Fractional Spin and Josephson Effect in Time-Reversal-Invariant Topological Superconductors
Time-reversal-invariant topological superconducting (TRITOPS) wires are known to host a fractional spin /4 at their ends. We investigate how this fractional spin affects the Josephson current in a TRITOPS-quantum dot-TRITOPS Josephson junction, describing the wire in a model that can be tuned betwee...
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2017
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v119_n4_p_Camjayi http://hdl.handle.net/20.500.12110/paper_00319007_v119_n4_p_Camjayi |
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paper:paper_00319007_v119_n4_p_Camjayi2023-06-08T14:58:21Z Fractional Spin and Josephson Effect in Time-Reversal-Invariant Topological Superconductors Josephson junction devices Monte Carlo methods Quantum optics Semiconductor quantum dots Superconducting materials Continuous-time Fractional spin Josephson current Josephson effect Josephson-junction Quantum dot spins Spin singlets Topological phase Topology Time-reversal-invariant topological superconducting (TRITOPS) wires are known to host a fractional spin /4 at their ends. We investigate how this fractional spin affects the Josephson current in a TRITOPS-quantum dot-TRITOPS Josephson junction, describing the wire in a model that can be tuned between a topological and a nontopological phase. We compute the equilibrium Josephson current of the full model by continuous-time Monte Carlo simulations and interpret the results within an effective low-energy theory. We show that in the topological phase, the 0-to-π transition is quenched via formation of a spin singlet from the quantum-dot spin and the fractional spins associated with the two adjacent topological superconductors. © 2017 American Physical Society. 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v119_n4_p_Camjayi http://hdl.handle.net/20.500.12110/paper_00319007_v119_n4_p_Camjayi |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Josephson junction devices Monte Carlo methods Quantum optics Semiconductor quantum dots Superconducting materials Continuous-time Fractional spin Josephson current Josephson effect Josephson-junction Quantum dot spins Spin singlets Topological phase Topology |
| spellingShingle |
Josephson junction devices Monte Carlo methods Quantum optics Semiconductor quantum dots Superconducting materials Continuous-time Fractional spin Josephson current Josephson effect Josephson-junction Quantum dot spins Spin singlets Topological phase Topology Fractional Spin and Josephson Effect in Time-Reversal-Invariant Topological Superconductors |
| topic_facet |
Josephson junction devices Monte Carlo methods Quantum optics Semiconductor quantum dots Superconducting materials Continuous-time Fractional spin Josephson current Josephson effect Josephson-junction Quantum dot spins Spin singlets Topological phase Topology |
| description |
Time-reversal-invariant topological superconducting (TRITOPS) wires are known to host a fractional spin /4 at their ends. We investigate how this fractional spin affects the Josephson current in a TRITOPS-quantum dot-TRITOPS Josephson junction, describing the wire in a model that can be tuned between a topological and a nontopological phase. We compute the equilibrium Josephson current of the full model by continuous-time Monte Carlo simulations and interpret the results within an effective low-energy theory. We show that in the topological phase, the 0-to-π transition is quenched via formation of a spin singlet from the quantum-dot spin and the fractional spins associated with the two adjacent topological superconductors. © 2017 American Physical Society. |
| title |
Fractional Spin and Josephson Effect in Time-Reversal-Invariant Topological Superconductors |
| title_short |
Fractional Spin and Josephson Effect in Time-Reversal-Invariant Topological Superconductors |
| title_full |
Fractional Spin and Josephson Effect in Time-Reversal-Invariant Topological Superconductors |
| title_fullStr |
Fractional Spin and Josephson Effect in Time-Reversal-Invariant Topological Superconductors |
| title_full_unstemmed |
Fractional Spin and Josephson Effect in Time-Reversal-Invariant Topological Superconductors |
| title_sort |
fractional spin and josephson effect in time-reversal-invariant topological superconductors |
| publishDate |
2017 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v119_n4_p_Camjayi http://hdl.handle.net/20.500.12110/paper_00319007_v119_n4_p_Camjayi |
| _version_ |
1768542777204801536 |