de Haas-van Alphen Effect in Pressure-Induced Superconductor CrAs

被引：0

作者：

Kaneyoshi, Jun ^{[1
]}

Yoshinaga, Takeo ^{[1
]}

Matsuoka, Eiichi ^{[1
]}

Kotegawa, Hisashi ^{[1
]}

Tou, Hideki ^{[1
]}

Hirose, Hishiro T. ^{[2
]}

Terashima, Taichi ^{[2
]}

Uji, Shinya ^{[2
]}

Sugawara, Hitoshi ^{[1
]}

机构：

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

[2] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050003, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2021年 / 90卷 / 03期

关键词：

MAGNETIC-STRUCTURE; TRANSITION;

D O I：

10.7566/JPSJ.90.034712

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the first observation of the de Haas-van Alphen (dHvA) effect in CrAs under hydrostatic pressures of up to 2.2 GPa, exceeding the critical pressure P-c similar to 0.7 GPa, where the antiferromagnetic (helimagnetic) state is suppressed and the unconventional superconductivity emerges. The small Fermi surface (FS) with the dHvA frequency F of 220 T and the cyclotron effective mass m(c)* of 0.9 m(0) (m(0): rest mass of an electron) at ambient pressure disappears above P-c; instead, larger FSs with F of up to 3480T with relatively heavy m(c)* of up to 7.6m(0) were observed.

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页数：5

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