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New research reveals that high-temperature superconductivity in cuprate materials is limited by a fundamental quantum competition between superconducting and pseudogap states, which cannot coexist. By using laser pulses to induce phase transitions, scientists demonstrated that these competing orders mutually exclude one another, challenging previous assumptions about the material's electronic structure. This finding provides a clearer framework for understanding the dynamics of electron behavior in these systems without relying on computationally intensive methods.
Quantum tug-of-war limits high-temperature superconductivity
New research illuminates a quantum “tug-of-war” hindering superconductivity in ‘cuprate’ materials, potentially limiting temperatures achievable for lossless current flow.
A pulse of light enabled researchers to observe a competition between superconductivity and a competing state of matter, revealing a key limitation to achieving higher-temperature superconductivity. The collaboration, including scientists at the Flatiron Institute and the Institut national de la recherche scientifique, focused on ‘cuprate’ materials as they transitioned from superconducting to the ‘pseudogap’ state. This work challenges the assumption that superconductivity in these materials relies on a pre-existing pseudogap phase,…
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