paper

Modulation of electronic and mechanical properties of phosphorene through strain

arXiv:1407.7706 · doi:10.1103/PhysRevB.91.115412

Abstract

We report a first-principles study on the elastic, vibrational, and electronic properties of recently synthesized phosphorene. By calculating Grüneisen parameters, we evaluate the frequency shift of Raman/infrared active modes via symmetric biaxial strain. We also study an inducing semiconductor-metal transition, the gap size, and effective mass of carriers in various strain configurations. Furthermore, we unfold the emergence of a peculiar Dirac-shaped dispersion for specific strain conditions, including the zigzag-oriented tensile strain. The observed linear energy spectrum has distinct velocities corresponding to each of its linear branches and is limited to the direction in the first Brillouin zone.

arXiv comment8 pages, 5 figures

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