Publication detail

Step-edge assisted large scale FeSe monolayer growth on epitaxial Bi(2)Se(3)thin films

FIKÁČEK, J. PROCHÁZKA, P. STETSOVYCH, V. PRŮŠA, S. VONDRÁČEK, M. KORMOŠ, L. SKÁLA, T. VLAIC, P. CAHA, O. CARVA, K. ČECHAL, J. SPRINGHOLZ, G. HONOLKA, J.

Original Title

Step-edge assisted large scale FeSe monolayer growth on epitaxial Bi(2)Se(3)thin films

Type

journal article in Web of Science

Language

English

Original Abstract

Enhanced superconductivity of FeSe in the 2D limit on oxide surfaces as well as the prediction oftopological superconductivityat the interface to topological insulators makes the fabrication of Fe-chalcogenide monolayers a topic of current interest. So far superconductive properties of the latter are mostly studied by scanning tunneling spectroscopy, which can detect gaps in the local density of states as an indicator for Cooper pairing. Direct macroscopic transport properties, which can prove or falsify a true superconducting phase, are yet widely unexplored due to the difficulty to grow monolayer films with homogeneous material properties on a larger scale. Here we report on a promising route to fabricate micron-scale continuous carpets of monolayer thick FeSe on Bi(2)Se(3)topological insulators. In contrast to previous procedures based on ultraflat bulk Bi(2)Se(3)surfaces, we use molecular beam epitaxy grown Bi(2)Se(3)films with high step-edge densities (terrace widths 10-100 nm). We observe that step edges promote the almost strainless growth of coalescing FeSe domains without compromising the underlying Bi(2)Se(3)crystal structure.

Keywords

Fe-chalcogenides; topological insulators; FeSe; interface superconductivity; unconventional superconductivity

Authors

FIKÁČEK, J.; PROCHÁZKA, P.; STETSOVYCH, V.; PRŮŠA, S.; VONDRÁČEK, M.; KORMOŠ, L.; SKÁLA, T.; VLAIC, P.; CAHA, O.; CARVA, K.; ČECHAL, J.; SPRINGHOLZ, G.; HONOLKA, J.

Released

1. 7. 2020

Publisher

IOP Publishing

Location

BRISTOL

ISBN

1367-2630

Periodical

NEW JOURNAL OF PHYSICS

Year of study

22

Number

7

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

12

Pages count

12

URL

https://iopscience.iop.org/article/10.1088/1367-2630/ab9b59

Full text in the Digital Library

http://hdl.handle.net/11012/196526

BibTex

@article{BUT165349,
  author="Jan {Fikáček} and Pavel {Procházka} and Vitalii {Stetsovych} and Stanislav {Průša} and Martin {Vondráček} and Lukáš {Kormoš} and Tomáš {Skála} and Petru {Vlaic} and Ondřej {Caha} and Karel {Carva} and Jan {Čechal} and Gunther {Springholz} and Jan {Honolka}",
  title="Step-edge assisted large scale FeSe monolayer growth on epitaxial Bi(2)Se(3)thin films",
  journal="NEW JOURNAL OF PHYSICS",
  year="2020",
  volume="22",
  number="7",
  pages="1--12",
  doi="10.1088/1367-2630/ab9b59",
  issn="1367-2630",
  url="https://iopscience.iop.org/article/10.1088/1367-2630/ab9b59"
}