Fragile 3D Order in V1-xMoxO2

被引：9

作者：

Davenport, Matthew A. ^{[1
]}

Krogstad, Matthew J. ^{[2
]}

Whitt, Logan M. ^{[1
]}

Hu, Chaowei ^{[3
,4
]}

Douglas, Tyra C. ^{[1
]}

Ni, Ni ^{[3
,4
]}

Rosenkranz, Stephan ^{[2
]}

Osborn, Raymond ^{[2
]}

Allred, Jared M. ^{[1
]}

机构：

[1] Univ Alabama, Dept Chem & Biochem, Tuscaloosa, AL 35487 USA

[2] Argonne Natl Lab, Mat Sci Div, Lemont, IL 60439 USA

[3] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[4] Univ Calif Los Angeles, Calif NanoSyst Inst, Los Angeles, CA 90095 USA

来源：

PHYSICAL REVIEW LETTERS | 2021年 / 127卷 / 12期

关键词：

INSULATOR-TRANSITION; DIFFUSE-SCATTERING;

D O I：

10.1103/PhysRevLett.127.125501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The metal-to-insulator transition in rutile VO2 has proven uniquely difficult to characterize because of the complex interplay between electron correlations and atomic structure. Here, we report the discovery of the sudden collapse of three-dimensional order in the low-temperature phase of V1-xMoxO2 at x = 0.17 and the emergence of a novel frustrated two-dimensional order at x = 0.19, with only a slight change in electronic properties. Single crystal diffuse x-ray scattering reveals that this transition from the 3D M1 phase to a 2D variant of the M2 phase results in long-range structural correlations along symmetry-equivalent (11L) planes of the tetragonal rutile structure, yet extremely short-range correlations transverse to these planes. These findings suggest that this two dimensionality results from a novel form of geometric frustration that is essentially structural in origin.

引用

页数：6

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