Pith Number

pith:YOOWMIGY

pith:2026:YOOWMIGYOK562GH6D6NA5H5K56

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Competing Effect of Biquadratic and Heisenberg Coupling on Magnetic Tunnel Junction Molecular Spintronics Devices

Andoniaina Mariah Randriambololona, Andrew Grizzle, Christopher DAngelo, Eva Mutunga, Hayden Brown, Pawan Tyagi

Biquadratic coupling plays a secondary role to Heisenberg coupling in stabilizing magnetization of molecular spintronics devices.

arxiv:2605.12885 v1 · 2026-05-13 · cond-mat.stat-mech

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\pithnumber{YOOWMIGYOK562GH6D6NA5H5K56}

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4 Citations open

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The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

These results show that BQC plays a secondary role in magnetization dynamics and cannot overcome the stronger stabilizing effect of HC. The presence of BQC offers a plausible explanation for experimentally observed magnetic phase orientations beyond simple parallel and antiparallel states in MTJMSDs.

C2weakest assumption

The three-dimensional Heisenberg model with the chosen coupling parameters and boundary conditions accurately represents the real physical behavior of molecular spin channels along the MTJ edge.

C3one line summary

Monte Carlo simulations show Heisenberg coupling dominates magnetization dynamics over biquadratic coupling in MTJMSDs and stabilizes magnetic states.

References

19 extracted · 19 resolved · 0 Pith anchors

[1] Kartsev, A., et al., Biquadratic exchange interactions in two-dimensional magnets. npj Computational Materials,

[2] Tyagi, P., C. Baker, and C. D'Angelo, Paramagnetic molecule induced strong antiferromagnetic exchange coupling on a magnetic tunnel junction based molecular spintronics device. Nanotechnology, 2015. 2 2015

[3] Tyagi, P., et al., Molecular coupling competing with defects within insulator of the magnetic tunnel junction - based molecular spintronics devices. Sci Rep, 2021. 11(1): p. 17128 2021

[4] Tyagi, P., Molecular Spin Devices: Current Understanding and New Territories. Nano, 2011. 04(06): p. 325-338 2011

[5] Maciel, N., et al., Magnetic Tunnel Junction Applications. Sensors (Basel), 2019. 20(1) 2019

Receipt and verification

First computed	2026-05-18T03:09:10.975274Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c39d6620d872bbed18fe1f9a0e9faaef85e13bd0fb18aa17e8e07e35e1f5c90b

Aliases

arxiv: 2605.12885 · arxiv_version: 2605.12885v1 · doi: 10.48550/arxiv.2605.12885 · pith_short_12: YOOWMIGYOK56 · pith_short_16: YOOWMIGYOK562GH6 · pith_short_8: YOOWMIGY

Agent API

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/YOOWMIGYOK562GH6D6NA5H5K56 \
  | 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())"
# expect: c39d6620d872bbed18fe1f9a0e9faaef85e13bd0fb18aa17e8e07e35e1f5c90b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91c5866d220d098b3fee5a18da9c768a752928a7dd22016cfa3af06ebcb34789",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cond-mat.stat-mech",
    "submitted_at": "2026-05-13T02:00:27Z",
    "title_canon_sha256": "598da805201bd5dbadaf826c0b35e34792e08c535b57466f07985da0472a4216"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.12885",
    "kind": "arxiv",
    "version": 1
  }
}