Work

Stabilizing the commensurate charge-density wave in 1T-tantalum disulfide at higher temperatures via potassium intercalation

Year: 2019

Type: article

Abstract: The 1T phase of tantalum disulfide (1T-TaS2) possesses a variety of charge-density-wave (CDW) orders, and as a result, it attracts an increasing amount of academic and technological interest. Researchers have devoted tremendous efforts towards understanding the impacts of doping, alloying, intercalation or other triggering agents on its charge density wave orders. In this work, we demonstrate that incorporating potassium chloride (KCl) during chemical vapor deposition (CVD) of TaS2 can control the phase (1T, 2H or metal nanowires) via the intercalation of potassium ions (K+) between TaS2 layers. Finally, we demonstrate that K+ not only impacts the structure during synthesis but also strongly impacts the CDW phase transition as a function of temperature, increasing the nearly commensurate (NCCDW) to commensurate (CCDW) transition to just below room temperature.

Source: Nanoscale

DOI: 10.1039/c8nr09732a

Authors: Rui Zhao, Benjamin Grisafe, Ram Krishna Ghosh, Ke Wang, Suman Datta, Joshua Robinson

Institutions: Pennsylvania State University, University of Notre Dame, Jawaharlal Nehru University

Language: English

Topic: 2D Materials and Applications

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, Department of Science and Technology, Ministry of Science and Technology, India

OpenAlex ID: W2918718014

FWCI: 0.509

Cites: 53

Cited by: 10

Related to: 10