Journal article
Anisotropic charge density wave in layered 1T-TiSe2
Physical review materials, v 1(5)
04 Oct 2017
Abstract
We present a three-dimensional study on the anisotropy of the charge density wave (CDW) in 1T-TiSe2, by means of in situ atomically resolved electron microscopy at cryogenic temperatures in both reciprocal and real spaces. Using coherent nanoelectron diffraction, we observed short-range coherence of the in-plane CDW component while the long-range coherence of out-of-plane CDW component remains intact. An in-plane CDW coherence length of similar to 10 nm and an out-of-plane CDW coherence length of 17.5 nm, as a lower bound, were determined. The electron modulation was observed using electron energy-loss spectroscopy and verified by an orbital-projected density of states. Our integrated approach reveals anisotropic CDW domains at the nanoscale, and illustrates electron modulation-induced symmetry breaking of a two-dimensional material in three dimensions, offering an opportunity to study the effect of reduced dimensionality in strongly correlated systems.
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Details
- Title
- Anisotropic charge density wave in layered 1T-TiSe2
- Creators
- Qiao Qiao - Brookhaven National LaboratorySongsong Zhou - University of PennsylvaniaJing Tao - Brookhaven National LaboratoryJin-Cheng Zheng - Xiamen UniversityLijun Wu - Brookhaven National LaboratorySamuel T. Ciocys - Drexel UniversityMaria Iavarone - Temple UniversityDavid J. Srolovitz - University of PennsylvaniaGoran Karapetrov - Drexel UniversityYimei Zhu - Brookhaven National Laboratory
- Publication Details
- Physical review materials, v 1(5)
- Publisher
- Amer Physical Soc
- Number of pages
- 8
- Grant note
- DE-SC0012704 / Materials Science and Engineering Divisions, Office of Basic Energy Sciences of the U.S. Department of Energy; United States Department of Energy (DOE) 11335006 / National Natural Science Foundation of China; National Natural Science Foundation of China (NSFC) DE-SC0012575 / Center for the Computational Design of Functional Layered Materials, an Energy Frontier Research Center - U.S. Department of Energy, Office of Science, Basic Energy Sciences; United States Department of Energy (DOE)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000416584100002
- Scopus ID
- 2-s2.0-85059530918
- Other Identifier
- 991019168325604721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary