Quantum oscillations of electrical resistivity in an insulator

被引：95

作者：

Xiang, Z. ^{[1
]}

Kasahara, Y. ^{[2
]}

Asaba, T. ^{[1
]}

Lawson, B. ^{[1
,3
]}

Tinsman, C. ^{[1
]}

Chen, Lu ^{[1
]}

Sugimoto, K. ^{[4
]}

Kawaguchi, S. ^{[4
]}

Sato, Y. ^{[2
]}

Li, G. ^{[1
]}

Yao, S. ^{[5
]}

Chen, Y. L. ^{[6
]}

Iga, F. ^{[7
]}

Singleton, John ^{[8
]}

Matsuda, Y. ^{[2
]}

Li, Lu ^{[1
]}

机构：

[1] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA

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

[3] Univ Chretienne Bilingue Congo, Fac Appl Sci, Beni, North Kivu, DEM REP CONGO

[4] Japan Synchrotron Radiat Res Inst, Sayo, Hyogo 6795198, Japan

[5] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[6] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England

[7] Ibaraki Univ, Coll Sci, Mito, Ibaraki 3108512, Japan

[8] Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA

来源：

SCIENCE | 2018年 / 362卷 / 6410期

基金：

美国国家科学基金会; 日本学术振兴会;

关键词：

METALLIC STATE; GAP; SURFACE; YBB12;

D O I：

10.1126/science.aap9607

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

In metals, orbital motions of conduction electrons on the Fermi surface are quantized in magnetic fields, which is manifested by quantum oscillations in electrical resistivity. This Landau quantization is generally absent in insulators. Here, we report a notable exception in an insulator-ytterbium dodecaboride (YbB12). The resistivity of YbB12, which is of a much larger magnitude than the resistivity in metals, exhibits distinct quantum oscillations. These unconventional oscillations arise from the insulating bulk, even though the temperature dependence of the oscillation amplitude follows the conventional Fermi liquid theory of metals with a large effective mass. Quantum oscillations in the magnetic torque are also observed, albeit with a lighter effective mass.

引用

页码：65 / 68

页数：4

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