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Electronic structure and the Fermi surface of UBe$$_{13}$$

Maehira, Takahiro; Higashitani, Atsushi*; Higuchi, Masahiko*; Yasuhara, Hiroshi*; Hasegawa, Akira*

UBe$$_{13}$$ is a typical heavy-fermion superconductor compound. The lowtemperature electronic specific heat coefficient has the anomalous large value, $$gamma_{exp}$$=1.1J/K$$^2$$mol, which is the largest among the heavy fermion uranium compounds. It also becomes the superconductor below T$$_C$$=0.85K. Therefore, UBe$$_{13}$$ is an important material as a strongly correlated electron system, and it is necessary to study from both sides of the theory and the experiment. The measurement suggests that the Fermi surface of UBe$$_{13}$$ may consist of small sheets. The energy band structure and the Fermi surface for UBe$$_{13}$$ are calculated by the relativistic linear APW method.

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Category:Physics, Condensed Matter

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