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Motivated by the recent experimental observation of the topological Andersoninsulator in disordered atomic wires based on the Su-Schrieffer-Heeger (SSH)model, we study disorder effects on a dimerized Kitaev superconductor chainwhich is regarded as the superconductor version of the SSH model. By computingthe real-space winding number and the zero-bias differential conductance, weanalyze the topological phase transitions occurring in a dimerized Kitaevsuperconductor chain with disorder. It is found that disorder can induce atopologically nontrivial superconductor phase hosting Majorana zero modes(MZMs). We can regulate the appearance of disorder-induced MZMs by adjustingthe dimerization parameter. Finally, we use the self-consistent Bornapproximation method to verify the numerical results.

Disorder-induced Majorana zero modes in a dimerized Kitaev superconductor chain