Organized Structures

Demi̇rel, Yaşar; Gerbaud, Vincent

doi:10.1016/b978-0-444-64112-0.00013-7

Nonequilibrium Thermodynamics 2019

DOI: 10.1016/b978-0-444-64112-0.00013-7

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Organized Structures

Yaşar Demi̇rel¹,

Vincent Gerbaud²

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2024

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“…As we described at the beginning of this article, the Seebeck coefficient is closely linked to the entropy S of the system (see eq ). , The entropy of a mesoscopic system can be estimated using the Boltzmann formula S = k B ln(Ω), where Ω represents the number of all possible microstates of the system. , Here, we assume that Ω contains three main contributions. Ω p represents the conventional distribution of momenta of the electron gas (the electronic band contribution).…”

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confidence: 99%

Impact of Spin-Entropy on the Thermoelectric Properties of a 2D Magnet

Canetta,

Volosheniuk,

Satheesh

et al. 2024

Nano Lett.

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Heat-to-charge conversion efficiency of thermoelectric materials is closely linked to the entropy per charge carrier. Thus, magnetic materials are promising building blocks for highly efficient energy harvesters as their carrier entropy is boosted by a spin degree of freedom. In this work, we investigate how this spinentropy impacts heat-to-charge conversion in the A-type antiferromagnet CrSBr. We perform simultaneous measurements of electrical conductance and thermocurrent while changing magnetic order using the temperature and magnetic field as tuning parameters. We find a strong enhancement of the thermoelectric power factor at around the Neél temperature. We further reveal that the power factor at low temperatures can be increased by up to 600% upon applying a magnetic field. Our results demonstrate that the thermoelectric properties of 2D magnets can be optimized by exploiting the sizable impact of spin-entropy and confirm thermoelectric measurements as a sensitive tool to investigate subtle magnetic phase transitions in low-dimensional magnets.

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confidence: 99%

Impact of Spin-Entropy on the Thermoelectric Properties of a 2D Magnet

Canetta,

Volosheniuk,

Satheesh

et al. 2024

Nano Lett.

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Organized Structures

Cited by 1 publication

References 63 publications

Impact of Spin-Entropy on the Thermoelectric Properties of a 2D Magnet

Impact of Spin-Entropy on the Thermoelectric Properties of a 2D Magnet

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