We investigate the ground-state properties of the periodic Anderson model on the square lattice across various band fillings. Employing the infinite projected entangled-pair state (iPEPS) technique, we can determine the magnetic ground states accurately and compare them to mean-field predictions to highlight the effects of quantum fluctuations. At half filling, we analyze the transition between the antiferromagnetic and paramagnetic (Kondo singlet) phases as a function of hybridization and $f$-level energy, finding excellent agreement with existing quantum Monte Carlo studies in the case of hybridization. For $n=1.5$ electrons per site, we identify a correlated antiferromagnetic diagonal stripe phase as the ground state, which competes with its ferromagnetic partner state.

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• Antiferromagnetism
• Stripes
• Heavy-fermion systems
• Square lattice
• Kondo lattice model
• Mean field theory
• Projected entangled pair states