<p>Neutrinoless double-beta decay (0<InlineEquation ID="IEq3"> <EquationSource Format="TEX">$\nu \beta \beta$</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>ν</mi> <mi>β</mi> <mi>β</mi> </mrow> </math></EquationSource> </InlineEquation>) experiments constitute a pivotal probe for elucidating the characteristics of neutrinos and further discovering new physics. Compared to the neutron transmutation-doped germanium thermistors used in 0<InlineEquation ID="IEq4"> <EquationSource Format="TEX">$\nu \beta \beta$</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>ν</mi> <mi>β</mi> <mi>β</mi> </mrow> </math></EquationSource> </InlineEquation> experiments such as CUORE, transition edge sensors (TESs) theoretically have a relatively faster response time and higher energy resolution. These make TES detectors good choice for next generation 0<InlineEquation ID="IEq5"> <EquationSource Format="TEX">$\nu \beta \beta$</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>ν</mi> <mi>β</mi> <mi>β</mi> </mrow> </math></EquationSource> </InlineEquation> experiments. In this paper, AlMn alloy superconducting films, the main components of TES, were prepared and studied. The relationship between critical temperature (<InlineEquation ID="IEq6"> <EquationSource Format="TEX">$T_{\text{c}}$</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>T</mi> <mtext>c</mtext> </msub> </math></EquationSource> </InlineEquation>) and annealing temperature was established, and the impact of magnetic field on <InlineEquation ID="IEq7"> <EquationSource Format="TEX">$T_{\text{c}}$</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>T</mi> <mtext>c</mtext> </msub> </math></EquationSource> </InlineEquation> was tested. The experimental results demonstrate that the <InlineEquation ID="IEq8"> <EquationSource Format="TEX">$T_{\text{c}}$</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>T</mi> <mtext>c</mtext> </msub> </math></EquationSource> </InlineEquation> of AlMn film can be tuned in the required range of 10–20 mK by using the above methods, which is a key step for the application of AlMn TES in 0<InlineEquation ID="IEq9"> <EquationSource Format="TEX">$\nu \beta \beta$</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>ν</mi> <mi>β</mi> <mi>β</mi> </mrow> </math></EquationSource> </InlineEquation> experiment. In the test range, the <InlineEquation ID="IEq10"> <EquationSource Format="TEX">$T_{\text{c}}$</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>T</mi> <mtext>c</mtext> </msub> </math></EquationSource> </InlineEquation> of AlMn film is sensitive to out-of-plane magnetic field but not to the in-plane magnetic field. Furthermore, we find that a higher annealing temperature results in a more uniform distribution of Mn ions in depth, which opens a new avenue for elucidating the underlying mechanism for tuning <InlineEquation ID="IEq11"> <EquationSource Format="TEX">$T_{\text{c}}$</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>T</mi> <mtext>c</mtext> </msub> </math></EquationSource> </InlineEquation>.</p>

Fabrication and Characterization of AlMn Alloy Superconducting Films for 0$\nu \beta \beta$ Experiments

期刊论文
发表日期：

2025年10月28日

查看全文

Zhouhui Liu,
Yifei Zhang,
Yu Xu,
Mengxian Zhang,
Qing Yu,
Xufang Li,
He Gao,
Zhengwei Li,
Daikang Yan,
Shibo Shu,
Yongjie Zhang,
Xuefeng Lu,
Yu Wang,
Jianjie Zhang,
Yuanyuan Liu,
Congzhan Liu

摘要

Neutrinoless double-beta decay (0 $\nu \beta \beta$ $ν β β$ ) experiments constitute a pivotal probe for elucidating the characteristics of neutrinos and further discovering new physics. Compared to the neutron transmutation-doped germanium thermistors used in 0 $\nu \beta \beta$ $ν β β$ experiments such as CUORE, transition edge sensors (TESs) theoretically have a relatively faster response time and higher energy resolution. These make TES detectors good choice for next generation 0 $\nu \beta \beta$ $ν β β$ experiments. In this paper, AlMn alloy superconducting films, the main components of TES, were prepared and studied. The relationship between critical temperature ( $T_{\text{c}}$ $T_{c}$ ) and annealing temperature was established, and the impact of magnetic field on $T_{\text{c}}$ $T_{c}$ was tested. The experimental results demonstrate that the $T_{\text{c}}$ $T_{c}$ of AlMn film can be tuned in the required range of 10–20 mK by using the above methods, which is a key step for the application of AlMn TES in 0 $\nu \beta \beta$ $ν β β$ experiment. In the test range, the $T_{\text{c}}$ $T_{c}$ of AlMn film is sensitive to out-of-plane magnetic field but not to the in-plane magnetic field. Furthermore, we find that a higher annealing temperature results in a more uniform distribution of Mn ions in depth, which opens a new avenue for elucidating the underlying mechanism for tuning $T_{\text{c}}$ $T_{c}$ .

Fabrication and Characterization of AlMn Alloy Superconducting Films for 0\(\nu \beta \beta\) Experiments

摘要