Cylindrical Fermi surfaces formed by a fiat magnetic Brillouin zone in uranium dipnictides

D. Aoki, P. Wíniewski, K. Miyake, N. Watanabe, Y. Inada, R. Settai, E. Yamamoto, Y. Haga, Y. Onuki

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56 Citations (Scopus)


We succeeded in growing high-quality single crystals of UX 2 (X = Bi, Sb, As or P) by the self-flux and chemical transport methods and carried out de Haasvan Alphen and Shubnikov-de Haas experiments. We found quasi-two-dimensional Fermi surfaces in these U compounds. Fermi surfaces of UBi 2 are found to consist of one spherical Fermi surface and two cylindrical Fermi surfaces. Each Fermi surface in UBi 2 changes into two cylindrical surfaces in USb 2 and UAs 2 . This change in the Fermi surfaces is well explained on the basis of a fiat magnetic Brillouin zone. The quasi-two-dimensional character of the Fermi surfaces is mainly due to the conduction electrons in the U piane, including the 5f electrons. The itinerant nature of 5f electrons is reflected in the large cyclotron masses. The magnetic breakthrough (breakdown) phenomenon is also discussed for USb 2 .

Original languageEnglish
Pages (from-to)1517-1544
Number of pages28
JournalPhilosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties
Issue number8
Publication statusPublished - Aug 2000
Externally publishedYes

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physics and Astronomy(all)


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