The reverse quantum limit and its implications for unconventional quantum oscillations in YbB12

被引：2

作者：

Mizzi, Christopher A. ^{[1
]}

Kushwaha, Satya K. ^{[1
,2
,3
,4
]}

Rosa, Priscila F. S. ^{[5
]}

Phelan, W. Adam ^{[3
,4
,6
]}

Arellano, David C. ^{[6
]}

Pressley, Lucas A. ^{[3
,4
,7
]}

Mcqueen, Tyrel M. ^{[2
,3
,7
]}

Chan, Mun K. ^{[1
]}

Harrison, Neil ^{[1
]}

机构：

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

[2] Johns Hopkins Univ, Inst Quantum Matter, William H Miller Dept Phys & Astron 3, Baltimore, MD 21218 USA

[3] Johns Hopkins Univ, Dept Chem, Baltimore, MD 21218 USA

[4] Johns Hopkins Univ, Dept Chem, Platform Accelerated Realizat Anal & Discovery Int, Baltimore, MD 21218 USA

[5] Los Alamos Natl Lab, MPA Q, Los Alamos, NM 87545 USA

[6] Los Alamos Natl Lab, MST 16, Los Alamos, NM 87545 USA

[7] Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA

来源：

NATURE COMMUNICATIONS | 2024年 / 15卷 / 01期

基金：

美国国家科学基金会;

关键词：

ELECTRONIC PHASE-TRANSITION; HEAVY FERMIONS; METALLIC STATE; INSULATOR; GRAPHITE;

D O I：

10.1038/s41467-024-45801-2

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：

The quantum limit in a Fermi liquid, realized when a single Landau level is occupied in strong magnetic fields, gives rise to unconventional states, including the fractional quantum Hall effect and excitonic insulators. Stronger interactions in metals with nearly localized f-electron degrees of freedom increase the likelihood of these unconventional states. However, access to the quantum limit is typically impeded by the tendency of f-electrons to polarize in a strong magnetic field, consequently weakening the interactions. In this study, we propose that the quantum limit in such systems must be approached in reverse, starting from an insulating state at zero magnetic field. In this scenario, Landau levels fill in the reverse order compared to regular metals and are closely linked to a field-induced insulator-to-metal transition. We identify YbB(12 )as a prime candidate for observing this effect and propose the presence of an excitonic insulator state near this transition.

引用

页数：8

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