AF Spin Gap Limits the Coherent SC Gap in Cuprates

Thumbnail Image

Persistent link to this item

View Statistics

Journal Title

Journal ISSN

Volume Title


AF Spin Gap Limits the Coherent SC Gap in Cuprates

Published Date






We have performed inelastic neutron scattering measurements of the magnetic excitations in La(2-x)Sr(x)CuO(4) at doping levels on both sides of the putative quantum critical point, in both the superconducting and normal states. The low-energy excitations look similar at both dopings: there is a peak in the magnetic spectral weight at 15-20 meV, and the spin gap (~ 7 meV) in the superconducting state develops on the low-energy side of this peak. Past work in a magnetic field indicates that suppressing the superconducting order only causes the spin gap to fill in—there is no evidence of critical behavior of the peak in spectral weight. I will discuss this result in the broader context of magnetic correlations in the cuprates.


Related to



Series/Report Number

Funding information

Isbn identifier

Doi identifier

Previously Published Citation

Suggested citation

Tranquada, John. (2018). AF Spin Gap Limits the Coherent SC Gap in Cuprates. Retrieved from the University Digital Conservancy,

Content distributed via the University Digital Conservancy may be subject to additional license and use restrictions applied by the depositor. By using these files, users agree to the Terms of Use. Materials in the UDC may contain content that is disturbing and/or harmful. For more information, please see our statement on harmful content in digital repositories.