Observation of nuclear-spin Seebeck effect

T. Kikkawa (), D. Reitz, H. Ito, T. Makiuchi, T. Sugimoto, K. Tsunekawa, S. Daimon, K. Oyanagi, R. Ramos, S. Takahashi, Y. Shiomi, Y. Tserkovnyak and E. Saitoh
Additional contact information
T. Kikkawa: The University of Tokyo
D. Reitz: University of California
H. Ito: The University of Tokyo
T. Makiuchi: The University of Tokyo
T. Sugimoto: The University of Tokyo
K. Tsunekawa: The University of Tokyo
S. Daimon: The University of Tokyo
K. Oyanagi: Institute for Materials Research, Tohoku University
R. Ramos: WPI Advanced Institute for Materials Research, Tohoku University
S. Takahashi: WPI Advanced Institute for Materials Research, Tohoku University
Y. Shiomi: The University of Tokyo
Y. Tserkovnyak: University of California
E. Saitoh: The University of Tokyo

Nature Communications, 2021, vol. 12, issue 1, 1-7

Abstract: Abstract Thermoelectric effects have been applied to power generators and temperature sensors that convert waste heat into electricity. The effects, however, have been limited to electrons to occur, and inevitably disappear at low temperatures due to electronic entropy quenching. Here, we report thermoelectric generation caused by nuclear spins in a solid: nuclear-spin Seebeck effect. The sample is a magnetically ordered material MnCO3 having a large nuclear spin (I = 5/2) of 55Mn nuclei and strong hyperfine coupling, with a Pt contact. In the system, we observe low-temperature thermoelectric signals down to 100 mK due to nuclear-spin excitation. Our theoretical calculation in which interfacial Korringa process is taken into consideration quantitatively reproduces the results. The nuclear thermoelectric effect demonstrated here offers a way for exploring thermoelectric science and technologies at ultralow temperatures.

Date: 2021
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-021-24623-6 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-24623-6

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-021-24623-6

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().