An Itinerant Antiferromagnetic Metal Without Magnetic Constituents

Published

July 13, 2015

Author(s)

E. Svanidze, Jiakui K. Wang, Tiglet Besara, L. Liu, Qingzhen Huang, T. Siegrist, Benjamin Frandsen, Jeffrey W. Lynn, Andriy H. Nevidomskyy, Monica Barbara Gamza, M.C. Aronson, Y.J. Uemura, E. Morosan

Abstract

Itinerant and local moment magnetism have substantively different origins, and require distinct theoretical treatment. A unified theory of magnetism has long been sought after, and remains elusive, mainly due to the limited number of known itinerant magnetic systems. In the case of the two such examples discovered several decades ago, ZrZn₂¹ and Sc₃In², the understanding of their magnetic ground states draws on the existence of 3d electrons subject to strong spin fluctuations. Similarly, in Cr³, an elemental itinerant ferromagnetic (IAFM) with a spin density wave (SDW) ground state its 3d character has been deemed crucial to it being magnetic. Here we report the discovery of the first IAFM with no magnetic constituents, TiAu, with no Ti d electrons. Ti is shown to be close to the Ti^{4+ 3d}u0^4_s⁰ state, therefore this new IAFM challenges the currently limited understanding of weak itinerant antiferromagnetism, while providing long sought-after insights into the effects of spin fluctuations in itinerant electron systems.

Citation

Nature Communications

Volume

6

Pub Type

Journals

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Keywords

Itinerant antiferromagnet

Citation

Svanidze, E. , Wang, J. , Besara, T. , Liu, L. , Huang, Q. , Siegrist, T. , Frandsen, B. , Lynn, J. , Nevidomskyy, A. , Gamza, M. , Aronson, M. , Uemura, Y. and Morosan, E. (2015), An Itinerant Antiferromagnetic Metal Without Magnetic Constituents, Nature Communications, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=916051 (Accessed April 18, 2024)