Superconducting-like response in driven systems near the Mott transition
Zhehao Dai, Patrick A. Lee
DOI 10.1103/PhysRevB.104.L241112 · Physical Review B
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Abstract
We point out that fractionalized bosonic charge excitations can explain the recently discovered photoinduced superconducting-like response in κ-(ET)2Cu[N(CN)2]Br, an organic metal close to the Mott transition. The pump laser exerts a periodic drive on the fractionalized field, creating a nonequilibrium condensate, which gives a Drude peak much narrower than the equilibrium scattering rate, hence a superconducting-like response. Our proposal illuminates alternative possibilities of detecting fractionalization and can be readily tested in spin liquid candidates and in cold atom systems.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| κ-(ET)2Cu[N(CN)2]Br Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 12 | Pressure unresolved | unknown |
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