Abstract:The vibrational, electronic and Raman properties of monolayer Ti 2 C under planar symmetrical strain excited by two commonly used laser lines (532 and 633 nm) are investigated by first-principles calculations. By analyzing the phonon spectrum, the stability of strained monolayer Ti 2 C is obtained. The strained Ti 2 C is found to have the same point group symmetry and thereby the same Raman-active modes as unstrained Ti 2 C, but their Raman peaks exhibit notable red (blue) shift characteristic with symmetrical… Show more
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