Charge ordering in nickelates: and
- Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
- Univ. of Santiago (Spain). Dept. of Applied Physics and Inst. of Technological Research
- Univ. of California, Davis, CA (United States). Dept. of Physics
Ab initio calculations allow us to establish a close connection between the Ruddlesden-Popper layered nickelates and cuprates not only in terms of filling of d levels (close to d9) but also because they show Ni1+(S = 1/2)/Ni2+(S = 0) stripe ordering. We obtained the insulating charge-ordered ground state from a combination of structural distortions and magnetic order. The Ni2+ ions are in a low-spin configuration (S = 0) yielding an antiferromagnetic arrangement of Ni1+ S = 1/2 ions like the long-sought spin-1/2 antiferromagnetic insulator analog of the cuprate parent materials. Furthermore, the analogy extends further with the main contribution to the bands near the Fermi energy coming from hybridized Ni d$$_x$$2-$$_y$$2 and O $$p$$ states.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-06CH11357; FG02-04ER46111
- OSTI ID:
- 1352640
- Alternate ID(s):
- OSTI ID: 1287759
- Journal Information:
- Physical Review B, Vol. 94, Issue 8; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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