Publication detail

Synthesis and characterization of half-Heusler ScPtBi films via three-source magnetron co-sputtering on Nb superconductor buffer layer

POLAT, Ö. HORÁK, M. ARREGI URIBEETXEBARRIA, J. BUKVIŠOVÁ, K. ZLÁMAL, J. ŠIKOLA, T.

Original Title

Synthesis and characterization of half-Heusler ScPtBi films via three-source magnetron co-sputtering on Nb superconductor buffer layer

Type

journal article in Web of Science

Language

English

Original Abstract

The half-Heusler compounds exhibit simultaneous electrical, optical, and magnetic properties hence extensive research efforts have recently been dedicated to their development in diverse applications. Herein, we detail the fabrication and magnetic characterization of thin film ScPtBi was grown at 300 degrees C on Nb-buffered Si (100) single crystals (Nb/Si (100)) by using magnetron co-sputtering. X-ray diffraction examinations have unveiled the polycrystalline growth nature of the films. It is seen that the obtained ScPtBi thin film is strained by 1.4% compared to the single crystal of ScPtBi. The morphological observations, conducted by scanning electron mi-croscopy (SEM), revealed that the Nb buffer layer has a smooth and crack-free surface. Moreover, it has been observed that the Bi islands are formed on the surface of ScPtBi film, which is confirmed by the high-resolution scanning transmission electron microscopy (HR-STEM) analyses. The presence of the weak antilocalization (WAL) effect has been observed in the samples. The Hikami-Larkin-Nagaoka (HLN) equation was used to analyze experimental data, aiming to calculate the phase coherence length (l & phi;) and the coefficient & alpha;. As the temperature increased, the phase coherence length decreased from 39 nm to 24 nm. The coefficient & alpha; was determined to be in the range of 500 to 1100. As a result, it has been concluded that the presence of the WAL effect might be connected to the strong spin-orbit coupling (SOC) nature of the films instead of from topologically protected surface states.

Keywords

The half-Heusler compound; ScPtBi; The weak antilocalization; The strong spin-orbit coupling; Thin film; Nb superconductor buffer layer

Authors

POLAT, Ö.; HORÁK, M.; ARREGI URIBEETXEBARRIA, J.; BUKVIŠOVÁ, K.; ZLÁMAL, J.; ŠIKOLA, T.

Released

1. 8. 2023

Publisher

ELSEVIER

Location

AMSTERDAM

ISBN

2468-0230

Periodical

SURFACES AND INTERFACES

Year of study

40

Number

103118

State

Kingdom of the Netherlands

Pages count

7

URL

https://www.sciencedirect.com/science/article/pii/S2468023023004881?via%3Dihub

BibTex

@article{BUT184677,
  author="Özgür {Polat} and Michal {Horák} and Jon Ander {Arregi Uribeetxebarria} and Kristýna {Bukvišová} and Jakub {Zlámal} and Tomáš {Šikola}",
  title="Synthesis and characterization of half-Heusler ScPtBi films via three-source magnetron co-sputtering on Nb superconductor buffer layer",
  journal="SURFACES AND INTERFACES",
  year="2023",
  volume="40",
  number="103118",
  pages="7",
  doi="10.1016/j.surfin.2023.103118",
  issn="2468-0230",
  url="https://www.sciencedirect.com/science/article/pii/S2468023023004881?via%3Dihub"
}