Orbital order and possible superconductivity in LaNiO3/LaMO3 superlattices

Physical Review Letters

Volumn 100, Issue 1, 2008, Pages

  Chaloupka, Jiří ^a,b   Khaliullin, Giniyat ^a  

^a MAX PLANCK INSTITUT FÜR FESTKÖRPERFORSCHUNG   (Germany)

^b MASARYK UNIVERSITY   (Czech Republic)

Author keywords

[No Author keywords available]

Indexed keywords

CHARGE TRANSFER; ELECTRONIC STATES; ELECTRONS; PEROVSKITE; SUPERLATTICES;

EPITAXIAL STRAIN; PEROVSKITE LATTICES;

SUPERCONDUCTIVITY;

EID: 40749154913     PISSN: 00319007     EISSN: 10797114     Source Type: Journal    
DOI: 10.1103/PhysRevLett.100.016404     Document Type: Article

References (21)

1. M. Imada, A. Fujimori, and Y. Tokura, Rev. Mod. Phys. 70, 1039 (1998). RMPHAT 0034-6861 10.1103/RevModPhys.70.1039
2. Y. Tokura, Phys. Rev. Lett. 70, 2126 (1993). PRLTAO 0031-9007 10.1103/PhysRevLett.70.2126
3. M. Izumi, Mater. Sci. Eng. B 84, 53 (2001). MSBTEK 0921-5107 10.1016/S0921-5107(01)00569-4
4. A. Ohtomo, D.A. Muller, J.L. Grazul, and H.Y. Hwang, Nature (London) NATUAS 0028-0836 419, 378 (2002). 10.1038/nature00977
5. J. Chakhalian, Nature Phys. 2, 244 (2006). NPAHAX 1745-2481 10.1038/nphys272
6. E. Pavarini, Phys. Rev. Lett. 87, 047003 (2001). PRLTAO 0031-9007 10.1103/PhysRevLett.87.047003
7. T. Kimura and Y. Tokura, Annu. Rev. Mater. Sci. 30, 451 (2000). ARMSCX 0084-6600 10.1146/annurev.matsci.30.1.451
8. S. Okamoto and A.J. Millis, Nature (London) NATUAS 0028-0836 428, 630 (2004). 10.1038/nature02450
9. J.B. Torrance, Phys. Rev. B PRBMDO 0163-1829 45, 8209 (1992). 10.1103/PhysRevB.45.8209
10. J.A. Alonso, Phys. Rev. Lett. 82, 3871 (1999). PRLTAO 0031-9007 10.1103/PhysRevLett.82.3871
11. J.-S. Zhou and J.B. Goodenough, Phys. Rev. B PRBMDO 0163-1829 69, 153105 (2004). 10.1103/PhysRevB.69.153105
12. J.-S. Zhou, J.B. Goodenough, and B. Dabrowski, Phys. Rev. Lett. 95, 127204 (2005). PRLTAO 0031-9007 10.1103/PhysRevLett.95.127204
13. V. Scagnoli, Phys. Rev. B PRBMDO 0163-1829 73, 100409(R) (2006). 10.1103/PhysRevB.73.100409
14. N. Manini, G.E. Santoro, A. Dal Corso, and E. Tosatti, Phys. Rev. B PRBMDO 0163-1829 66, 115107 (2002). 10.1103/PhysRevB.66.115107
15. O. Gunnarsson, E. Koch, and R.M. Martin, Phys. Rev. B PRBMDO 0163-1829 54, R11026 (1996). 10.1103/PhysRevB.54.R11026
16. M.V. Mostovoy and D.I. Khomskii, Phys. Rev. Lett. 92, 167201 (2004). PRLTAO 0031-9007 10.1103/PhysRevLett.92.167201
17. A.M. Oleś, G. Khaliullin, P. Horsch, and L.F. Feiner, Phys. Rev. B PRBMDO 0163-1829 72, 214431 (2005). 10.1103/PhysRevB.72.214431
18. J. Chaloupka and G. Khaliullin (unpublished).
19. S. Zhou, Phys. Rev. Lett. 94, 206401 (2005). PRLTAO 0031-9007 10.1103/PhysRevLett.94.206401
20. F.C. Zhang, C. Gros, T.M. Rice, and H. Shiba, Supercond. Sci. Technol. SUSTEF 0953-2048 1, 36 (1988). 10.1088/0953-2048/1/1/009
21. At a first glance, La2NiMO6 superlattice might seem as an analog of layered perovskite La2-xSrxNiO4 at x/1 compositions [R.J. Cava, Phys. Rev. B PRBMDO 0163-1829 43, 1229 (1991)], where an average valence state is Ni3+. However, there are two crucial differences. First, LaSrNiO4 is a solid solution of La and Sr where large local variations of the ratio La/Sr (forming perhaps some patterns) are possible. This should lead to mixed valence states Ni2+,3+,4+ and strong disorder effects. Second, there is no compression of NiO6 octahedra in La2-xSrxNiO4, which are rather elongated at small x and become of a regular shape at x/1. For these reasons, La2NiMO6 superlattice and La2-xSrxNiO4 solid solution should have different properties. 10.1103/PhysRevB.43.1229