DOI > 10.5291/ILL-DATA.5-41-1048

This proposal is publicly available since 08/21/2025

Title

Structure of a spin-flop phase in the Weyl semimetal EuCuAs

Abstract

EuCuAs hosts magnetically-induced Weyl fermions whose band topology depends on the magnetic structure. In zero field the magnetic structure is a transverse helix with propagation vector (0, 0, 0.41). The aim of the proposal is to measure the magnetic structure in a spin-flop phase which is stable for magnetic fields H > H1 applied perpendicular to the c-axis, where H1 = 0.3T at T = 2K. We wish to measure the magnetic structure of the spin-flop phase in order to identify the magnetic interactions which stabilize the zero-field helix. We plan to collect magnetic reflections as a function of field applied by a vertical field magnet.

Experimental Report

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Data Citation

The recommended format for citing this dataset in a research publication is in the following format:

BOOTHROYD Andrew Timothy; FABELO ROSA Oscar Ramon; RODRIGUEZ VELAMAZAN Jose Alberto; JIAN-RUI SOH and Jinzhao Sun. (2020). Structure of a spin-flop phase in the Weyl semimetal EuCuAs. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-41-1048

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Metadata

Experiment Parameters

  • Environment temperature

    2K to 20K
  • Experiment energy

    Lambda = 0.84 A

Sample Parameters

  • Formula

    • EuCuAs