Published September 2021 | Version v1
Journal article Metadata-only

Monolayer FeSe films grown on SrTiO3 with controlled surface superstructures studied by scanning probes. Evidence for interface superconductivity

Creators

  • 1. Tokyo Institute of Technology, School of Science, Department of Physics, Tokyo (Japan)

Description

Superconductivity in atomically thin films has attracted great attention, but the superconducting transition temperature Tc is generally lower than that of the bulk. In this respect, the FeSe films grown on SrTiO3 (STO) substrate have attracted much attention because the Tc was reported as high as 40-109 K when the thickness was decreased to a monolayer (single unit cell, 1 UC). Since the Tc of the bulk is only 8 K, this value is much higher and the mechanism of this high-temperature superconductivity has been under intensive study, but has yet to be clarified. In this review, we present our detailed study on this 1 UC FeSe/STO system using two different types of scanning probes. By taking great care of the control of the STO surface, we show that the superconductivity is localized at the interface of FeSe and STO. (author)

Availability note (English)

Available from DOI: https://doi.org/10.35848/1347-4065/abefad

Additional details

Identifiers

DOI
10.35848/1347-4065/abefad;

Publishing Information

Journal Title
Japanese Journal of Applied Physics (Online)
Journal Volume
60
Journal Issue
SE
Journal Page Range
p. SE0801.1-SE0801.5
ISSN
1347-4065

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
53096543
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
ELECTRIC FIELDS; ELECTRON DIFFRACTION; ELECTRON TRANSFER; FERMI LEVEL; HIGH-TC SUPERCONDUCTORS; IRON SELENIDES; PHASE TRANSFORMATIONS; QUANTUM MECHANICS; SCANNING TUNNELING MICROSCOPY; STRONTIUM TITANATES; SUPERCONDUCTIVITY; TEMPERATURE DEPENDENCE; THIN FILMS; TRANSITION TEMPERATURE
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; DIFFRACTION; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ENERGY LEVELS; FILMS; IRON COMPOUNDS; MECHANICS; MICROSCOPY; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SCATTERING; SELENIDES; SELENIUM COMPOUNDS; STRONTIUM COMPOUNDS; SUPERCONDUCTORS; THERMODYNAMIC PROPERTIES; TITANATES; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; TYPE-II SUPERCONDUCTORS

Optional Information

Notes
46 refs., 3 figs.