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Revealing the intrinsic transport properties of antiperovskite Sr3SnO thin films

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/5.0128316· OSTI ID:1901960
A topologically non-trivial band structure and reports of superconductivity have motivated significant investigation into the transport properties of the antiperovskite oxide Sr3SnO. Phase-pure films of Sr3SnO can be grown by molecular beam epitaxy, but they do not have the required extremely high hole-doping densities (>1 × 1021 cm–3) for which superconductivity has been observed in bulk materials. To date, high hole-doping densities have been achieved via inducing strontium deficiency, which inevitably results in impurity phases. Here, we show that indium acts as an effective hole dopant in Sr3SnO and can be used to achieve high hole doping densities in stoichiometric films. Films with carrier densities as high as 1.5 × 1021 cm–3 remain non-superconducting. We, therefore, suggest that Sr3SnO is probably not an intrinsic superconductor. A second question addressed in this work is the measurement of the intrinsic electrical transport properties of Sr3SnO, given its rapid degradation in air. We show that even in inert atmospheres, reducing the time needed for establishing electrical contacts and protecting the Sr3SnO film result in improved electrical properties. Here, we demonstrate low carrier density films (4 × 1018 cm–3) with carrier mobilities of 400 cm2 V–1 s–1 at 10 K.
Research Organization:
Univ. of California, Santa Barbara, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0020305
OSTI ID:
1901960
Alternate ID(s):
OSTI ID: 1902466
Journal Information:
Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 23 Vol. 121; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

References (24)

Realization of Epitaxial Thin Films of the Topological Crystalline Insulator Sr 3 SnO journal July 2020
Übergangsformen zwischen zintlphasen und echten salzen: Die verbindungen A3BO (MIT A = Ca, Sr, Ba und B = Sn, Pb) journal December 1980
Weak localization in thin films journal May 1984
First-principles study of mechanical, thermodynamic, transport and superconducting properties of Sr3SnO journal January 2018
Theoretical band structure of the superconducting antiperovskite oxide S r 3 − x SnO journal May 2018
Square pyramidal clusters in La3In5 and Y3In5. La3In5 as a metallic Zintl phase journal January 1995
Synthesis, Structure, and Bonding of Two Lanthanum Indium Germanides with Novel Structures and Properties journal January 1996
Superconductivity in the antiperovskite Dirac-metal oxide Sr3−xSnO journal December 2016
Robust weak antilocalization due to spin-orbital entanglement in Dirac material Sr3SnO journal March 2020
Evolution of Superconductivity with Sr-Deficiency in Antiperovskite Oxide Sr3−xSnO journal February 2019
Molecular beam epitaxy of phase-pure antiperovskite Sr3SnO thin films journal October 2021
Controlled synthesis of the antiperovskite oxide superconductor Sr 3− x SnO journal April 2018
Electrons and Phonons book January 2001
Penetration depth and gap structure in the antiperovskite oxide superconductor Sr 3 − x SnO revealed by μ SR journal May 2020
Higher-order topological insulators in antiperovskites journal June 2020
Spin-polarized electronic states and atomic reconstructions at antiperovskite Sr3SnO(001) polar surfaces journal July 2021
Topological crystalline insulators and Dirac octets in antiperovskites journal August 2014
Type-II Dirac surface states in topological crystalline insulators journal January 2017
ARPES studies of the inverse perovskite Ca 3 PbO : Experimental confirmation of a candidate 3D Dirac fermion system journal October 2017
Planar Hall effect with sixfold oscillations in a Dirac antiperovskite journal March 2021
Topological Crystalline Materials of J = 3 / 2 Electrons: Antiperovskites, Dirac Points, and High Winding Topological Superconductivity journal November 2018
Tilting structures in inverse perovskites, M 3 Tt O ( M = Ca, Sr, Ba, Eu; Tt = Si, Ge, Sn, Pb) journal May 2015
Three-Dimensional Dirac Electrons at the Fermi Energy in Cubic Inverse Perovskites: Ca 3 PbO and Its Family journal August 2011
Low-Energy Effective Hamiltonian and the Surface States of Ca 3 PbO journal June 2012

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