Broad central line observed in electron spin resonance experiments on hydrogen atom isotopes in solid molecular films of hydrogen isotopes
: Sheludiakov, S.; Ahokas, Janne.; Järvinen, Jarno.; Vasiliev, Sergey.; Wetzel, C. K.; Lee, D. M.; Khmelenko, Vladimir V.
Publisher: AMER PHYSICAL SOC
: COLLEGE PK
: 2024
: Physical Review B
: PHYSICAL REVIEW B
: PHYS REV B
: 224106
: 110
: 22
: 7
: 2469-9950
: 2469-9969
DOI: https://doi.org/10.1103/PhysRevB.110.224106
: https://doi.org/10.1103/PhysRevB.110.224106
: https://research.utu.fi/converis/portal/detail/Publication/477955094
We report on an observation and investigation of a broad central line (BCL) in electron-spin resonance (ESR) studies of hydrogen and tritium atoms embedded in solid molecular films of hydrogen isotopes (H2 and T2) at a temperature of 0.1 K and in a high magnetic field B = 4.6 T. We observed that this broad central line remains in the ESR spectrum after evaporating the hydrogen films and even after heating to T = 150 K but disappears after heating to room temperature. We suggest possible nature of the ESR active centers forming this line.
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This work has been supported by National Science Foundation Grant No. DMR 2104756, the Academy of Finland Grant No. 317141, and the Jenny and Antti Wihuri Foundation.
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