Electronic Structure and Fermi Surface of LaRu_2Si_2
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概要
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Tl?e exaergy band :structure and tlae Fernti surface ttre calculated for LaRu,Si, w'itlv abody-centered tetragonal crystal structure by a self-consistexat relativistic symmetrizcdAPW naetlaod xvitlt 1.1te exchange auad correlatioua poteuatial in tlte local-density approxinaatioua. The unain Fermi surface is Qll extraordiuaarily large, closed hole s1?eet w'ith across-sectional area exceediutg the size of the Brillouirt zone itself. Tltere are addn-tionally small hole and electron slteets, all of whicla l'?ave no OpC11 orbit. The Fermu sur-face topology is consistent with tlae experimental result for tlae ltigla-field transversemagnetoresistance. B)' tl?ese Fermi surfaces, botlt tlte naaguaitude and tlae artgtulardependence of t1?e frequeuacy branches of tjae do [Iaas-van Alphema effect measurcdrecently by Ouauki et at. can be explaizted reasonably xx'ell. Tlae Fermi surfaces of t1?erelated heavy-electv'on compound CeRu.Si. and fex'romagnetic count>ound CeRuzGe.are discussed briefly.[LaRu.Si., CeRu.Si., CeRu.Ge., band tlteory, local-dexasity a)cproxin?ation, lj relativistic APW metl?od, energy bauad structure, Fermi surfacel
- 社団法人日本物理学会の論文
- 1992-07-15
著者
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Yamagami Hiroshi
College of General Education, Tohoku University
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Hasegawa Akira
College of General Education, Niigata University
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Yamagami Hiroshi
College Of General Education Tohoku University
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Hasegawa Akira
College Of Engineering Chiba University
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