Strain tuning MoO3 vibrational and electronic properties
Sergio Puebla, Hao Li, Onur Çakıroğlu, Estrella Sánchez Viso, Carmen Munuera, Roberto D’Agosta, Andrés Castellanos-Gómez
Abstract
Abstract This work investigates the vibrational and electrical properties of molybdenum trioxide (α-MoO 3 ) upon tensile strain applied along different crystal directions. Using a three-point bending setup in combination with Raman spectroscopy, we report measurements of a blueshift of the Raman modes when uniaxial tensile strain is applied along the a - and c -axis to this material. Furthermore, the electrical measurements reveal an increase in resistance with strain applied along both in-plane directions. The findings from the uniaxial strain and Raman spectroscopy measurements are further confirmed by ab-initio calculations. This study provides valuable insights into the mechanical and vibrational properties of α-MoO 3 and its potential use in several applications. This study contributes to the growing body of knowledge on the properties of α-MoO 3 and lays the foundation for further exploration of its potential applications. Given MoO 3 holding the natural hyperbolic phonon polaritons, attracting significant research interest, this study has the potential to arouse the curiosity of the scientific community.