Extreme magnetic field-boosted superconductivity

被引：194

作者：

Ran, Sheng ^{[1
,2
,3
]}

Liu, I-Lin ^{[1
,2
,3
]}

Eo, Yun Suk ^{[1
]}

Campbell, Daniel J. ^{[1
]}

Neves, Paul M. ^{[1
]}

Fuhrman, Wesley T. ^{[1
]}

Saha, Shanta R. ^{[1
,2
]}

Eckberg, Christopher ^{[1
]}

Kim, Hyunsoo ^{[1
]}

Graf, David ^{[4
]}

Balakirev, Fedor ^{[5
]}

Singleton, John ^{[5
,6
]}

Paglione, Johnpierre ^{[1
,2
]}

Butch, Nicholas P. ^{[1
,2
]}

机构：

[1] Univ Maryland, Dept Phys, Ctr Nanophys & Adv Mat, College Pk, MD 20742 USA

[2] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA

[3] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA

[4] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32306 USA

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

[6] Univ Oxford, Dept Phys, Clarendon Lab, Oxford, England

来源：

NATURE PHYSICS | 2019年 / 15卷 / 12期

基金：

美国国家科学基金会;

关键词：

Quantum Hall effect - Quantum theory - Superconducting materials;

D O I：

10.1038/s41567-019-0670-x

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Applied magnetic fields underlie exotic quantum states, such as the fractional quantum Hall effect(1) and Bose-Einstein condensation of spin excitations(2). Superconductivity, however, is inherently antagonistic towards magnetic fields. Only in rare cases(3-5) can these effects be mitigated over limited fields, leading to re-entrant superconductivity. Here, we report the coexistence of multiple high-field re-entrant superconducting phases in the spin-triplet superconductor UTe2 (ref.(6)). We observe superconductivity in the highest magnetic field range identified for any re-entrant superconductor, beyond 65 T. Although the stability of superconductivity in these high magnetic fields challenges current theoretical models, these extreme properties seem to reflect a new kind of exotic superconductivity rooted in magnetic fluctuations(7) and boosted by a quantum dimensional crossover(8).

引用

页码：1250 / +

页数：6

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