Magnetic edge fields in UTe2 near zero background fields

被引：1

作者：

Iguchi, Yusuke ^{[1
,2
]}

Man, Huiyuan ^{[1
,3
]}

Thomas, S. M. ^{[4
]}

Ronning, Filip ^{[4
]}

Ishizuka, Jun ^{[5
,6
]}

Sigrist, Manfred ^{[6
]}

Rosa, Priscila F. S. ^{[4
]}

Moler, Kathryn A. ^{[1
,2
,7
]}

机构：

[1] Stanford Univ, Geballe Lab Adv Mat, Stanford, CA 94305 USA

[2] Stanford Inst Mat & Energy Sci, SLAC Natl Accelerator Lab, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA

[3] Stanford Univ, Stanford Nano Shared Facil, Stanford, CA 94305 USA

[4] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[5] Niigata Univ, Fac Engn, Ikarashi, Niigata 9502181, Japan

[6] Swiss Fed Inst Technol, Inst Theoret Phys, CH-8093 Zurich, Switzerland

[7] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA

来源：

PHYSICAL REVIEW B | 2024年 / 110卷 / 21期

基金：

日本学术振兴会; 瑞士国家科学基金会; 美国国家科学基金会;

关键词：

TIME-REVERSAL SYMMETRY; SUPERCONDUCTIVITY;

D O I：

10.1103/PhysRevB.110.214505

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Chiral superconductors are theorized to exhibit spontaneous edge currents. Here, we found magnetic fields at the edges of UTe2, a candidate odd-parity chiral superconductor, that seem to agree with predictions for a chiral order parameter. However, we did not detect the chiral domains that would be expected, and recent polar Kerr and muon spin relaxation data in nominally clean samples argue against chiral superconductivity. Our results show that hidden sources of magnetism must be carefully ruled out when using spontaneous edge currents to identify chiral superconductivity.

引用

页数：8

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