UNDI: An open-source library to simulate muon-nuclear interactions in solids

Bonfà, Pietro; Frassineti, Jonathan; Isah, Muhammad Maikudi; Onuorah, Ifeanyi John; Sanna, Samuele

doi:10.1016/j.cpc.2020.107719

Cited by 2 publications

(2 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…( 1), we proceed to compute the time-dependent muon polarization numerically. For the A15 compounds the internuclear dipolar interactions can be safely neglected [52] thus allowing the adoption of the approach proposed by Celio [26,27] and implemented in the publicly available code UNDI [53], which makes the estimate very quick. Our calculations consider only the effect of the nearest nuclei, but it has recently been shown by some of us [18] how to effectively include the effect of farther nuclei with an appropriate rescaling of a second nearest-neighbor interaction, allowing a substantial reduction of the otherwise PHYSICAL REVIEW LETTERS 129, 097205 (2022) 097205-3 exponentially diverging dimension of the Hilbert space.…”

mentioning

confidence: 99%

Entanglement between Muon and I>12 Nuclear Spins as a Probe of Charge Environment

Bonfà

Frassineti²,

Wilkinson³

et al. 2022

Phys. Rev. Lett.

Self Cite

View full text Add to dashboard Cite

We report on the first example of quantum coherence between the spins of muons and quadrupolar nuclei. We reveal that these entangled states are highly sensitive to a local charge environment and thus, can be deployed as a functional quantum sensor of that environment. The quantum coherence effect was observed in vanadium intermetallic compounds which adopt the A15 crystal structure, and whose members include all technologically pertinent superconductors. Furthermore, the extreme sensitivity of the entangled states to the local structural and electronic environments emerges through the quadrupolar interaction with the electric field gradient due to the charge distribution at the nuclear (I > 1 2 ) sites. This case study demonstrates that positive muons can be used as a quantum sensing tool to also probe structural and chargerelated phenomena in materials, even in the absence of magnetic degrees of freedom.

show abstract

mentioning

confidence: 99%

Entanglement between Muon and I>12 Nuclear Spins as a Probe of Charge Environment

Bonfà

Frassineti²,

Wilkinson³

et al. 2022

Phys. Rev. Lett.

Self Cite

View full text Add to dashboard Cite

show abstract

“…1, we proceed to compute the time-dependent muon polarization numerically. For the A15 compounds the inter-nuclear dipolar interactions can be safely neglected [38] thus allowing the adoption of the approach proposed by Celio [39,40] and implemented in the publicly available code UNDI [41], which makes the estimate very quick. Our calculations consider only effect of the nearest nuclei, but it has recently been shown by some of us [17] how to effectively include the effect of farther nuclei with an appropriate re-scaling of second nearest neighbors interaction, allowing a substantial reduction of the otherwise exponentially diverging dimension of the Hilbert space.…”

mentioning

confidence: 99%

Entanglement between a muon spin and $I>\frac{1}{2}$ nuclear spins

Bonfà¹,

Frassineti²,

Wilkinson³

et al. 2022

Preprint

Self Cite

View full text Add to dashboard Cite

We report on the first example of quantum coherence between the spins of muons and quadrupolar nuclei. We observe this effect in vanadium intermetallic compounds which adopt the A15 crystal structure, and whose members include all technologically dominant superconductors. The entangled states are extremely sensitive to the local structural and electronic environments through the electric field gradient at the quadrupolar nuclei. This case-study demonstrates that positive muons can be used as a quantum sensing tool to probe also structural and charge related phenomena in materials, even in the absence of magnetic order.

show abstract

UNDI: An open-source library to simulate muon-nuclear interactions in solids

Cited by 2 publications

References 47 publications

Entanglement between Muon and I>12 Nuclear Spins as a Probe of Charge Environment

Entanglement between Muon and I>12 Nuclear Spins as a Probe of Charge Environment

Entanglement between a muon spin and $I>\frac{1}{2}$ nuclear spins

Contact Info

Product

Resources

About