Investigation of Hf/Ti bilayers for the development of transition-edge sensor microcalorimeters

• Victoria Y. Safonova,
• Anna V. Gordeeva,
• Anton V. Blagodatkin,
• Dmitry A. Pimanov,
• Anton A. Yablokov and
• Andrey L. Pankratov

Beilstein J. Nanotechnol. 2024, 15, 1353–1361, doi:10.3762/bjnano.15.108

• is possible to fabricate microcalorimeters with δE less than 1 eV using these films. Keywords: hafnium; microcalorimeter; neutrino; superconducting transition width; superconductivity; TES; Introduction Over the last two decades, cryogenic microcalorimeters have found applications in various fields

• would allow for the study of the interaction of superfluid helium with neutrinos [3][4]. It is believed that as a result of neutrino scattering from a tritium source on 4He in the superfluid state, excitations with energies in the range of 0.1−10 meV arise in the condensate. There is a non-zero

• recoil energy, the adsorption energy is released, which for the most common metals reaches tens of millielectronvolts, amplifying the signal. Thus, the task of detecting the neutrino spectrum requires microcalorimeters with an energy resolution capable of distinguishing the initial recoil energy