Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session RR01: V: Multiferroics and Ferroelectrics II
11:30 AM–12:54 PM,
Tuesday, March 21, 2023
Room: Virtual Room 1
Sponsoring
Unit:
DMP
Chair: Lun Jin, Princeton University
Abstract: RR01.00007 : Role of magnetization parameters in designing high-performance spin-driven thermoelectrics*
12:42 PM–12:54 PM
Presenter:
Daryoosh Vashaee
(North Carolina State U)
Authors:
Morteza Jazandari
(Institute for Advanced Studies in Basic Sciences (IASBS))
Jahanfar Abouie
(Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran)
Daryoosh Vashaee
(North Carolina State U)
usually layered materials, can lead to a high thermopower extending to elevated temperatures
deep in the paramagnetic domain. In this regard, the magnitude and temperature dependence
of the short-range order are critical parameters for designing high-performance spin-driven
thermoelectrics, which we discuss in this presentation. Due to the type of the magnetic and
lattice structures and the interactions between the magnetic ions, the short-range order can vary
in amplitude and temperature extension in different lattice directions. Furthermore, such
interactions affect the magnitude of the ordering temperature, which allows the designing of
thermoelectric materials for a target working temperature. We will discuss the material
parameters involved in magnetic semiconductors with sizable short-range order parameters
extending well above the order transition temperature. The results are vital in designing
paramagnetic thermoelectrics with large thermopowers, which has taken increasing attention
recently.
*National Science Foundation (NSF) under grant numbers ECCS-1711253 and CBET-2110603
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