Charge Density Wave Order and Electronic Phase Transitions in a Dilute d‐Band Semiconductor
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Oct 27, 2023
- Source ID
- 10.1002/adma.202303283
Entities
People
- Abhay N. Pasupathy
- Boyang Zhao
- Brent C Melot
- Bryan C Chakoumakos
- Eric Seewald
- Gemma Goh
- Guodong Ren
- Gwan Yeong Jung
- Han Wang
- Huandong Chen
- Jayakanth Ravichandran
- Jiang Luo
- Jiangbin Wu
- Jiun‐haw Chu
- Josh Mutch
- Mythili Surendran
- Nan Wang
- Rohan Mishra
- Sanae Ohtomo
- Sara Shabani
- Shantanu Singh
- Shanyuan Niu
- Simon J. Teat
Organizations
- Army Research Office
- Columbia University
- David and Lucile Packard Foundation
- Lawrence Berkeley National Laboratory
- National Science Foundation
- Oak Ridge National Laboratory
- United States Department of Energy
- University of Southern California
- University of Washington
- Washington University in St. Louis