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Effect of magnesium doping on the orbital and magnetic order in LiNiO(2)

Abstract:

In LiNiO2, the Ni3+ ions, with S=1/2 and twofold orbital degeneracy, are arranged on a triangular lattice. Using muon-spin relaxation and electron-spin resonance (ESR), we show that magnesium doping does not stabilize any magnetic or orbital order despite the absence of interplane Ni2+. A disordered, slowly fluctuating state develops below 12 K. In addition, we find that magnons are excited on the time scale of the ESR experiment. At the same time, a g factor anisotropy is observed, in agreem...

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Publication status:
Published

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Publisher copy:
10.1103/PhysRevB.78.104409

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Journal:
PHYSICAL REVIEW B
Volume:
78
Issue:
10
Publication date:
2008-09-05
DOI:
EISSN:
1550-235X
ISSN:
1098-0121
URN:
uuid:fa373de3-ae49-401b-be24-f6d5234bb28d
Source identifiers:
26644
Local pid:
pubs:26644
Language:
English

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