Competition between Hund-Rule Coupling and Kondo Effect
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概要
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We investigate a probletau abottt the competition betxveen the hybridizattion and the Hundrule cottplitug by applying t[ae Wilson nurnerical renorn?a1ization-grotzp rnethod to the extendedKondo model where the iunpurity spin interacts via tlae Hund-rtrle coupling, with an extra spinwhich is isolated frotm the condtrction electrotus. It is shown that the Httnd-rule cotrpling is anirrelevant pertturbation against the strong coupling fixed point, How'ever, the Hund-rtrle covrplingdecreases the characteristic energy V'K drastically to the lower side and the irrelevant operator,which descrilces tlae Joxv energy physics, takes a f'ortm of' ferromagnetic excharuge interactionbetween the extra spin and the Kondo resonance states bec?ruse of the existence of the Hundrule cotrpling.
- 社団法人日本物理学会の論文
- 1997-04-15
著者
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Miyake Kazumasa
Department Of Internal Medicine Division Of Gastroenterology Nippon Medical School
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Kusunose Hiroaki
Department Of Material Physics Faculty Of Engineering Science Osaka University
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