Extreme enhancement of superconductivity in epitaxial aluminum near the monolayer limit

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Extreme enhancement of superconductivity in epitaxial aluminum near the monolayer limit. / van Weerdenburg, Werner M. J.; Kamlapure, Anand; Fyhn, Eirik Holm; Huang, Xiaochun; van Mullekom, Niels P. E.; Steinbrecher, Manuel; Krogstrup, Peter; Linder, Jacob; Khajetoorians, Alexander Ako.

I: Science Advances, Bind 9, Nr. 9, 5500, 03.03.2023.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt

Harvard

van Weerdenburg, WMJ, Kamlapure, A, Fyhn, EH, Huang, X, van Mullekom, NPE, Steinbrecher, M, Krogstrup, P, Linder, J & Khajetoorians, AA 2023, 'Extreme enhancement of superconductivity in epitaxial aluminum near the monolayer limit', Science Advances, bind 9, nr. 9, 5500. https://doi.org/10.1126/sciadv.adf5500

APA

van Weerdenburg, W. M. J., Kamlapure, A., Fyhn, E. H., Huang, X., van Mullekom, N. P. E., Steinbrecher, M., Krogstrup, P., Linder, J., & Khajetoorians, A. A. (2023). Extreme enhancement of superconductivity in epitaxial aluminum near the monolayer limit. Science Advances, 9(9), [5500]. https://doi.org/10.1126/sciadv.adf5500

Vancouver

van Weerdenburg WMJ, Kamlapure A, Fyhn EH, Huang X, van Mullekom NPE, Steinbrecher M o.a. Extreme enhancement of superconductivity in epitaxial aluminum near the monolayer limit. Science Advances. 2023 mar. 3;9(9). 5500. https://doi.org/10.1126/sciadv.adf5500

Author

van Weerdenburg, Werner M. J. ; Kamlapure, Anand ; Fyhn, Eirik Holm ; Huang, Xiaochun ; van Mullekom, Niels P. E. ; Steinbrecher, Manuel ; Krogstrup, Peter ; Linder, Jacob ; Khajetoorians, Alexander Ako. / Extreme enhancement of superconductivity in epitaxial aluminum near the monolayer limit. I: Science Advances. 2023 ; Bind 9, Nr. 9.

Bibtex

@article{56f1efc36825499785c917625403302d,
title = "Extreme enhancement of superconductivity in epitaxial aluminum near the monolayer limit",
abstract = "BCS theory has been widely successful at describing elemental bulk superconductors. Yet, as the length scales of such superconductors approach the atomic limit, dimensionality as well as the environment of the supercon-ductor can lead to drastically different and unpredictable superconducting behavior. Here, we report a threefold enhancement of the superconducting critical temperature and gap size in ultrathin epitaxial Al films on Si(111), when approaching the 2D limit, based on high-resolution scanning tunneling microscopy/spectroscopy (STM/ STS) measurements. Using spatially resolved spectroscopy, we characterize the vortex structure in the presence of a strong Zeeman field and find evidence of a paramagnetic Meissner effect originating from odd-frequency pairing contributions. These results illustrate two notable influences of reduced dimensionality on a BCS super-conductor and present a platform to study BCS superconductivity in large magnetic fields.",
keywords = "ENERGY-GAP, SPIN POLARIZATION, CRITICAL FIELD, FILMS, TEMPERATURE, TRANSITION, INTERFACES",
author = "{van Weerdenburg}, {Werner M. J.} and Anand Kamlapure and Fyhn, {Eirik Holm} and Xiaochun Huang and {van Mullekom}, {Niels P. E.} and Manuel Steinbrecher and Peter Krogstrup and Jacob Linder and Khajetoorians, {Alexander Ako}",
year = "2023",
month = mar,
day = "3",
doi = "10.1126/sciadv.adf5500",
language = "English",
volume = "9",
journal = "Science advances",
issn = "2375-2548",
publisher = "American Association for the Advancement of Science",
number = "9",

}

RIS

TY - JOUR

T1 - Extreme enhancement of superconductivity in epitaxial aluminum near the monolayer limit

AU - van Weerdenburg, Werner M. J.

AU - Kamlapure, Anand

AU - Fyhn, Eirik Holm

AU - Huang, Xiaochun

AU - van Mullekom, Niels P. E.

AU - Steinbrecher, Manuel

AU - Krogstrup, Peter

AU - Linder, Jacob

AU - Khajetoorians, Alexander Ako

PY - 2023/3/3

Y1 - 2023/3/3

N2 - BCS theory has been widely successful at describing elemental bulk superconductors. Yet, as the length scales of such superconductors approach the atomic limit, dimensionality as well as the environment of the supercon-ductor can lead to drastically different and unpredictable superconducting behavior. Here, we report a threefold enhancement of the superconducting critical temperature and gap size in ultrathin epitaxial Al films on Si(111), when approaching the 2D limit, based on high-resolution scanning tunneling microscopy/spectroscopy (STM/ STS) measurements. Using spatially resolved spectroscopy, we characterize the vortex structure in the presence of a strong Zeeman field and find evidence of a paramagnetic Meissner effect originating from odd-frequency pairing contributions. These results illustrate two notable influences of reduced dimensionality on a BCS super-conductor and present a platform to study BCS superconductivity in large magnetic fields.

AB - BCS theory has been widely successful at describing elemental bulk superconductors. Yet, as the length scales of such superconductors approach the atomic limit, dimensionality as well as the environment of the supercon-ductor can lead to drastically different and unpredictable superconducting behavior. Here, we report a threefold enhancement of the superconducting critical temperature and gap size in ultrathin epitaxial Al films on Si(111), when approaching the 2D limit, based on high-resolution scanning tunneling microscopy/spectroscopy (STM/ STS) measurements. Using spatially resolved spectroscopy, we characterize the vortex structure in the presence of a strong Zeeman field and find evidence of a paramagnetic Meissner effect originating from odd-frequency pairing contributions. These results illustrate two notable influences of reduced dimensionality on a BCS super-conductor and present a platform to study BCS superconductivity in large magnetic fields.

KW - ENERGY-GAP

KW - SPIN POLARIZATION

KW - CRITICAL FIELD

KW - FILMS

KW - TEMPERATURE

KW - TRANSITION

KW - INTERFACES

U2 - 10.1126/sciadv.adf5500

DO - 10.1126/sciadv.adf5500

M3 - Journal article

C2 - 36857452

VL - 9

JO - Science advances

JF - Science advances

SN - 2375-2548

IS - 9

M1 - 5500

ER -

ID: 344327467