Magnetic structure of the conductive triangular-lattice antiferromagnet PdCrO2

被引：34

作者：

Takatsu, Hiroshi ^{[1
]}

Nenert, Gwilherm ^{[2
]}

Kadowaki, Hiroaki ^{[1
]}

Yoshizawa, Hideki ^{[3
]}

Enderle, Mechthild ^{[2
]}

Yonezawa, Shingo ^{[4
]}

Maeno, Yoshiteru ^{[4
]}

Kim, Jungeun ^{[5
]}

Tsuji, Naruki ^{[5
]}

Takata, Masaki ^{[5
]}

Zhao, Yang ^{[6
,7
,8
]}

Green, Mark ^{[9
]}

Broholm, Collin ^{[6
]}

机构：

[1] Tokyo Metropolitan Univ, Dept Phys, Hachioji, Tokyo 1920397, Japan

[2] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France

[3] Univ Tokyo, Inst Solid State Phys, Neutron Sci Lab, Tokai, Ibaraki 3191106, Japan

[4] Kyoto Univ, Grad Sch Sci, Dept Phys, Kyoto 6068502, Japan

[5] Japan Synchrotron Radiat Res Inst SPring, Sayo, Hyogo 6795198, Japan

[6] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

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

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

[9] NIST, NCNR, Gaithersburg, MD 20899 USA

来源：

PHYSICAL REVIEW B | 2014年 / 89卷 / 10期

关键词：

NEUTRON POWDER DIFFRACTION; BERRY PHASE; HEISENBERG-ANTIFERROMAGNET; SOLID OXYGEN; OXIDES; FERROMAGNET; CHIRALITY; LICRO2; STATE;

D O I：

10.1103/PhysRevB.89.104408

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We performed neutron single-crystal and synchrotron x-ray powder diffraction experiments in order to investigate the magnetic and crystal structures of the conductive layered triangular-lattice antiferromagnet PdCrO2 with a putative spin chirality, which contributes to an unconventional anomalous Hall effect. We revealed that the ground-state magnetic structure is a commensurate and nearly coplanar 120 degrees spin structure. The 120 degrees planes in different Cr layers seem to tilt with one another, leading to a small noncoplanarity. Such a small but finite noncoplanar stacking of the 120 degrees planes gives rise to a finite scalar spin chirality, which may be responsible for the unconventional nature of the Hall effect of PdCrO2.

引用

页数：12

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