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<p>Alternative detection strategies are under investigation for the development of innovative devices which exploit the extreme sensitivity of quantum systems. These are considered promising for providing new sensors with frontier performances for applications in fundamental physics research, e.g. for the investigation of dark matter. In this context, we present measurements of magnetization by a superconducting quantum interference device (SQUID) and of <sup>1</sup>H nuclear magnetic resonance (NMR) relaxation that highlight Mn<sub>12</sub><sup>t</sup>BuAc Single Molecule Magnet as a potential quantum sensor for particle detection. Here we show that the magnetization average relaxation time <InlineEquation ID="IEq1"><EquationSource Format="TEX">\({\tau }_{R}\)</EquationSource><EquationSource Format="MATHML"><math><msub><mrow><mi>τ</mi></mrow><mrow><mi>R</mi></mrow></msub></math></EquationSource></InlineEquation>, measured both directly by SQUID and indirectly through NMR echo amplitude, is sensitive to even minimal amounts of ionizing radiation impinging on a single crystal. This distinctive sensitivity is enhanced by the metastable character of the chosen initial magnetic state. Theoretical simulations provide an explanation for the shape of the curves describing the evolution of the magnetization towards equilibrium and for the observed behavior of <InlineEquation ID="IEq2"><EquationSource Format="TEX">\({\tau }_{R}\)</EquationSource><EquationSource Format="MATHML"><math><msub><mrow><mi>τ</mi></mrow><mrow><mi>R</mi></mrow></msub></math></EquationSource></InlineEquation>.</p>

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Exploring the potential of molecular nanomagnets as quantum sensors of radiation

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月29日

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  • Alberto Cini,
  • Lorenzo Sorace,
  • Fabio Santanni,
  • Setareh Fatemi,
  • Francesca Brero,
  • Elio Giroletti,
  • Mauro Merlo,
  • Maria Fittipaldi,
  • Giuseppe Latino,
  • Alessandro Lascialfari,
  • Paolo Santini,
  • Manuel Mariani

摘要

Alternative detection strategies are under investigation for the development of innovative devices which exploit the extreme sensitivity of quantum systems. These are considered promising for providing new sensors with frontier performances for applications in fundamental physics research, e.g. for the investigation of dark matter. In this context, we present measurements of magnetization by a superconducting quantum interference device (SQUID) and of 1H nuclear magnetic resonance (NMR) relaxation that highlight Mn12tBuAc Single Molecule Magnet as a potential quantum sensor for particle detection. Here we show that the magnetization average relaxation time \({\tau }_{R}\)τR, measured both directly by SQUID and indirectly through NMR echo amplitude, is sensitive to even minimal amounts of ionizing radiation impinging on a single crystal. This distinctive sensitivity is enhanced by the metastable character of the chosen initial magnetic state. Theoretical simulations provide an explanation for the shape of the curves describing the evolution of the magnetization towards equilibrium and for the observed behavior of \({\tau }_{R}\)τR.