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The structural and electronic properties of graphene leads its chargecarriers to behave like relativistic particles, which is described by aDirac-like Hamiltonian. Since graphene is a monolayer of carbon atoms, thestrain due to elastic deformations will give rise to so-called `pseudomagneticfields (PMF)' in graphene sheet, and that has been realized experimentally instrained graphene sample. Here we propose a realistic strained graphene bilayer(SGB) device to detect the pseudo-magnetoexcitons (PME) in the absence ofexternal magnetic field. The carriers in each graphene layer suffer differentstrong PMFs due to strain engineering, which give rise to Landau quantization.The pseudo-Landau levels (PLLs) of electron-hole pair under inhomogeneous PMFsin SGB are analytically obtained in the absence of Coulomb interactions. Basedon the general analytical optical absorption selection rule for PME, we showthat the optical absorption spectrums can interpret the corresponding formationof Dirac-type PME. We also predict that in the presence of inhomogeneous PMFs,the superfluidity-normal phase transition temperature of PME is greater thanthat under homogeneous PMFs.}

Pseudo-magnetoexcitons in strained graphene bilayers without external magnetic fields