Charge Quantization and Kondo Quantum Criticality in Few-Channel Mesoscopic Circuits

✍ Scribed by Zubair Iftikhar

• Publisher: Springer International Publishing
• Year: 2018
• Tongue: English
• Leaves: 147
• Series: Springer Theses
• Edition: 1st ed.
• Category: Library

✦ Synopsis

This thesis explores several fundamental topics in mesoscopic circuitries that incorporate few electronic conduction channels. It reports a series of long-awaited experiments that establish a new state of the art.

The first experiments address the quantized character of charge in circuits. We demonstrate the charge quantization criterion, observe the predicted charge quantization scaling and a crossover toward a universal behavior as temperature is increased.

The second set of experiments addresses the unconventional quantum critical physics that arises in the multichannel Kondo model. We observe the predicted universal Kondo fixed points and validate the numerical renormalization group scaling curves. Away from the quantum critical point, we obtain a direct visualization of the development of a second-order quantum phase transition.

✦ Table of Contents

Front Matter ....Pages i-xiii
Introduction (Zubair Iftikhar)....Pages 1-27
Charge Quantization (Zubair Iftikhar)....Pages 29-48
Observation of the Multi-channel ‘charge’ Kondo Effect (Zubair Iftikhar)....Pages 49-81
Quantum Phase Transition in Multi-channel Kondo Systems (Zubair Iftikhar)....Pages 83-107
Back Matter ....Pages 109-137

✦ Subjects

Physics; Quantum Physics; Low Temperature Physics; Quantum Gases and Condensates; Electronic Circuits and Devices