  We build a Cu-MoTe2-Cu device model and use first-principles density
functional theory to study the transport properties of single-layer Td-MoTe2.
We obtained the effect of strain on the energy band structure, transport
properties, and photocurrent. The strain-induced photocurrent shows an
anisotropy that reflects the modulation of the energy bands, including the Weyl
point, by strain. The photocurrent can be suppressed to almost zero when the
strain is applied along the vacuum direction. In contrast, the photocurrent can
be significantly increased when the strain is applied along the transport
direction. The transport properties and magnitude of the photocurrent in the
MoTe2-based device can be effectively modulated by adjusting the strength and
direction of the strain.
