Absence of superconductivity in ultrathin layers of FeSe synthesized on a topological insulator

Andreas Eich; Nils Rollfing; Fabian Arnold; Charlotte Sanders; Pascal R. Ewen; Marco Bianchi; Maciej Dendzik; Matteo Michiardi; Jian-Li Mi; Martin Bremholm; Daniel Wegner; Philip Hofmann; Alexander A. Khajetoorians

doi:10.1103/PhysRevB.94.125437

Absence of superconductivity in ultrathin layers of FeSe synthesized on a topological insulator

Andreas Eich
, Nils Rollfing
, Fabian Arnold
, Charlotte Sanders
, Pascal R. Ewen
, Marco Bianchi
, Maciej Dendzik
, Matteo Michiardi
, Jian-Li Mi
, Martin Bremholm
, Daniel Wegner
, Philip Hofmann
, Alexander A. Khajetoorians

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

22 Citationer (Scopus)

Abstract

The structural and electronic properties of FeSe ultrathin layers on Bi2Se3 have been investigated with a combination of scanning tunneling microscopy and spectroscopy and angle-resolved photoemission spectroscopy. The FeSe multilayers, which are predominantly 3-5 monolayers (MLs) thick, exhibit a hole pocket-like electron band at Γ and a dumbbell-like feature at M, similar to multilayers of FeSe on SrTiO3. Moreover, the topological state of the Bi2Se3 is preserved beneath the FeSe layer, as indicated by a heavily n-doped Dirac cone. Low temperature scanning tunneling spectroscopy does not exhibit a superconducting gap for any investigated thickness down to a temperature of 5 K.

Originalsprog	Engelsk
Artikelnummer	125437
Tidsskrift	Physical Review B
Vol/bind	94
Nummer	12
Sider (fra-til)	125437
Antal sider	1
ISSN	2469-9950
DOI	https://doi.org/10.1103/PhysRevB.94.125437
Status	Udgivet - 26 sep. 2016

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10.1103/PhysRevB.94.125437

http://link.aps.org/doi/10.1103/PhysRevB.94.125437

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Citationsformater

Eich, A., Rollfing, N., Arnold, F., Sanders, C., Ewen, P. R., Bianchi, M., Dendzik, M., Michiardi, M., Mi, J.-L., Bremholm, M., Wegner, D., Hofmann, P., & Khajetoorians, A. A. (2016). Absence of superconductivity in ultrathin layers of FeSe synthesized on a topological insulator. Physical Review B, 94(12), 125437. Artikel 125437. https://doi.org/10.1103/PhysRevB.94.125437

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title = "Absence of superconductivity in ultrathin layers of FeSe synthesized on a topological insulator",

abstract = "The structural and electronic properties of FeSe ultrathin layers on Bi2Se3 have been investigated with a combination of scanning tunneling microscopy and spectroscopy and angle-resolved photoemission spectroscopy. The FeSe multilayers, which are predominantly 3-5 monolayers (MLs) thick, exhibit a hole pocket-like electron band at Γ and a dumbbell-like feature at M, similar to multilayers of FeSe on SrTiO3. Moreover, the topological state of the Bi2Se3 is preserved beneath the FeSe layer, as indicated by a heavily n-doped Dirac cone. Low temperature scanning tunneling spectroscopy does not exhibit a superconducting gap for any investigated thickness down to a temperature of 5 K.",

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T1 - Absence of superconductivity in ultrathin layers of FeSe synthesized on a topological insulator

AU - Eich, Andreas

AU - Rollfing, Nils

AU - Arnold, Fabian

AU - Sanders, Charlotte

AU - Ewen, Pascal R.

AU - Bianchi, Marco

AU - Dendzik, Maciej

AU - Michiardi, Matteo

AU - Mi, Jian-Li

AU - Bremholm, Martin

AU - Wegner, Daniel

AU - Hofmann, Philip

AU - Khajetoorians, Alexander A.

PY - 2016/9/26

Y1 - 2016/9/26

N2 - The structural and electronic properties of FeSe ultrathin layers on Bi2Se3 have been investigated with a combination of scanning tunneling microscopy and spectroscopy and angle-resolved photoemission spectroscopy. The FeSe multilayers, which are predominantly 3-5 monolayers (MLs) thick, exhibit a hole pocket-like electron band at Γ and a dumbbell-like feature at M, similar to multilayers of FeSe on SrTiO3. Moreover, the topological state of the Bi2Se3 is preserved beneath the FeSe layer, as indicated by a heavily n-doped Dirac cone. Low temperature scanning tunneling spectroscopy does not exhibit a superconducting gap for any investigated thickness down to a temperature of 5 K.

AB - The structural and electronic properties of FeSe ultrathin layers on Bi2Se3 have been investigated with a combination of scanning tunneling microscopy and spectroscopy and angle-resolved photoemission spectroscopy. The FeSe multilayers, which are predominantly 3-5 monolayers (MLs) thick, exhibit a hole pocket-like electron band at Γ and a dumbbell-like feature at M, similar to multilayers of FeSe on SrTiO3. Moreover, the topological state of the Bi2Se3 is preserved beneath the FeSe layer, as indicated by a heavily n-doped Dirac cone. Low temperature scanning tunneling spectroscopy does not exhibit a superconducting gap for any investigated thickness down to a temperature of 5 K.

U2 - 10.1103/PhysRevB.94.125437

DO - 10.1103/PhysRevB.94.125437

M3 - Journal article

SN - 2469-9950

VL - 94

SP - 125437

JO - Physical Review B

JF - Physical Review B

IS - 12

M1 - 125437

ER -

Absence of superconductivity in ultrathin layers of FeSe synthesized on a topological insulator

Abstract

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