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 |
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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 (JP), 23-26 Feb Duration: 1 Jan 2011 → … |
Conference
Conference | International Workshop on Neutron Applications on Strongly Correlated Electron Systems 2011 |
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City | Tokai (JP), 23-26 Feb |
Period | 01/01/2011 → … |
Keywords
- Neutron scattering
- Magnetic excitations
- High-temperature superconductors
- Quantum phase transitions
- Quantum oscillations