Magnetic Field-Induced Closure of the Spin Excitation Gap near Optimal Doping in La2-xSrxCuO4

Niels Bech Christensen; J. Chang; E. Razzoli; M. Bator; C. Niedermayer; K. Lefmann; H.M. Ronnow; D.F. McMorrow; A. Schneidewind; P. Link; A. Hiess; M. Boehm; R. Mottl; S. Pailhes; M. Oda; M. Ido; N. Momono; J. Mesot

Magnetic Field-Induced Closure of the Spin Excitation Gap near Optimal Doping in La2-xSrxCuO4

Niels Bech Christensen
, J. Chang
, E. Razzoli
, M. Bator
, C. Niedermayer
, K. Lefmann
, H.M. Ronnow
, D.F. McMorrow
, A. Schneidewind
, P. Link
, A. Hiess
, M. Boehm
, R. Mottl
, S. Pailhes
, M. Oda
, M. Ido
, N. Momono
, J. Mesot

Paul Scherrer Institute
Swiss Federal Institute of Technology Lausanne
University College London
Technical University of Munich
Institut Laue-Langevin
Swiss Federal Institute of Technology Zurich
Universite Claude Bernard Lyon 1
Hokkaido University
Muroran Institute of Technology
University of Copenhagen

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

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Abstract

We have investigated how a magnetic field applied perpendicular to the CuO2 planes of the near-optimally hole-doped high-temperature superconductor La1.855Sr0.145CuO4 (Tc ≈ 36 K) influences the low-energy magnetic excitation spectrum. Our detailed single-crystal neutron scattering experiments reveal that the gap to magnetic excitations falls off linearly with increasing field and reaches zero at the magnetic field µ₀Hs=7±1 T required to induce long-range incommensurate magnetic order. A comparison with the electron-doped cuprate Nd1.85Ce0.15CuO4 is made and the possible link between field-induced magnetic order and Fermi surface reconstruction in cuprates is discussed.We have investigated how a magnetic field applied perpendicular to the CuO2 planes of the near-optimally hole-doped high-temperature superconductor La1.855Sr0.145CuO4 (Tc ≈ 36 K) influences the low-energy magnetic excitation spectrum. Our detailed single-crystal neutron scattering experiments reveal that the gap to magnetic excitations falls off linearly with increasing field and reaches zero at the magnetic field µ₀Hs=7±1 T required to induce long-range incommensurate magnetic order. A comparison with the electron-doped cuprate Nd1.85Ce0.15CuO4 is made and the possible link between field-induced magnetic order and Fermi surface reconstruction in cuprates is discussed.

Original language	English
Journal	Physical Society of Japan. Journal. Supplement
Volume	80
Pages (from-to)	SB030
ISSN	0375-9598
Publication status	Published - 2011
Event	International Workshop on Neutron Applications on Strongly Correlated Electron Systems 2011 - Tokai, Japan Duration: 23 Feb 2011 → 26 Feb 2011

Conference

Conference	International Workshop on Neutron Applications on Strongly Correlated Electron Systems 2011
Country/Territory	Japan
City	Tokai
Period	23/02/2011 → 26/02/2011

Keywords

Neutron scattering
Magnetic excitations
High-temperature superconductors
Quantum phase transitions
Quantum oscillations

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Christensen, N. B., Chang, J., Razzoli, E., Bator, M., Niedermayer, C., Lefmann, K., Ronnow, H. M., McMorrow, D. F., Schneidewind, A., Link, P., Hiess, A., Boehm, M., Mottl, R., Pailhes, S., Oda, M., Ido, M., Momono, N., & Mesot, J. (2011). Magnetic Field-Induced Closure of the Spin Excitation Gap near Optimal Doping in La2-xSrxCuO4. Physical Society of Japan. Journal. Supplement, 80, SB030.

@inproceedings{9bf56d3ee0aa490880d0cf66190fd015,

title = "Magnetic Field-Induced Closure of the Spin Excitation Gap near Optimal Doping in La2-xSrxCuO4",

abstract = "We have investigated how a magnetic field applied perpendicular to the CuO2 planes of the near-optimally hole-doped high-temperature superconductor La1.855Sr0.145CuO4 (Tc ≈ 36 K) influences the low-energy magnetic excitation spectrum. Our detailed single-crystal neutron scattering experiments reveal that the gap to magnetic excitations falls off linearly with increasing field and reaches zero at the magnetic field µ0Hs=7±1 T required to induce long-range incommensurate magnetic order. A comparison with the electron-doped cuprate Nd1.85Ce0.15CuO4 is made and the possible link between field-induced magnetic order and Fermi surface reconstruction in cuprates is discussed.We have investigated how a magnetic field applied perpendicular to the CuO2 planes of the near-optimally hole-doped high-temperature superconductor La1.855Sr0.145CuO4 (Tc ≈ 36 K) influences the low-energy magnetic excitation spectrum. Our detailed single-crystal neutron scattering experiments reveal that the gap to magnetic excitations falls off linearly with increasing field and reaches zero at the magnetic field µ0Hs=7±1 T required to induce long-range incommensurate magnetic order. A comparison with the electron-doped cuprate Nd1.85Ce0.15CuO4 is made and the possible link between field-induced magnetic order and Fermi surface reconstruction in cuprates is discussed.",

