Accurate determination of the Fermi surface of tetragonal FeS via quantum oscillation measurements and quasiparticle self-consistent GW calculations
Accurate determination of the Fermi surface of tetragonal FeS via quantum oscillation measurements and quasiparticle self-consistent GW calculations
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通过量子振荡测量和准粒子自洽引力波计算精确确定四方 FeS 的费米面
DOI：
10.1103/physrevb.99.134501
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发表时间：
2019
影响因子：
3.7
通讯作者：
Hiroaki Ikeda
中科院分区：
文献类型：
--
作者：
Taichi Terashima;Naoki Kikugawa;David Graf;Hishiro T. Hirose;Shinya Uji;Yoshitaka Matsushita;Hai Lin;Xiyu Zhu;Hai-Hu Wen;Takuya Nomoto;Katsuhiro Suzuki;Hiroaki Ikeda
我们进行de Haas-van Alphen测量和准粒子自洽GW（QSGW）计算FeS。计算得到的费米面由两个空穴圆柱和两个电子圆柱组成。我们观察到所有八个预测的FS截面实验。与动量无关的能带能量调整小于0.1 eV，计算和观察到的横截面之间的最大偏差小于0.2%的布里渊区面积。载流子密度为载流子/Fe。整个FS圆柱体的质量增强几乎是均匀的，并且是中等的。不存在具有特征的第三孔柱有利于节超导能隙的形成。
We perform de Haas–van Alphen measurements and quasiparticle self-consistentGW(QSGW) calculations on FeS. The calculated Fermi surface (FS) consists of two hole and two electron cylinders. We observe all the eight predicted FS cross sections experimentally. With momentum-independent band-energy adjustments of less than 0.1 eV, the maximum deviation between the calculated and observed cross sections is less than 0.2% of the Brillouin zone area for. The carrier density iscarriers/Fe. The mass enhancements are nearly uniform across the FS cylinders and moderate,. The absence of a third hole cylinder withcharacter is favorable for the formation of a nodal superconducting gap.