Charge Density Wave Order and Electronic Phase Transitions in a Dilute d-Band Semiconductor

Huandong Chen; Boyang Zhao; Josh Mutch; Gwan Yeong Jung; Guodong Ren; Sara Shabani; Eric Seewald; Shanyuan Niu; Jiangbin Wu; Nan Wang; Mythili Surendran; Shantanu Singh; Jiang Luo; Sanae Ohtomo; Gemma Goh; Bryan C Chakoumakos; Simon J Teat; Brent Melot; Han Wang; Abhay N Pasupathy; Rohan Mishra; Jiun-Haw Chu; Jayakanth Ravichandran

doi:10.1002/adma.202303283

Charge Density Wave Order and Electronic Phase Transitions in a Dilute d-Band Semiconductor

Adv Mater. 2023 Dec;35(49):e2303283. doi: 10.1002/adma.202303283. Epub 2023 Oct 27.

Authors

Huandong Chen¹, Boyang Zhao¹, Josh Mutch², Gwan Yeong Jung³, Guodong Ren⁴, Sara Shabani⁵, Eric Seewald⁵, Shanyuan Niu¹, Jiangbin Wu⁶, Nan Wang¹, Mythili Surendran^{1

7}, Shantanu Singh¹, Jiang Luo⁸, Sanae Ohtomo², Gemma Goh⁹, Bryan C Chakoumakos¹⁰, Simon J Teat¹¹, Brent Melot^{1

9}, Han Wang⁶, Abhay N Pasupathy⁵, Rohan Mishra^{3

4}, Jiun-Haw Chu², Jayakanth Ravichandran^{1

6

7}

Affiliations

¹ Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA, 90089, USA.
² Department of Physics, University of Washington, Seattle, WA, 98195, USA.
³ Department of Mechanical Engineering and Materials Science, Washington University in St. Louis, St. Louis, MO, 63130, USA.
⁴ Institute of Materials Science and Engineering, Washington University in St. Louis, St. Louis, MO, 63130, USA.
⁵ Department of Physics, Columbia University, New York, NY, 10027, USA.
⁶ Ming Hsieh Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, CA, 90089, USA.
⁷ Core Center for Excellence in Nano Imaging, University of Southern California, Los Angeles, CA, 90089, USA.
⁸ Department of Chemistry, Washington University in St. Louis, St. Louis, MO, 63130, USA.
⁹ Department of Chemistry, University of Southern California, Los Angeles, CA, 90089, USA.
¹⁰ Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA.
¹¹ Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.

PMID: 37540897
DOI: 10.1002/adma.202303283

Abstract

As one of the most fundamental physical phenomena, charge density wave (CDW) order predominantly occurs in metallic systems such as quasi-1D metals, doped cuprates, and transition metal dichalcogenides, where it is well understood in terms of Fermi surface nesting and electron-phonon coupling mechanisms. On the other hand, CDW phenomena in semiconducting systems, particularly at the low carrier concentration limit, are less common and feature intricate characteristics, which often necessitate the exploration of novel mechanisms, such as electron-hole coupling or Mott physics, to explain. In this study, an approach combining electrical transport, synchrotron X-ray diffraction, and density-functional theory calculations is used to investigate CDW order and a series of hysteretic phase transitions in a dilute d-band semiconductor, BaTiS₃ . These experimental and theoretical findings suggest that the observed CDW order and phase transitions in BaTiS₃ may be attributed to both electron-phonon coupling and non-negligible electron-electron interactions in the system. This work highlights BaTiS₃ as a unique platform to explore CDW physics and novel electronic phases in the dilute filling limit and opens new opportunities for developing novel electronic devices.

Keywords: charge density wave; phase transitions; quasi-1D chalcogenide; semiconductors.

Abstract

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