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Hebrew University Finds Two-Band Superconductivity in NbSe2

9/2/2026

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Summary

Story summary

Israeli researchers at Hebrew University discovered two-band superconductivity in ultra-thin niobium diselenide (NbSe2).
They used tunneling spectroscopy and found a single-gap appearance caused by strong inter-band scattering.
Calculations showed a two-band model fits the data better than a single-band theory.
The same two-into-one behavior was observed in ultra-thin tantalum disulfide (TaS2).

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Story summary

Israeli researchers at Hebrew University discovered two-band superconductivity in ultra-thin niobium diselenide (NbSe2).
They used tunneling spectroscopy and found a single-gap appearance caused by strong inter-band scattering.
Calculations showed a two-band model fits the data better than a single-band theory.
The same two-into-one behavior was observed in ultra-thin tantalum disulfide (TaS2).