Mott gap collapse in lightly hole-doped Sr(2−x)K(x)IrO(4)

The evolution of Sr(2)IrO(4) upon carrier doping has been a subject of intense interest, due to its similarities to the parent cuprates, yet the intrinsic behaviour of Sr(2)IrO(4) upon hole doping remains enigmatic. Here, we synthesize and investigate hole-doped Sr(2−x)K(x)IrO(4) utilizing a combina...

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Autores principales: Nelson, J. N., Parzyck, C. T., Faeth, B. D., Kawasaki, J. K., Schlom, D. G., Shen, K. M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7244596/
https://www.ncbi.nlm.nih.gov/pubmed/32444617
http://dx.doi.org/10.1038/s41467-020-16425-z
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author Nelson, J. N.
Parzyck, C. T.
Faeth, B. D.
Kawasaki, J. K.
Schlom, D. G.
Shen, K. M.
author_facet Nelson, J. N.
Parzyck, C. T.
Faeth, B. D.
Kawasaki, J. K.
Schlom, D. G.
Shen, K. M.
author_sort Nelson, J. N.
collection PubMed
description The evolution of Sr(2)IrO(4) upon carrier doping has been a subject of intense interest, due to its similarities to the parent cuprates, yet the intrinsic behaviour of Sr(2)IrO(4) upon hole doping remains enigmatic. Here, we synthesize and investigate hole-doped Sr(2−x)K(x)IrO(4) utilizing a combination of reactive oxide molecular-beam epitaxy, substitutional diffusion and in-situ angle-resolved photoemission spectroscopy. Upon hole doping, we observe the formation of a coherent, two-band Fermi surface, consisting of both hole pockets centred at (π, 0) and electron pockets centred at (π/2, π/2). In particular, the strong similarities between the Fermi surface topology and quasiparticle band structure of hole- and electron-doped Sr(2)IrO(4) are striking given the different internal structure of doped electrons versus holes.
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spelling pubmed-72445962020-06-03 Mott gap collapse in lightly hole-doped Sr(2−x)K(x)IrO(4) Nelson, J. N. Parzyck, C. T. Faeth, B. D. Kawasaki, J. K. Schlom, D. G. Shen, K. M. Nat Commun Article The evolution of Sr(2)IrO(4) upon carrier doping has been a subject of intense interest, due to its similarities to the parent cuprates, yet the intrinsic behaviour of Sr(2)IrO(4) upon hole doping remains enigmatic. Here, we synthesize and investigate hole-doped Sr(2−x)K(x)IrO(4) utilizing a combination of reactive oxide molecular-beam epitaxy, substitutional diffusion and in-situ angle-resolved photoemission spectroscopy. Upon hole doping, we observe the formation of a coherent, two-band Fermi surface, consisting of both hole pockets centred at (π, 0) and electron pockets centred at (π/2, π/2). In particular, the strong similarities between the Fermi surface topology and quasiparticle band structure of hole- and electron-doped Sr(2)IrO(4) are striking given the different internal structure of doped electrons versus holes. Nature Publishing Group UK 2020-05-22 /pmc/articles/PMC7244596/ /pubmed/32444617 http://dx.doi.org/10.1038/s41467-020-16425-z Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Nelson, J. N.
Parzyck, C. T.
Faeth, B. D.
Kawasaki, J. K.
Schlom, D. G.
Shen, K. M.
Mott gap collapse in lightly hole-doped Sr(2−x)K(x)IrO(4)
title Mott gap collapse in lightly hole-doped Sr(2−x)K(x)IrO(4)
title_full Mott gap collapse in lightly hole-doped Sr(2−x)K(x)IrO(4)
title_fullStr Mott gap collapse in lightly hole-doped Sr(2−x)K(x)IrO(4)
title_full_unstemmed Mott gap collapse in lightly hole-doped Sr(2−x)K(x)IrO(4)
title_short Mott gap collapse in lightly hole-doped Sr(2−x)K(x)IrO(4)
title_sort mott gap collapse in lightly hole-doped sr(2−x)k(x)iro(4)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7244596/
https://www.ncbi.nlm.nih.gov/pubmed/32444617
http://dx.doi.org/10.1038/s41467-020-16425-z
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