Gradual emergence of superconductivity in underdoped La2-x Srx CuO4

Ana Elena Ţuţueanu; MacHteld E. Kamminga; Tim B. Tejsner; Henrik Jacobsen; Henriette W. Hansen; Monica Elisabeta Lǎcǎtuşu; Jacob Baas; Kira L. Eliasen; Jean Claude Grivel; Yasmine Sassa; Niels Bech Christensen; Paul Steffens; Martin Boehm; Andrea Piovano; Kim Lefmann; Astrid T. Rømer

doi:10.1103/PhysRevB.107.174514

Gradual emergence of superconductivity in underdoped La2-x Srx CuO4

Ana Elena Ţuţueanu, MacHteld E. Kamminga, Tim B. Tejsner, Henrik Jacobsen, Henriette W. Hansen, Monica Elisabeta Lǎcǎtuşu, Jacob Baas, Kira L. Eliasen, Jean Claude Grivel, Yasmine Sassa, Niels Bech Christensen, Paul Steffens, Martin Boehm, Andrea Piovano, Kim Lefmann, Astrid T. Rømer

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

We present triple-axis neutron scattering studies of low-energy magnetic fluctuations in strongly underdoped La2-xSrxCuO4 with x=0.05, 0.06 and 0.07, providing quantitative evidence for a direct competition between these fluctuations and superconductivity. At dopings x=0.06 and x=0.07, three-dimensional superconductivity is found, while only a very weak signature of two-dimensional superconductivity residing in the CuO2 planes is detectable for x=0.05. We find a surprising suppression of the low-energy fluctuations by an external magnetic field at all three dopings. This implies that the response of two-dimensional superconductivity to a magnetic field is similar to that of a bulk superconductor. Our results provide direct evidence of a very gradual onset of superconductivity in cuprates.

Original language	English
Article number	174514
Journal	Physical Review B
Volume	107
Issue number	17
ISSN	2469-9950
DOIs	https://doi.org/10.1103/PhysRevB.107.174514
Publication status	Published - 1 May 2023

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Gradual emergence of superconductivity in underdoped La 2−xSrxCuO4Final published version, 596 KBLicence: CC BY

Cite this

Ţuţueanu, A. E., Kamminga, M. E., Tejsner, T. B., Jacobsen, H., Hansen, H. W., Lǎcǎtuşu, M. E., Baas, J., Eliasen, K. L., Grivel, J. C., Sassa, Y., Christensen, N. B., Steffens, P., Boehm, M., Piovano, A., Lefmann, K., & Rømer, A. T. (2023). Gradual emergence of superconductivity in underdoped La2-x Srx CuO4. Physical Review B, 107(17), Article 174514. https://doi.org/10.1103/PhysRevB.107.174514

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title = "Gradual emergence of superconductivity in underdoped La2-x Srx CuO4",

abstract = "We present triple-axis neutron scattering studies of low-energy magnetic fluctuations in strongly underdoped La2-xSrxCuO4 with x=0.05, 0.06 and 0.07, providing quantitative evidence for a direct competition between these fluctuations and superconductivity. At dopings x=0.06 and x=0.07, three-dimensional superconductivity is found, while only a very weak signature of two-dimensional superconductivity residing in the CuO2 planes is detectable for x=0.05. We find a surprising suppression of the low-energy fluctuations by an external magnetic field at all three dopings. This implies that the response of two-dimensional superconductivity to a magnetic field is similar to that of a bulk superconductor. Our results provide direct evidence of a very gradual onset of superconductivity in cuprates.",

author = "{\c T}u{\c t}ueanu, {Ana Elena} and Kamminga, {MacHteld E.} and Tejsner, {Tim B.} and Henrik Jacobsen and Hansen, {Henriette W.} and Lǎcǎtu{\c s}u, {Monica Elisabeta} and Jacob Baas and Eliasen, {Kira L.} and Grivel, {Jean Claude} and Yasmine Sassa and Christensen, {Niels Bech} and Paul Steffens and Martin Boehm and Andrea Piovano and Kim Lefmann and R{\o}mer, {Astrid T.}",

year = "2023",

month = may,

day = "1",

doi = "10.1103/PhysRevB.107.174514",

language = "English",

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Ţuţueanu, AE, Kamminga, ME, Tejsner, TB, Jacobsen, H, Hansen, HW, Lǎcǎtuşu, ME, Baas, J, Eliasen, KL, Grivel, JC, Sassa, Y, Christensen, NB, Steffens, P, Boehm, M, Piovano, A, Lefmann, K & Rømer, AT 2023, 'Gradual emergence of superconductivity in underdoped La2-x Srx CuO4', Physical Review B, vol. 107, no. 17, 174514. https://doi.org/10.1103/PhysRevB.107.174514

TY - JOUR

T1 - Gradual emergence of superconductivity in underdoped La2-x Srx CuO4

AU - Ţuţueanu, Ana Elena

AU - Kamminga, MacHteld E.

AU - Tejsner, Tim B.

AU - Jacobsen, Henrik

AU - Hansen, Henriette W.

AU - Lǎcǎtuşu, Monica Elisabeta

AU - Baas, Jacob

AU - Eliasen, Kira L.

AU - Grivel, Jean Claude

AU - Sassa, Yasmine

AU - Christensen, Niels Bech

AU - Steffens, Paul

AU - Boehm, Martin

AU - Piovano, Andrea

AU - Lefmann, Kim

AU - Rømer, Astrid T.

PY - 2023/5/1

Y1 - 2023/5/1

N2 - We present triple-axis neutron scattering studies of low-energy magnetic fluctuations in strongly underdoped La2-xSrxCuO4 with x=0.05, 0.06 and 0.07, providing quantitative evidence for a direct competition between these fluctuations and superconductivity. At dopings x=0.06 and x=0.07, three-dimensional superconductivity is found, while only a very weak signature of two-dimensional superconductivity residing in the CuO2 planes is detectable for x=0.05. We find a surprising suppression of the low-energy fluctuations by an external magnetic field at all three dopings. This implies that the response of two-dimensional superconductivity to a magnetic field is similar to that of a bulk superconductor. Our results provide direct evidence of a very gradual onset of superconductivity in cuprates.

AB - We present triple-axis neutron scattering studies of low-energy magnetic fluctuations in strongly underdoped La2-xSrxCuO4 with x=0.05, 0.06 and 0.07, providing quantitative evidence for a direct competition between these fluctuations and superconductivity. At dopings x=0.06 and x=0.07, three-dimensional superconductivity is found, while only a very weak signature of two-dimensional superconductivity residing in the CuO2 planes is detectable for x=0.05. We find a surprising suppression of the low-energy fluctuations by an external magnetic field at all three dopings. This implies that the response of two-dimensional superconductivity to a magnetic field is similar to that of a bulk superconductor. Our results provide direct evidence of a very gradual onset of superconductivity in cuprates.

U2 - 10.1103/PhysRevB.107.174514

DO - 10.1103/PhysRevB.107.174514

M3 - Journal article

AN - SCOPUS:85161316217

SN - 2469-9950

VL - 107

JO - Physical Review B

JF - Physical Review B

IS - 17

M1 - 174514

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