English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Nonequilibrium properties of correlated quantum matter are being intensivelyinvestigated because of the rich interplay between external driving and themany-body correlations. Of particular interest is the nonequilibrium behaviornear a quantum critical point (QCP), where the system is delicately balancedbetween different ground states. We present both an analytical calculation ofthe nonequilibrium steady-state current in a critical system and experimentalresults to which the theory is compared. The system is a quantum dot coupled toresistive leads: a spinless resonant level interacting with an ohmicdissipative environment. A two channel Kondo-like QCP occurs when the level ison resonance and symmetrically coupled to the leads, conditions achieved byfine-tuning using electrostatic gates. We calculate and measure the nonlinearcurrent as a function of bias ($I$-$V$ curve) at the critical values of thegate voltages corresponding to the QCP. The quantitative agreement between theexperimental data and the theory, with no fitting parameter, is excellent. Asour system is fully accessible to both theory and experiment, it provides anideal setting for addressing nonequilibrium phenomena in correlated quantummatter.

Nonequilibrium Quantum Critical Steady State: Transport Through a Dissipative Resonant Level