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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2509.18019 |
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| _version_ | 1866912692715913216 |
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| author | Gómez-Torres, Hugo Molina-Ruiz, Manel Privitera, Simone Menéndez, Enric Abad, Llibertat Sort, Jordi Bourgeois, Olivier Rodriguez-Viejo, Javier Lopeandia, Aitor |
| author_facet | Gómez-Torres, Hugo Molina-Ruiz, Manel Privitera, Simone Menéndez, Enric Abad, Llibertat Sort, Jordi Bourgeois, Olivier Rodriguez-Viejo, Javier Lopeandia, Aitor |
| contents | We introduce a nanocalorimetric technique based on microsecond-pulsed heating (μs-PHnC) that enables high-sensitivity, quasi-isothermal heat capacity measurements on nanoscale samples. Such resolution is critical for exploring thermodynamic signatures in low-dimensional materials, where conventional techniques fall short. By confining thermal excitation to microsecond timescales, this approach minimizes lateral heat diffusion, reduces heat capacity addenda to below 10^{-9} J K^{-1}, and achieves noise densities as low as 75 pJ K^{-1} Hz^{-1/2} mm^{-2}, unlocking precise thermodynamic characterization of subnanogram samples in areas as small as 30 x 30 μm^{2}. The method delivers exceptional temperature homogeneity, as demonstrated by resolving sharp phase transitions, such as the antiferromagnetic transition in ultrathin CoO films, with unprecedented clarity. Its quasi-static operation is inherently compatible with external stimuli, including magnetic and electric fields, thereby expanding its utility for in-operando thermodynamic studies. This advancement establishes a robust and scalable platform for probing thermal phenomena in nanostructured and low-dimensional materials, significantly broadening the scope of nanocalorimetry. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_18019 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Microsecond-Pulsed Nanocalorimetry: A Scalable Approach for Ultrasensitive Heat Capacity Measurements Gómez-Torres, Hugo Molina-Ruiz, Manel Privitera, Simone Menéndez, Enric Abad, Llibertat Sort, Jordi Bourgeois, Olivier Rodriguez-Viejo, Javier Lopeandia, Aitor Materials Science Mesoscale and Nanoscale Physics We introduce a nanocalorimetric technique based on microsecond-pulsed heating (μs-PHnC) that enables high-sensitivity, quasi-isothermal heat capacity measurements on nanoscale samples. Such resolution is critical for exploring thermodynamic signatures in low-dimensional materials, where conventional techniques fall short. By confining thermal excitation to microsecond timescales, this approach minimizes lateral heat diffusion, reduces heat capacity addenda to below 10^{-9} J K^{-1}, and achieves noise densities as low as 75 pJ K^{-1} Hz^{-1/2} mm^{-2}, unlocking precise thermodynamic characterization of subnanogram samples in areas as small as 30 x 30 μm^{2}. The method delivers exceptional temperature homogeneity, as demonstrated by resolving sharp phase transitions, such as the antiferromagnetic transition in ultrathin CoO films, with unprecedented clarity. Its quasi-static operation is inherently compatible with external stimuli, including magnetic and electric fields, thereby expanding its utility for in-operando thermodynamic studies. This advancement establishes a robust and scalable platform for probing thermal phenomena in nanostructured and low-dimensional materials, significantly broadening the scope of nanocalorimetry. |
| title | Microsecond-Pulsed Nanocalorimetry: A Scalable Approach for Ultrasensitive Heat Capacity Measurements |
| topic | Materials Science Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2509.18019 |