Electronic Structure and Fermi Surface for LaNi_2Ge_2 and CeNi_2Ge_2
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概要
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Alc-iraitio calctrlations of the elect.ronic strtrcture f'or non-rauagtuetic heavy-['ertniota ceritruaa corn-potrnd CeNizGex and the reference ttaaterial LaNixGen la?rve been per['ortned by an all-electronftrlly-relativistic atrgtnented-plane-wave (RLAPW) n?et[tod with an exchange-corre1?ttiora poten-tial in a local-derasity approxinaation. The Ferraai strrfaces ['or tl?e two cotaapourads are c;tlculatedto investigate a dependence of' 4f electrons in the bands near tlte Fernai energy. The obtatitaedFermat surfarce of LaNizGez can account well ['or origir?s of tlte br'ancltes observed by the de Haas-van Alphen (dHvA) effect. Tlae calctrlated cyclotrorr tnass for the dHvA branclaes is qtrantitatixxely cornjcarable with the observed one, corresponding to a srnatll enhatacertaent factor estiznatedfrona tlae electronic specific lueat coefficient. In order to eltrcidate theoretically-predicted dHvAbranches for CeNixGex, the dHvA freqtrencies along the sy?ntnetry axes are ca[ctm1ated togetherwith the cyclotron nuass.
- 社団法人日本物理学会の論文
- 1999-06-15
著者
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YAMAGAMI Hiroshi
Graduate School of Science, Tohoku University
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Yamagami Hiroshi
Graduate School Of Science Tohoku University
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Yamagami Hiroshi
Graduate School Of Science And Technology Niigata University
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Yamagami Hiroshi
Graduate School of Science,Tohoku University
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