We report the tetragonal heavy-fermion compound CeAuSb2 (space group P4/nmm ) exhibits incommensurate spin-density wave (SDW) order below TN ≈ 6.5 K with the propagation vector qA = (δA, δA, 1/2 ). The application of uniaxial stress along the [010] direction induces a sudden change in the resistivity ratio ρa/ρb at a compressive strain of ε ≈ - 0.5 %. Here we use neutron scattering to show that the uniaxial stress induces a first-order transition to a SDW state with a different propagation vector (0, δB,1/2) with δB = 0.25.The magnetic structure of the new (B) phase consists of Ce layers with ordered moments alternating with layers with zero moment stacked along the c axis. The ordered layers have an up-up-down-down configuration along the b axis. This is an unusual situation in which the loss of spatial inversion in a metallic system is driven by the magnetic order. We argue that the change in SDW wave vector leads to Fermi-surface reconstruction and a concomitant change in the transport properties.
Waite, R., et al. "Spin-density-wave order controlled by uniaxial stress in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mrow><mml:mi>CeAuSb</mml:mi></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:math>." Physical Review. B, vol. 106, no. 22, Dec. 2022. https://doi.org/10.1103/physrevb.106.224415
Waite, R., Orlandi, F., Sokolov, D. A., Ribeiro, R. A., Canfield, P. C., Manuel, P., Khalyavin, D. D., Hicks, C. W., & Hayden, S. M. (2022). Spin-density-wave order controlled by uniaxial stress in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mrow><mml:mi>CeAuSb</mml:mi></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:math>. Physical Review. B, 106(22). https://doi.org/10.1103/physrevb.106.224415
Waite, R., Orlandi, F., Sokolov, D. A., et al., "Spin-density-wave order controlled by uniaxial stress in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mrow><mml:mi>CeAuSb</mml:mi></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:math>," Physical Review. B 106, no. 22 (2022), https://doi.org/10.1103/physrevb.106.224415
@article{osti_1907147,
author = {Waite, R. and Orlandi, F. and Sokolov, D. A. and Ribeiro, R. A. and Canfield, P. C. and Manuel, P. and Khalyavin, D. D. and Hicks, C. W. and Hayden, S. M.},
title = {Spin-density-wave order controlled by uniaxial stress in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mrow><mml:mi>CeAuSb</mml:mi></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:math>},
annote = {We report the tetragonal heavy-fermion compound CeAuSb2 (space group P4/nmm ) exhibits incommensurate spin-density wave (SDW) order below TN ≈ 6.5 K with the propagation vector qA = (δA, δA, 1/2 ). The application of uniaxial stress along the [010] direction induces a sudden change in the resistivity ratio ρa/ρb at a compressive strain of ε ≈ - 0.5 %. Here we use neutron scattering to show that the uniaxial stress induces a first-order transition to a SDW state with a different propagation vector (0, δB,1/2) with δB = 0.25.The magnetic structure of the new (B) phase consists of Ce layers with ordered moments alternating with layers with zero moment stacked along the c axis. The ordered layers have an up-up-down-down configuration along the b axis. This is an unusual situation in which the loss of spatial inversion in a metallic system is driven by the magnetic order. We argue that the change in SDW wave vector leads to Fermi-surface reconstruction and a concomitant change in the transport properties.},
doi = {10.1103/physrevb.106.224415},
url = {https://www.osti.gov/biblio/1907147},
journal = {Physical Review. B},
issn = {ISSN 2469-9950},
number = {22},
volume = {106},
place = {United States},
publisher = {American Physical Society (APS)},
year = {2022},
month = {12}}
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; Gordon and Betty Moore Foundation; Engineering and Physical Sciences Research Council (EPSRC)
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 764https://doi.org/10.1016/j.nima.2014.07.029