Study on anomalous Hall resistivity of Nd 2Mo 2-xTi xO 7

Taketomo Kageyama; Satoshi Iikubo; Shunsuke Yoshii; Yasuyuki Kondo; Masatoshi Sato; Yasuhiro Iye

doi:10.1143/JPSJ.70.3006

Study on anomalous Hall resistivity of Nd ₂Mo _2-xTi _xO ₇

Taketomo Kageyama, Satoshi Iikubo, Shunsuke Yoshii, Yasuyuki Kondo, Masatoshi Sato, Yasuhiro Iye

Institute for Materials Research (IMR)

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

Abstract

Hall resistivity ρ _H has been studied for single crystals of Nd ₂Mo ₂O ₇, which has the ferromagnetic and chiral ordered state. Effects of Ti-doping on ρ _H have also been studied down to 3 K under the magnetic field (H) up to 7 T. The T- and H-regions of the measurements have been extended for non-doped samples to 50 mK and 15 T. respectively. From the results, it has been confirmed that two components of the anomalous Hall resistivity exist. One is proportional to the net magnetization of Mo atoms, M _Mo. It changes its sign with the doping. The other is proportional to the net magnetization of Nd atoms, M _Nd and does not exhibit the sign change. The Hall resistivity has a finite and almost T-independent value at very low temperatures. These results on the behavior of ρH are discussed by considering the existing theories including the one recently proposed by a mechanism related to the spin chiral order.

Original language	English
Pages (from-to)	3006-3010
Number of pages	5
Journal	journal of the physical society of japan
Volume	70
Issue number	10
DOIs	https://doi.org/10.1143/JPSJ.70.3006
Publication status	Published - 2001 Oct

Keywords

Anomalous Hall resistivity
Pyrochlore molybdate
Spin chirality

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.70.3006

Cite this

@article{15b109680059478f95b0af08a50f03fb,

title = "Study on anomalous Hall resistivity of Nd 2Mo 2-xTi xO 7 ",

abstract = "Hall resistivity ρ H has been studied for single crystals of Nd 2Mo 2O 7, which has the ferromagnetic and chiral ordered state. Effects of Ti-doping on ρ H have also been studied down to 3 K under the magnetic field (H) up to 7 T. The T- and H-regions of the measurements have been extended for non-doped samples to 50 mK and 15 T. respectively. From the results, it has been confirmed that two components of the anomalous Hall resistivity exist. One is proportional to the net magnetization of Mo atoms, M Mo. It changes its sign with the doping. The other is proportional to the net magnetization of Nd atoms, M Nd and does not exhibit the sign change. The Hall resistivity has a finite and almost T-independent value at very low temperatures. These results on the behavior of ρH are discussed by considering the existing theories including the one recently proposed by a mechanism related to the spin chiral order.",

keywords = "Anomalous Hall resistivity, Pyrochlore molybdate, Spin chirality",

author = "Taketomo Kageyama and Satoshi Iikubo and Shunsuke Yoshii and Yasuyuki Kondo and Masatoshi Sato and Yasuhiro Iye",

year = "2001",

month = oct,

doi = "10.1143/JPSJ.70.3006",

language = "English",

volume = "70",

pages = "3006--3010",

journal = "Journal of the Physical Society of Japan",

issn = "0031-9015",

publisher = "Physical Society of Japan",

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TY - JOUR

T1 - Study on anomalous Hall resistivity of Nd 2Mo 2-xTi xO 7

AU - Kageyama, Taketomo

AU - Iikubo, Satoshi

AU - Yoshii, Shunsuke

AU - Kondo, Yasuyuki

AU - Sato, Masatoshi

AU - Iye, Yasuhiro

PY - 2001/10

Y1 - 2001/10

N2 - Hall resistivity ρ H has been studied for single crystals of Nd 2Mo 2O 7, which has the ferromagnetic and chiral ordered state. Effects of Ti-doping on ρ H have also been studied down to 3 K under the magnetic field (H) up to 7 T. The T- and H-regions of the measurements have been extended for non-doped samples to 50 mK and 15 T. respectively. From the results, it has been confirmed that two components of the anomalous Hall resistivity exist. One is proportional to the net magnetization of Mo atoms, M Mo. It changes its sign with the doping. The other is proportional to the net magnetization of Nd atoms, M Nd and does not exhibit the sign change. The Hall resistivity has a finite and almost T-independent value at very low temperatures. These results on the behavior of ρH are discussed by considering the existing theories including the one recently proposed by a mechanism related to the spin chiral order.

AB - Hall resistivity ρ H has been studied for single crystals of Nd 2Mo 2O 7, which has the ferromagnetic and chiral ordered state. Effects of Ti-doping on ρ H have also been studied down to 3 K under the magnetic field (H) up to 7 T. The T- and H-regions of the measurements have been extended for non-doped samples to 50 mK and 15 T. respectively. From the results, it has been confirmed that two components of the anomalous Hall resistivity exist. One is proportional to the net magnetization of Mo atoms, M Mo. It changes its sign with the doping. The other is proportional to the net magnetization of Nd atoms, M Nd and does not exhibit the sign change. The Hall resistivity has a finite and almost T-independent value at very low temperatures. These results on the behavior of ρH are discussed by considering the existing theories including the one recently proposed by a mechanism related to the spin chiral order.

KW - Anomalous Hall resistivity

KW - Pyrochlore molybdate

KW - Spin chirality

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