Large N behavior of Non-Ohmic Tunnel Junctions
S.R. Renn
TL;DR
This paper investigates the thermodynamic and transport properties of non-Ohmic tunnel junctions, revealing a quantum phase transition in subOhmic cases and a vanishing pseudogap near the transition.
Contribution
It provides a non-perturbative analysis of non-Ohmic tunnel junctions, highlighting the existence of a quantum phase transition in subOhmic systems.
Findings
Quantum phase transition in subOhmic tunnel junctions
Pseudogap vanishes continuously at the transition
Large-N approximation effectively describes the system
Abstract
Non-Ohmic tunnel junctions are believed to occur in systems where the exciton and orthogonality catastrophe effects significantly modify tunneling rates. Here we present a simple non-perturbative treatment of the thermodynamic and transport properties of subOhmic and superOhmic tunnel junctions. The large-N approximation demonstrates the existence of a quantum phase transition in subOhmic but not superOhmic tunnel junctions. In addition, we find a pseudogap which vanishes continuously as the transition is approached.
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Taxonomy
TopicsIntegrated Circuits and Semiconductor Failure Analysis · Advancements in Semiconductor Devices and Circuit Design · Advanced Memory and Neural Computing