Magnetocaloric effect and magnetic cooling near a field-induced quantum-critical point
Open accessAbstract
The presence of a quantum-critical point (QCP) can significantly affect the thermodynamic properties of a material at finite temperatures T . This is reflected, e.g., in the entropy landscape S ( T , r ) in the vicinity of a QCP, yielding particularly strong variations for varying the tuning parameter r such as pressure or magnetic field B . Here we report on the determination of the critical enhancement of ∂ S /∂ B near a B -induced QCP via absolute measurements of the magnetocaloric effect (MCE), (∂ T /∂ B ) S and demonstrate that the accumulation of entropy around the QCP can be used for efficient low-temperature magnetic cooling. Our proof of principle is based on measurements and theoretical calculations of the MCE and the cooling performance for a Cu 2+ -containing coordination polymer, which is a very good realization of a spin-½ antiferromagnetic Heisenberg chain—one of the simplest quantum-critical systems.
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The magnetic-field fluctuation in the flat-top region is ±0.005 T, which would only cause a small temperature fluctuation of ±0.002 K even in a material with a large magnetocaloric effect of ∼0.4 K/T, indicating field stability is good enough for the present method.
“It is important to note that the magnetic-field fluctuation in the flattop region is ±0.005T, which would only cause a small temperature fluctuation of ±0.002K even in a material with a large magnetocaloric effect of ∼0.4 K/T such as a magnetic refrigerant material, 40 indicating that the field stability is good enough for the present method.”
From Simultaneous measurement of specific heat and thermal conductivity in pulsed magnetic fields (2023) · cites this paper as [40]
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Research works printed but not linked: 3
- Lounasmaa O V (1974) Experimental Principles And Methods Below 1 K. (Academic Press, New York).
- Sachdev S (1999) Quantum Phase Transitions (Cambridge University Press, Cambridge, England).
- Pobell F (1992) Matter And Methods At Low Temperatures. (Springer Berlin Heidelberg New York).
Cited by
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Simultaneous measurement of specific heat and thermal conductivity in pulsed magnetic fields
Nomoto, T., Zhong, C., Kageyama, H., Suzuki, Y., Jaime, M., Hashimoto, Y., Katsumoto, S., Matsuyama, N., Dong, C., Matsuo, A., et al. (2023) · arXiv · doi:10.48550/arxiv.2302.01627 · Cited by 5 · see citing works
- Authors
- Wolf, B., Tsui, Y., Jaiswal-Nagar, D., Tutsch, U., Honecker, A., Remović-Langer, K., Hofmann, G., Prokofiev, A., Assmus, W., Donath, G., & Lang, M.
- Affiliations
- Goethe University Frankfurt (DE)
- Physics Institute, Goethe-University, Max-von-Laue Strasse 1, 60438 Frankfurt(Main), Germany;
- University of Göttingen (DE)
- TU Wien (AT)
- Max Planck Institute for Chemical Physics of Solids (DE)
- Venue
- Proceedings of the National Academy of Sciences
- Publisher
- National Academy of Sciences
- Published
- 2011-04-08
- Volume
- 108
- Issue
- 17
- Pages
- 6862-6866
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- PMC
- PMC3084140
- OpenAlex
- W2073935308
- Cited by
- 117
- References
- 0
- Citations by year
- 2026: 15 · 2025: 11 · 2024: 8 · 2023: 8 · 2022: 8 · 2021: 12 · 2020: 7 · 2019: 7 · 2018: 3 · 2017: 8 · 2016: 4 · 2015: 4 · 2014: 9 · 2013: 7 · 2012: 4
- FWCI
- 2.81
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Proceedings of the National Academy of Sciences (publishedVersion)
- Europe PMC (PubMed Central) (publishedVersion)
- PubMed Central (publishedVersion)
- HAL (submittedVersion)
- arXiv (Cornell University) (submittedVersion)
- Max Planck Institute for Plasma Physics (submittedVersion)
- Max Planck Digital Library (submittedVersion)
- GRO (submittedVersion)
- MPG.PuRe (Max Planck Society) (submittedVersion)
- arXiv (Cornell University)
- Funders
- Deutsche Forschungsgemeinschaft (SFB/TR 49)
- Topics
- Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Magnetic and transport properties of perovskites and related materials
- Physical Sciences › Physics and Astronomy › Condensed Matter Physics › Advanced Condensed Matter Physics
- Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Magnetism in coordination complexes
- Keywords
- magnetocaloric effect, magnetic refrigeration, quantum critical point, entropy accumulation, coordination polymers, Cu2S, low-temperature refrigeration
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