Multi-q Mesoscale Magnetism in CeAuSb2

Guy G. Marcus; Dae-Jeong Kim; Jacob A. Tutmaher; Jose A. Rodriguez-Rivera; Jonas Okkels Birk; Christof Niedermeyer; Hannoh Lee; Zachary Fisk; Collin L.  Broholm

doi:10.1103/PhysRevLett.120.097201

Multi-q Mesoscale Magnetism in CeAuSb2

Guy G. Marcus^*, Dae-Jeong Kim, Jacob A. Tutmaher, Jose A. Rodriguez-Rivera, Jonas Okkels Birk, Christof Niedermeyer, Hannoh Lee, Zachary Fisk, Collin L. Broholm

^*Corresponding author for this work

Department of Physics

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Abstract

We report the discovery of a field driven transition from a single-q to multi-q spin density wave (SDW) in the tetragonal heavy fermion compound CeAuSb2. Polarized along c, the sinusoidal SDW amplitude is 1.8ð2ÞμB/Ce for T ≪ TN ¼ 6.25ð10Þ K with a wave vector q1 ¼ ðη; η; 1/2Þ ½η ¼ 0.136ð2Þ. For Hkc, harmonics appearing at 2q1 evidence a striped magnetic texture below μ∘H1 ¼ 2.78ð1Þ T. Above H1, these are replaced by coupled harmonics at q1 þ q2 ¼ ð2η; 0; 0Þ þ c until μ∘H2 ¼ 5.42ð5Þ T, where satellites vanish and magnetization nonlinearly approaches saturation at 1.64ð2ÞμB/Ce for μ∘H ≈ 7 T.

Original language	English
Article number	097201
Journal	Physical Review Letters
Volume	120
Issue number	9
Number of pages	5
ISSN	0031-9007
DOIs	https://doi.org/10.1103/PhysRevLett.120.097201
Publication status	Published - 2018

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@article{c8df549681264c38a792aebeaadeaf1a,

title = "Multi-q Mesoscale Magnetism in CeAuSb2",

abstract = "We report the discovery of a field driven transition from a single-q to multi-q spin density wave (SDW) in the tetragonal heavy fermion compound CeAuSb2. Polarized along c, the sinusoidal SDW amplitude is 1.8{\dh}2{\TH}μB/Ce for T ≪ TN ¼ 6.25{\dh}10{\TH} K with a wave vector q1 ¼ {\dh}η; η; 1/2{\TH} ½η ¼ 0.136{\dh}2{\TH}. For Hkc, harmonics appearing at 2q1 evidence a striped magnetic texture below μ∘H1 ¼ 2.78{\dh}1{\TH} T. Above H1, these are replaced by coupled harmonics at q1 {\th} q2 ¼ {\dh}2η; 0; 0{\TH} {\th} c until μ∘H2 ¼ 5.42{\dh}5{\TH} T, where satellites vanish and magnetization nonlinearly approaches saturation at 1.64{\dh}2{\TH}μB/Ce for μ∘H ≈ 7 T.",

author = "Marcus, {Guy G.} and Dae-Jeong Kim and Tutmaher, {Jacob A.} and Rodriguez-Rivera, {Jose A.} and Birk, {Jonas Okkels} and Christof Niedermeyer and Hannoh Lee and Zachary Fisk and Broholm, {Collin L.}",

year = "2018",

doi = "10.1103/PhysRevLett.120.097201",

language = "English",

volume = "120",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

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T1 - Multi-q Mesoscale Magnetism in CeAuSb2

AU - Marcus, Guy G.

AU - Kim, Dae-Jeong

AU - Tutmaher, Jacob A.

AU - Rodriguez-Rivera, Jose A.

AU - Birk, Jonas Okkels

AU - Niedermeyer, Christof

AU - Lee, Hannoh

AU - Fisk, Zachary

AU - Broholm, Collin L.

PY - 2018

Y1 - 2018

N2 - We report the discovery of a field driven transition from a single-q to multi-q spin density wave (SDW) in the tetragonal heavy fermion compound CeAuSb2. Polarized along c, the sinusoidal SDW amplitude is 1.8ð2ÞμB/Ce for T ≪ TN ¼ 6.25ð10Þ K with a wave vector q1 ¼ ðη; η; 1/2Þ ½η ¼ 0.136ð2Þ. For Hkc, harmonics appearing at 2q1 evidence a striped magnetic texture below μ∘H1 ¼ 2.78ð1Þ T. Above H1, these are replaced by coupled harmonics at q1 þ q2 ¼ ð2η; 0; 0Þ þ c until μ∘H2 ¼ 5.42ð5Þ T, where satellites vanish and magnetization nonlinearly approaches saturation at 1.64ð2ÞμB/Ce for μ∘H ≈ 7 T.

AB - We report the discovery of a field driven transition from a single-q to multi-q spin density wave (SDW) in the tetragonal heavy fermion compound CeAuSb2. Polarized along c, the sinusoidal SDW amplitude is 1.8ð2ÞμB/Ce for T ≪ TN ¼ 6.25ð10Þ K with a wave vector q1 ¼ ðη; η; 1/2Þ ½η ¼ 0.136ð2Þ. For Hkc, harmonics appearing at 2q1 evidence a striped magnetic texture below μ∘H1 ¼ 2.78ð1Þ T. Above H1, these are replaced by coupled harmonics at q1 þ q2 ¼ ð2η; 0; 0Þ þ c until μ∘H2 ¼ 5.42ð5Þ T, where satellites vanish and magnetization nonlinearly approaches saturation at 1.64ð2ÞμB/Ce for μ∘H ≈ 7 T.

U2 - 10.1103/PhysRevLett.120.097201

DO - 10.1103/PhysRevLett.120.097201

M3 - Journal article

C2 - 29547324

SN - 0031-9007

VL - 120

JO - Physical Review Letters

JF - Physical Review Letters

IS - 9

M1 - 097201

ER -

Multi-q Mesoscale Magnetism in CeAuSb2

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