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Chang J, Christensen NB, Niedermayer Ch, et al. Magnetic-field-induced soft-mode quantum phase transition in the high-temperature superconductor La1.855Sr0.145CuO4: an inelastic neutron-scattering study. Phys Rev Lett. 2009;102(17):177006doi: 10.1103/PhysRevLett.102.177006.
Chang, J., Christensen, N. B., Niedermayer, C. h., Lefmann, K., Rønnow, H. M., McMorrow, D. F., Schneidewind, A., Link, P., Hiess, A., Boehm, M., Mottl, R., Pailhés, S., Momono, N., Oda, M., Ido, M., & Mesot, J. (2009). Magnetic-field-induced soft-mode quantum phase transition in the high-temperature superconductor La1.855Sr0.145CuO4: an inelastic neutron-scattering study. Physical review letters, 102(17), 177006. https://doi.org/10.1103/PhysRevLett.102.177006
Chang, J, et al. "Magnetic-field-induced soft-mode quantum phase transition in the high-temperature superconductor La1.855Sr0.145CuO4: an inelastic neutron-scattering study." Physical review letters vol. 102,17 (2009): 177006. doi: https://doi.org/10.1103/PhysRevLett.102.177006
Chang J, Christensen NB, Niedermayer Ch, Lefmann K, Rønnow HM, McMorrow DF, Schneidewind A, Link P, Hiess A, Boehm M, Mottl R, Pailhés S, Momono N, Oda M, Ido M, Mesot J. Magnetic-field-induced soft-mode quantum phase transition in the high-temperature superconductor La1.855Sr0.145CuO4: an inelastic neutron-scattering study. Phys Rev Lett. 2009 May 01;102(17):177006. doi: 10.1103/PhysRevLett.102.177006. Epub 2009 Apr 30. PMID: 19518819.
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Phys Rev Lett. 2009 May 01;102(17):177006. doi: 10.1103/PhysRevLett.102.177006. Epub 2009 Apr 30.

Magnetic-field-induced soft-mode quantum phase transition in the high-temperature superconductor La1.855Sr0.145CuO4: an inelastic neutron-scattering study.

Physical review letters

J Chang, N B Christensen, Ch Niedermayer, K Lefmann, H M Rønnow, D F McMorrow, A Schneidewind, P Link, A Hiess, M Boehm, R Mottl, S Pailhés, N Momono, M Oda, M Ido, J Mesot

Affiliations

  1. Laboratory for Neutron Scattering, ETH Zurich and PSI Villigen, CH-5232 Villigen PSI, Switzerland. [email protected]

PMID: 19518819 DOI: 10.1103/PhysRevLett.102.177006

Abstract

Inelastic neutron-scattering experiments on the high-temperature superconductor La1.855Sr0.145CuO4 reveal a magnetic excitation gap Delta that decreases continuously upon application of a magnetic field perpendicular to the CuO2 planes. The gap vanishes at the critical field required to induce long-range incommensurate antiferromagnetic order, providing compelling evidence for a field-induced soft-mode driven quantum phase transition.

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