First-order transition under a magnetic ordered state in SmPtSi2

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10483749" target="_blank" >RIV/00216208:11320/24:10483749 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=4BtOLIE._e" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=4BtOLIE._e</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1402-4896/ad59e0" target="_blank" >10.1088/1402-4896/ad59e0</a>

Result language
angličtina
Original language name
First-order transition under a magnetic ordered state in SmPtSi2
Original language description
We have synthesized polycrystalline and single-crystalline samples of SmPtSi2, and measured their resistivity, specific heat, magnetization, and Seebeck coefficient. The existence of two magnetic phase transitions has been confirmed, one at T-H = 8.6 K and the other T-L = 5.6 K. A hump-type anomaly in resistivity, a lambda-type anomaly in specific heat, a downward bend in magnetization, and a semiconductor-like increase in the Seebeck coefficient were observed at T-H, indicating an antiferromagnetic transition accompanied by a gap opening on the Fermi surface. In contrast, a sharp drop in resistivity, a sharp spike in specific heat, and a drop in magnetization were observed at T-L. The Seebeck coefficient showed metallic temperature dependence below T-L. With increasing pressure, T-H and T-L shifted to higher temperatures. The transition at T-L was no longer observed at pressures above 1.5 GPa. These findings suggest that the transition at T-L is a transition from an antiferromagnetic ordered state with the gap on the Fermi surface to a different antiferromagnetic state.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
<a href="/en/project/LM2023065" target="_blank" >LM2023065: Material growth and measurement laboratory</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)