condensed Matter Sciences, National Taiwan University, Taipei, 10617, Taiwan.
⁶ Department of Physics, National Cheng Kung University, Tainan, 70101, Taiwan.
⁷ Physics Division, National Center for Theoretical Sciences, Taipei, Taiwan.
⁸ Undergraduate Degree Program of Systems Engineering and Technology, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan.
⁹ Chung Cheng Institute of Technology, National Defense University, Taoyuan, 335009, Taiwan.
¹⁰ Center of Atomic Initiative for New Materials (AI-MAT), National Taiwan University, Taipei, 10617, Taiwan.
¹¹ Department of Physics, National Cheng Kung University, Tainan, 70101, Taiwan. [email protected].
¹² Taiwan Consortium of Emergent Crystalline Materials (TCECM), National Science and Technology Council, Taipei, 10601, Taiwan. [email protected].
¹³ Department of Physics, Tamkang University, New Taipei City, 251301, Taiwan. [email protected].
¹⁴ Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan. [email protected].
¹⁵ National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan. [email protected].
¹⁶ Taiwan Consortium of Emergent Crystalline Materials (TCECM), National Science and Technology Council, Taipei, 10601, Taiwan. [email protected].
¹⁷ Institute of Physics and Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan. [email protected].
¹⁸ Department of Physics, University of Washington, Seattle, Washington, 98195, USA. [email protected].

Abstract

Charge density waves (CDWs) involved with electronic and phononic subsystems simultaneously are a common quantum state in solid-state physics, especially in low-dimensional materials. However, CDW phase dynamics in various dimensions are yet to be studied, and their phase transition mechanism is currently moot. Here we show that using the distinct temperature evolution of orientation-dependent ultrafast electron and phonon dynamics, different dimensional CDW phases are verified in CuTe. When the temperature decreases, the shrinking of c-axis length accompanied with the appearance of interchain and interlayer interactions causes the quantum fluctuations (QF) of the CDW phase until 220 K. At T < 220 K, the CDWs on the different ab-planes are finally locked with each other in anti-phase to form a CDW phase along the c-axis. This study shows the dimension evolution of CDW phases in one CDW system and their stabilized mechanisms in different temperature regimes.

Abstract

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