# Physicists Link Cuprate Pseudogap to Electron Pairing Up to 70 meV

- Published: 2026-11-06 17:38 UTC
- Section: Science › Physics
- Tags: cuprate superconductor, pseudogap energy, shot noise spectroscopy, Cooper pair formation, phase coherence
- URL: https://realtech.media/news/rt-466857b9a646b0b091c7073e_physicists_link_cuprate/

**Shot-noise spectroscopy of a bismuth cuprate revealed that the pseudogap marks the onset of electron pairing rather than competing local order.**

![Physicists Link Cuprate Pseudogap to Electron Pairing Up to 70 meV](https://sgzwpqqelzmajkcubgkl.supabase.co/storage/v1/object/public/rt-media/2026/11/ef8b2d8b3670fd5f.jpg)
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Researchers measured local shot-noise spectroscopy in the high-temperature cuprate superconductor Bi₂Sr₂CaCu₂O₈₊δ to study the nature of the pseudogap phase, according to a report in Science [1].

The measurements demonstrated that the pseudogap energy directly coincides with the onset of electron pairing [1]. The observed energy is spatially heterogeneous across the material and reaches values of up to 70 milli–electron volts [1].

These data provide experimental evidence linking the pseudogap to Cooper pair formation and exclude hypotheses attributing it purely to local order [1]. The findings indicate that the critical temperature in cuprates is limited by phase coherence [1].

## Sources

1. [Science](https://doi.org/10.1126/science.adt3444)

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Source: RealTech, realtech.media — https://realtech.media/news/rt-466857b9a646b0b091c7073e_physicists_link_cuprate/