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Open Quantum Systems Decoherence Superconducting Qubits

Superconductivity near itinerant ferromagnetic quantum criticality.

PubMed
Authors: Wang Z, Mao W, Bedell K

Year

2001

Paper ID

13206

Status

Peer-reviewed

Abstract Read

~2 min

Abstract Words

107

Citations

65

Abstract

Superconductivity mediated by spin fluctuations in weak and nearly ferromagnetic metals is studied close to the zero-temperature magnetic transition. We solve analytically the Eliashberg equations for p-wave pairing and obtain the quasiparticle self-energy and the superconducting transition temperature T(c) as a function of the distance to the quantum critical point (QCP). We show that the reduction of quasiparticle coherence and lifetime due to scattering by quasistatic spin fluctuations is the dominant pair-breaking process, which leads to a rapid suppression of T(c) to a nonzero value near the QCP. We point out the differences and similarities of the problem to that of paramagnetic impurities in superconductors.

Why This Paper Matters

  • This paper contributes to the Superconducting Qubits research area in the Quantum Articles archive.
  • It adds a 2001 reference point for readers tracking recent quantum research.
  • Superconductivity mediated by spin fluctuations in weak and nearly ferromagnetic metals is studied close to the zero-temperature magnetic transition.

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References & Citation Signals

[1] DOI https://doi.org/10.1103/PhysRevLett.87.257001 [2] Publisher https://pubmed.ncbi.nlm.nih.gov/11736599/

Local Citation Graph (Related-Paper Links)

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External citation index: OpenAlex citation signal • updated 2026-10-23 17:07:09

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