Corbino quantum Hall systems exhibit a large Peltier coefficient that produces observable cooling below bath temperature at the perimeter under appropriately directed radial current.
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Step-function transmissions in potential barriers reach within 15% of ideal quantum thermoelectric efficiency at finite power outputs and outperform Lorentzian transmissions from quantum dots, particularly when phonons are present.
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Peltier cooling in Corbino-geometry quantum Hall systems
Corbino quantum Hall systems exhibit a large Peltier coefficient that produces observable cooling below bath temperature at the perimeter under appropriately directed radial current.
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Potential barriers are nearly-ideal quantum thermoelectrics at finite power output
Step-function transmissions in potential barriers reach within 15% of ideal quantum thermoelectric efficiency at finite power outputs and outperform Lorentzian transmissions from quantum dots, particularly when phonons are present.