Electronic structure and exchange interaction in the layered perovskite Sr3Mn2O7
Apstrakt
The electronic structure of the Ruddlesden-Popper layered perovskite compound Sr3Mn2O7 is studied from density-functional calculations using the linear muffin-tin orbitals method. An antiferromagnetic, insulating solution is obtained in agreement with the experiments, with a magnetic moment of about 2.52mu(B) for each Mn atom. The magnetic interactions between the Mn atoms, both within the bilayer and between the bilayers, are shown to arise from superexchange. The intrabilayer interaction involves the three-site Mn-O-Mn superexchange much like the case of the well-known CaMnO3, while the interbilayer exchange, mediated via the longer Mn-O-O-Mn superexchange path, is considerably weaker. Consistent with the layered nature of the compound, we find a strong out-of-plane to in-plane band-mass anisotropy for Sr3Mn2O7 (m(z)*/m(x,y)* similar to 10.9 for electrons and similar to4.2 for holes), while for the related compound LaSr2Mn2O7, which is a ferromagnetic metal, we obtain a strong anisot...ropy in the resistivity rho(c)/rho(ab)similar to40 using kinetic transport theory, in qualitative agreement with the experimental value of similar to100.
Izvor:
Physical Review B: Condensed Matter and Materials Physics, 2002, 65, 9
DOI: 10.1103/PhysRevB.65.094402
ISSN: 1098-0121
WoS: 000174547900067
Scopus: 2-s2.0-85038313319
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Meskine, H AU - Popović, Zoran S. AU - Satpathy, Sashi PY - 2002 UR - https://vinar.vin.bg.ac.rs/handle/123456789/2503 AB - The electronic structure of the Ruddlesden-Popper layered perovskite compound Sr3Mn2O7 is studied from density-functional calculations using the linear muffin-tin orbitals method. An antiferromagnetic, insulating solution is obtained in agreement with the experiments, with a magnetic moment of about 2.52mu(B) for each Mn atom. The magnetic interactions between the Mn atoms, both within the bilayer and between the bilayers, are shown to arise from superexchange. The intrabilayer interaction involves the three-site Mn-O-Mn superexchange much like the case of the well-known CaMnO3, while the interbilayer exchange, mediated via the longer Mn-O-O-Mn superexchange path, is considerably weaker. Consistent with the layered nature of the compound, we find a strong out-of-plane to in-plane band-mass anisotropy for Sr3Mn2O7 (m(z)*/m(x,y)* similar to 10.9 for electrons and similar to4.2 for holes), while for the related compound LaSr2Mn2O7, which is a ferromagnetic metal, we obtain a strong anisotropy in the resistivity rho(c)/rho(ab)similar to40 using kinetic transport theory, in qualitative agreement with the experimental value of similar to100. T2 - Physical Review B: Condensed Matter and Materials Physics T1 - Electronic structure and exchange interaction in the layered perovskite Sr3Mn2O7 VL - 65 IS - 9 DO - 10.1103/PhysRevB.65.094402 ER -
@article{ author = "Meskine, H and Popović, Zoran S. and Satpathy, Sashi", year = "2002", abstract = "The electronic structure of the Ruddlesden-Popper layered perovskite compound Sr3Mn2O7 is studied from density-functional calculations using the linear muffin-tin orbitals method. An antiferromagnetic, insulating solution is obtained in agreement with the experiments, with a magnetic moment of about 2.52mu(B) for each Mn atom. The magnetic interactions between the Mn atoms, both within the bilayer and between the bilayers, are shown to arise from superexchange. The intrabilayer interaction involves the three-site Mn-O-Mn superexchange much like the case of the well-known CaMnO3, while the interbilayer exchange, mediated via the longer Mn-O-O-Mn superexchange path, is considerably weaker. Consistent with the layered nature of the compound, we find a strong out-of-plane to in-plane band-mass anisotropy for Sr3Mn2O7 (m(z)*/m(x,y)* similar to 10.9 for electrons and similar to4.2 for holes), while for the related compound LaSr2Mn2O7, which is a ferromagnetic metal, we obtain a strong anisotropy in the resistivity rho(c)/rho(ab)similar to40 using kinetic transport theory, in qualitative agreement with the experimental value of similar to100.", journal = "Physical Review B: Condensed Matter and Materials Physics", title = "Electronic structure and exchange interaction in the layered perovskite Sr3Mn2O7", volume = "65", number = "9", doi = "10.1103/PhysRevB.65.094402" }
Meskine, H., Popović, Z. S.,& Satpathy, S.. (2002). Electronic structure and exchange interaction in the layered perovskite Sr3Mn2O7. in Physical Review B: Condensed Matter and Materials Physics, 65(9). https://doi.org/10.1103/PhysRevB.65.094402
Meskine H, Popović ZS, Satpathy S. Electronic structure and exchange interaction in the layered perovskite Sr3Mn2O7. in Physical Review B: Condensed Matter and Materials Physics. 2002;65(9). doi:10.1103/PhysRevB.65.094402 .
Meskine, H, Popović, Zoran S., Satpathy, Sashi, "Electronic structure and exchange interaction in the layered perovskite Sr3Mn2O7" in Physical Review B: Condensed Matter and Materials Physics, 65, no. 9 (2002), https://doi.org/10.1103/PhysRevB.65.094402 . .