Anomalous Fermi surface in FeSe seen by Shubnikov-de Haas oscillation measurements

被引：158

作者：

Terashima, Taichi ^{[1
]}

Kikugawa, Naoki ^{[1
]}

Kiswandhi, Andhika ^{[2
]}

Choi, Eun-Sang ^{[2
]}

Brooks, James S. ^{[2
]}

Kasahara, Shigeru ^{[3
]}

Watashige, Tatsuya ^{[3
]}

Ikeda, Hiroaki ^{[3
,4
]}

Shibauchi, Takasada ^{[3
,5
]}

Matsuda, Yuji ^{[3
]}

Wolf, Thomas ^{[6
]}

Boehmer, Anna E. ^{[6
]}

Hardy, Frederic ^{[6
]}

Meingast, Christoph ^{[6
]}

von Loehneysen, Hilbert ^{[6
]}

Suzuki, Michi-To ^{[7
]}

Arita, Ryotaro ^{[7
]}

Uji, Shinya ^{[1
]}

机构：

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

[2] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA

[3] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan

[4] Ritsumeikan Univ, Dept Phys Sci, Shiga 5258577, Japan

[5] Univ Tokyo, Dept Adv Mat Sci, Chiba 2778561, Japan

[6] Karlsruhe Inst Technol, Inst Solid State Phys IFP, D-76021 Karlsruhe, Germany

[7] RIKEN, Ctr Emergent Matter Sci, Wako, Saitama 3510198, Japan

来源：

PHYSICAL REVIEW B | 2014年 / 90卷 / 14期

基金：

美国国家科学基金会;

关键词：

SUPERCONDUCTIVITY;

D O I：

10.1103/PhysRevB.90.144517

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have observed Shubnikov-de Haas oscillations in FeSe. The Fermi surface deviates significantly from predictions of band-structure calculations and most likely consists of one electron and one hole thin cylinder. The carrier density is in the order of 0.01 carriers/Fe, an order of magnitude smaller than predicted. Effective Fermi energies as small as 3.6 meV are estimated. These findings call for elaborate theoretical investigations incorporating both electronic correlations and orbital ordering.

引用

页数：6

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