Physics of Josephson Diodes Formed from 1T-Transition Metal Dichalcogenides
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Beschreibung
This book provides a clear and lucid introduction to the field of non-reciprocal supercurrent transport in Josephson junctions, particularly the Josephson diode effect in junctions fabricated from mechanically exfoliated transition metal dichalcogenides and its microscopic mechanism. Superconducting materials that display a non-reciprocity in their critical current, namely a supercurrent diode effect (SDE), and Josephson junctions (JJs) that display a Josephson diode effect (JDE) have recently been discovered just a few years ago. These phenomena have attracted much attention for their potential in creating energy-efficient superconducting electronics. The SDE was discovered for the first time only in 2020 and the JDE shortly afterwards. JJs are a critical element of many superconducting devices and, in particular, superconducting qubits that are under intense study for the development of quantum computers. In order to make use of devices that display a JDE, a detailed and comprehensive understanding of the physical origin or origins of this effect is essential, which is the main topic of this dissertation. In addition to the published results, the dissertation contains detailed information on the basic theoretical aspects of superconductivity, Josephson junctions, and the experimental methods that are necessary to achieve these results, which is suitable for undergraduate and graduate students or any reader with knowledge on basic condensed matter physics.
This book provides a clear and lucid introduction to the field of non-reciprocal supercurrent transport in Josephson junctions, particularly the Josephson diode effect in junctions fabricated from mechanically exfoliated transition metal dichalcogenides and its microscopic mechanism. Superconducting materials that display a non-reciprocity in their critical current, namely a supercurrent diode effect (SDE), and Josephson junctions (JJs) that display a Josephson diode effect (JDE) have recently been discovered just a few years ago. These phenomena have attracted much attention for their potential in creating energy-efficient superconducting electronics. The SDE was discovered for the first time only in 2020 and the JDE shortly afterwards. JJs are a critical element of many superconducting devices and, in particular, superconducting qubits that are under intense study for the development of quantum computers. In order to make use of devices that display a JDE, a detailed and comprehensive understanding of the physical origin or origins of this effect is essential, which is the main topic of this dissertation. In addition to the published results, the dissertation contains detailed information on the basic theoretical aspects of superconductivity, Josephson junctions, and the experimental methods that are necessary to achieve these results, which is suitable for undergraduate and graduate students or any reader with knowledge on basic condensed matter physics.
Nominated as an outstanding PhD thesis by the Max Planck Institute of Microstructure Physics, Halle, Germany Provides important insights into the Josephson diode effect in 2D van der Waals materials Makes a significant contribution to advancing the field of energy-efficient superconducting technologies
Autor*in
Pranava Keerthi Sivakumar
Themen in »Physics of Josephson Diodes Formed from 1T-Transition Metal Dichalcogenides«
Superconducting Diode Effect Josephson Diode Effect Transition Metal Dichalcogenides Local inversion Symmetry Breaking Helical spin-Momentum Locking Rashba spin-momentum locking Josephson junctions Nickel Telluride NiTe2 Platinum Telluride PtTe2 Topological Surface States Dirac semimetal Higher-order Andreev Reflections Long-range Coherence Tunable second harmonic supercurrents