De Haas-van Alphen Effect and Fermi Surface Properties in Nearly Ferromagnet SrCo2P2

被引：15

作者：

Teruya, Atsushi ^{[1
]}

Nakamura, Ai ^{[1
]}

Takeuchi, Tetsuya ^{[2
]}

Harima, Hisatomo ^{[3
]}

Uchima, Kiyoharu ^{[4
]}

Hedo, Masato ^{[5
]}

Nakama, Takao ^{[5
]}

Onuki, Yoshichika ^{[5
]}

机构：

[1] Univ Ryukyus, Grad Sch Engn & Sci, Nishihara, Okinawa 9030213, Japan

[2] Osaka Univ, Low Temp Ctr, Toyonaka, Osaka 5600043, Japan

[3] Kobe Univ, Grad Sch Sci, Kobe, Hyogo 6578501, Japan

[4] Okinawa Christian Jr Coll, Nishihara, Okinawa 9030207, Japan

[5] Univ Ryukyus, Fac Sci, Nishihara, Okinawa 9030213, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2014年 / 83卷 / 11期

关键词：

THCR2SI2; STRUCTURE; PHOSPHIDES CACO2P2;

D O I：

10.7566/JPSJ.83.113702

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We grew high-quality single crystals of SrCo2P2 with the ThCr2Si2-type tetragonal structure, and clarified the Fermi surface properties by carrying out de Haas-van Alphen (dHvA) experiments and energy band calculations. SrCo2P2 is known to be a nearly ferromagnetic compound, where the magnetic susceptibility follows the Curie-Weiss law above 200 K, with the effective magnetic moment mu(eff) = 1.72 mu(B)/Co, but becomes almost constant below about 100 K. The electronic specific heat coefficient gamma is thus relatively large, being gamma = 40 mJ/(K-2.mol). Detected dHvA branches possess the corresponding cyclotron effective masses m(c)*, ranging from 0.87 to 7.2 m(0) (m(0): rest mass of an electron). The angular dependences of the dHvA frequencies are well explained by the results of full-potential linearized augmented plane wave (FLAPW) energy band calculations, revealing a multiply-connected band 25th hole Fermi surface and a compensated nearly cylindrical band 26th electron Fermi surface. It is thus concluded that the electronic state of SrCo2P2 is nearly three-dimensional rather than two-dimensional.

引用

页数：4