keywords = "Neutron scattering, Magnetic excitations, High-temperature superconductors, Quantum phase transitions, Quantum oscillations",

author = "Christensen, \{Niels Bech\} and J. Chang and E. Razzoli and M. Bator and C. Niedermayer and K. Lefmann and H.M. Ronnow and D.F. McMorrow and A. Schneidewind and P. Link and A. Hiess and M. Boehm and R. Mottl and S. Pailhes and M. Oda and M. Ido and N. Momono and J. Mesot",

year = "2011",

language = "English",

volume = "80",

pages = "SB030",

journal = "Physical Society of Japan. Journal. Supplement",

issn = "0375-9598",

note = "International Workshop on Neutron Applications on Strongly Correlated Electron Systems 2011, NASCES11 ; Conference date: 23-02-2011 Through 26-02-2011",

}

Christensen, NB, Chang, J, Razzoli, E, Bator, M, Niedermayer, C, Lefmann, K, Ronnow, HM, McMorrow, DF, Schneidewind, A, Link, P, Hiess, A, Boehm, M, Mottl, R, Pailhes, S, Oda, M, Ido, M, Momono, N & Mesot, J 2011, 'Magnetic Field-Induced Closure of the Spin Excitation Gap near Optimal Doping in La2-xSrxCuO4', Physical Society of Japan. Journal. Supplement, vol. 80, pp. SB030.

TY - GEN

T1 - Magnetic Field-Induced Closure of the Spin Excitation Gap near Optimal Doping in La2-xSrxCuO4

AU - Christensen, Niels Bech

AU - Chang, J.

AU - Razzoli, E.

AU - Bator, M.

AU - Niedermayer, C.

AU - Lefmann, K.

AU - Ronnow, H.M.

AU - McMorrow, D.F.

AU - Schneidewind, A.

AU - Link, P.

AU - Hiess, A.

AU - Boehm, M.

AU - Mottl, R.

AU - Pailhes, S.

AU - Oda, M.

AU - Ido, M.

AU - Momono, N.

AU - Mesot, J.

PY - 2011

Y1 - 2011

N2 - We have investigated how a magnetic field applied perpendicular to the CuO2 planes of the near-optimally hole-doped high-temperature superconductor La1.855Sr0.145CuO4 (Tc ≈ 36 K) influences the low-energy magnetic excitation spectrum. Our detailed single-crystal neutron scattering experiments reveal that the gap to magnetic excitations falls off linearly with increasing field and reaches zero at the magnetic field µ0Hs=7±1 T required to induce long-range incommensurate magnetic order. A comparison with the electron-doped cuprate Nd1.85Ce0.15CuO4 is made and the possible link between field-induced magnetic order and Fermi surface reconstruction in cuprates is discussed.We have investigated how a magnetic field applied perpendicular to the CuO2 planes of the near-optimally hole-doped high-temperature superconductor La1.855Sr0.145CuO4 (Tc ≈ 36 K) influences the low-energy magnetic excitation spectrum. Our detailed single-crystal neutron scattering experiments reveal that the gap to magnetic excitations falls off linearly with increasing field and reaches zero at the magnetic field µ0Hs=7±1 T required to induce long-range incommensurate magnetic order. A comparison with the electron-doped cuprate Nd1.85Ce0.15CuO4 is made and the possible link between field-induced magnetic order and Fermi surface reconstruction in cuprates is discussed.

AB - We have investigated how a magnetic field applied perpendicular to the CuO2 planes of the near-optimally hole-doped high-temperature superconductor La1.855Sr0.145CuO4 (Tc ≈ 36 K) influences the low-energy magnetic excitation spectrum. Our detailed single-crystal neutron scattering experiments reveal that the gap to magnetic excitations falls off linearly with increasing field and reaches zero at the magnetic field µ0Hs=7±1 T required to induce long-range incommensurate magnetic order. A comparison with the electron-doped cuprate Nd1.85Ce0.15CuO4 is made and the possible link between field-induced magnetic order and Fermi surface reconstruction in cuprates is discussed.We have investigated how a magnetic field applied perpendicular to the CuO2 planes of the near-optimally hole-doped high-temperature superconductor La1.855Sr0.145CuO4 (Tc ≈ 36 K) influences the low-energy magnetic excitation spectrum. Our detailed single-crystal neutron scattering experiments reveal that the gap to magnetic excitations falls off linearly with increasing field and reaches zero at the magnetic field µ0Hs=7±1 T required to induce long-range incommensurate magnetic order. A comparison with the electron-doped cuprate Nd1.85Ce0.15CuO4 is made and the possible link between field-induced magnetic order and Fermi surface reconstruction in cuprates is discussed.

KW - Neutron scattering

KW - Magnetic excitations

KW - High-temperature superconductors

KW - Quantum phase transitions

KW - Quantum oscillations

M3 - Conference article

SN - 0375-9598

VL - 80

SP - SB030

JO - Physical Society of Japan. Journal. Supplement

JF - Physical Society of Japan. Journal. Supplement

T2 - International Workshop on Neutron Applications on Strongly Correlated Electron Systems 2011

Y2 - 23 February 2011 through 26 February 2011

ER -

Magnetic Field-Induced Closure of the Spin Excitation Gap near Optimal Doping in La2-xSrxCuO4

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Conference

Keywords

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