Suppressed Coherence due to Orbital Correlations in the Ferromagnetically Ordered Metallic Phase of Mn Compounds
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Suaaall Drtrde weight D together with S1112111 specific heart coefficient '( observed in the f'errornag-netic phase of' R) .A.NInO3 (R:La, Pr, Nd, 8111; A:C21, Sr, Ba) are an?t1yzed in ternas of' aproximity effect of' the klott insulator. The scaling theory I'or tl'te metal-instrlartor tratnsition xviththe critical enhar?cetaaerrt of orbital correlations tow'?trd the staggered ordering of txvo e. orIcLCxIsstrch as 3x' - r' and 3y' - r" symn?etries 11121) lead to tlte critical exponents of' D C( 6' and"7 c< c5' xvith u : 3/2 and J $ O. The resvtlt agrees with the experiuaaental indications.
- 社団法人日本物理学会の論文
- 1998-01-15
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