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pith:6UQDGCK5

pith:2026:6UQDGCK5ZC6VX4ZCFUTN33ALIK
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Partial Kondo Screening Solves the Mystery of Rare Earth Tetraborides

Sanjeev Kumar, Soumyaranjan Dash

Partial Kondo screening in the Kondo lattice model on the Shastry-Sutherland lattice produces the multiple magnetization plateaus seen in rare-earth tetraborides.

arxiv:2605.17469 v1 · 2026-05-17 · cond-mat.str-el · cond-mat.mtrl-sci

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Claims

C1strongest claim

Using a combination of hybrid and semiclassical Monte Carlo simulations of the Kondo lattice model (KLM) on the Shastry-Sutherland lattice (SSL), we find robust magnetization plateaus at fractions 1/6, 2/9, 1/4, 1/3, 1/2, 2/3 and 3/4 of the saturation magnetization. We find that most of the plateau states are partially Kondo screened and emerge from the field-tuning of a complex three-way competition between the kinetic energy, the Kondo coupling, and the magnetic frustration.

C2weakest assumption

The Kondo lattice model on the Shastry-Sutherland lattice, without additional terms such as lattice distortions or further-neighbor interactions, is sufficient to capture the essential low-temperature physics of the rare-earth tetraborides.

C3one line summary

Partial Kondo screening arising from competition between kinetic energy, Kondo coupling, and magnetic frustration in the Kondo lattice model on the Shastry-Sutherland lattice produces robust magnetization plateaus at 1/6, 2/9, 1/4, 1/3, 1/2, 2/3, and 3/4 of saturation in rare-earth tetraborides.

References

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[1] (g) Phase diagram inJ K −h z plane
[2] and singlets (blue circles) of a 12×12 lattice section corresponding to (a) US+N´ eel:m= 1/6,n K = 1/6, (b) UUUS:m= 3/4,n K = 1/4. (c) phase diagram int-h z plane forJ 2/J1 = 1.0 andJ K = 0.90 pronoun
[3] 8 1 0 0 . 2 0 . 4 0 . 6 0 . 8 1 (a) 0 0 . 2 0 . 4 0 . 6 0 . 8 1 −0. 6 −0. 4 −0. 2 0(b) σ xx Bef f t1 = 0. 10 t1 = 0. 25 σ xy Bef f t1 = 0. 10 t1 = 0. 25 Figure 6. Longitudinal (a) and transverse (b) c
[4] The fermionic Hamiltonian is diagonalized using theCHEEVXroutine from the LAPACK library
[5] and singlets (blue circles) of a 12×12 lattice section corresponding to UDS:m= 0,n K = 1/3 11

Formal links

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Receipt and verification
First computed 2026-05-20T00:04:40.531745Z
Builder pith-number-builder-2026-05-17-v1
Signature Pith Ed25519 (pith-v1-2026-05) · public key
Schema pith-number/v1.0

Canonical hash

f52033095dc8bd5bf3222d26ddec0b42b674449fd504ebdc116deab4389a34ca

Aliases

arxiv: 2605.17469 · arxiv_version: 2605.17469v1 · doi: 10.48550/arxiv.2605.17469 · pith_short_12: 6UQDGCK5ZC6V · pith_short_16: 6UQDGCK5ZC6VX4ZC · pith_short_8: 6UQDGCK5
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curl -sH 'Accept: application/ld+json' https://pith.science/pith/6UQDGCK5ZC6VX4ZCFUTN33ALIK \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
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Canonical record JSON
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    "license": "http://creativecommons.org/licenses/by/4.0/",
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    "submitted_at": "2026-05-17T14:17:26Z",
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