# Anomalous Hall effect in the magnetic Weyl semimetal NdAlGe with plateaus observed at low temperatures

https://mdr.nims.go.jp/datasets/2d0aa826-c5c1-4ad5-bf35-f7f2ab536758

## File

- [PhysRevB.109.035143.pdf](https://mdr.nims.go.jp/filesets/e83cee5d-4853-40c4-a4ff-41e3d1c2cefe/download) ([Detail](https://mdr.nims.go.jp/filesets/e83cee5d-4853-40c4-a4ff-41e3d1c2cefe.md))

## Id

2d0aa826-c5c1-4ad5-bf35-f7f2ab536758

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-01-21T21:37:14.695936Z

## Updated at

2024-01-26T06:05:01.622755Z

## Published at

2024-01-26T07:30:09.566033Z

## Doi



## First published url

https://doi.org/10.1103/PhysRevB.109.035143

## Date published

2024-01-18

## Recorded date published

2024-1

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Anomalous Hall effect in the magnetic Weyl semimetal NdAlGe with plateaus
    observed at low temperatures
  title_type: alternative
  lang: ja
- title: Anomalous Hall effect in the magnetic Weyl semimetal NdAlGe with plateaus
    observed at low temperatures
  title_type: original
  lang: en

## Description

- description: 'In the RAl(Si,Ge) (R: lanthanides) family, both spatial inversion
    and time-reversal symmetries are broken. This may offer opportunities to study
    Weyl-fermion physics in nontrivial spin structures emerging from a noncentrosymmetric
    crystal structure. In this study, we investigated the anomalous Hall effect (AHE)
    in NdAlGe via magnetotransport, magnetization, and magnetic torque measurements
    down to 40 mK (0.4 K for magnetization). The single crystals grown by a laser-heated
    floating-zone method exhibit a single magnetic phase transition at T_M = 13.5
    K, where the TM is the transition temperature. With the magnetic field parallel
    to the easy [001] axis, the AHE gradually evolves as the temperature decreases
    below T_M. The anomalous Hall conductivity (AHC) reaches ∼320 Ohm^(−1)cm^(−1)
    at 40 mK in the magnetically saturated state. Except in low-temperature low-field
    plateau phases, the AHC and magnetization are proportional, and their ratio agrees
    with the ratios for conventional ferromagnets, suggesting that the intrinsic AHE
    occurs by the Karplus-Luttinger mechanism. Below ∼0.6 K, the curves of Hall resistivity
    against the field exhibit plateaus at low fields below ∼0.5 T, correlating with
    the plateaus in the magnetization curve. For the first plateau, the magnetization
    is one order of magnitude smaller than the magnetically saturated state, whereas
    the AHE is more than half that in the saturated state. This finding under well
    below T_M suggests that the AHE at the first plateau is not governed by the magnetization
    and may be interpreted based on a multipole or spin chirality.'
  description_type: abstract
  lang: eng

## Creator

- name: Naoki Kikugawa
  role: author
  orcid: https://orcid.org/0000-0003-3975-4478
- name: Shinya Uji
  role: author
  orcid: https://orcid.org/0000-0001-9351-6388
- name: Taichi Terashima
  role: author
  orcid: https://orcid.org/0000-0001-9239-0621

## Contact agent



## Publisher

organization: American Physical Society (APS)

## Managing organization



## Keyword

- subject: Anomalous Hall effect, Topological material
  schema: not_defined

## Rights

- identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: PHYSICAL REVIEW B
  issn: '24699950'
  volume: '109'
  issue: '3'
  start_page: 35143
  end_page: 35143

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## Fileset

- id: e83cee5d-4853-40c4-a4ff-41e3d1c2cefe
  filename: PhysRevB.109.035143.pdf
  content_type: application/pdf
  size: 1752303
  md5: d746b38884ab0742fea52ad23fbe6bee

## Thumbnail

fileset_id: e83cee5d-4853-40c4-a4ff-41e3d1c2cefe
filename: PhysRevB.109.035143.pdf