@article{oai:kanazawa-u.repo.nii.ac.jp:00010986, author = {石井, 史之 and Sawada, Keisuke and Ishii, Fumiyuki}, issue = {6}, journal = {Journal of Physics Condensed Matter}, month = {Jan}, note = {We have performed noncollinear first-principles density-functional calculations of carrier-doped perovskite manganites La1-xSr xMnO3 (0.0≤x≤1.0). In the calculated magnetic phase diagram (T = 0) within the collinear magnetic configurations, ferromagnetic and several antiferromagnetic configurations successively appeared as a ground state with increasing x. The calculated total energies of the ferromagnetic and A-type antiferromagnetic phases are almost degenerate around the phase boundary, x = 0.5. We found that the noncollinear magnetic configurations are stable in a wide range of carrier concentrations 0.3≤x≤0.6. We discuss the effect of lattice distortions on the stability of the noncollinear magnetic phase. © 2009 IOP Publishing Ltd., 金沢大学理工研究域数物科学系}, title = {Carrier-induced noncollinear magnetism in perovskite manganites by first-principles calculations}, volume = {21}, year = {2009} }