Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
The iron-based superconductor FeTe Se is one of the material candidates hosting Majorana vortex modes residing in the vortex cores. It has been observed by recent scanning tunneling spectroscopy measurement that the fraction of vortex cores having zero-bias peaks decreases with increasing magnetic field on the surface of FeTe Se . The hybridization of two Majorana vortex modes cannot simply explain this phenomenon. We construct a three-dimensional tight-binding model simulating the physics of over a hundred Majorana vortex modes in FeTe Se . Our simulation shows that the Majorana hybridization and disordered vortex distribution can explain the decreasing fraction of the zero-bias peaks observed in the experiment; the statistics of the energy peaks off zero energy in our Majorana simulation are in agreement with the experiment. These agreements lead to an important indication of scalable Majorana vortex modes in FeTe Se . Thus, FeTe Se can be one promising platform having scalable Majorana qubits for quantum computing.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7048414 | PMC |
| http://dx.doi.org/10.1126/sciadv.aay0443 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Observation of Persistent Zero Modes and Superconducting Vortex Doublets in UTe.
ACS Nano
September 2025
Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556, United States.
Superconducting vortices can reveal electron pairing details and nucleate topologically protected states. Yet, vortices of bulk spin-triplet superconductors have never been visualized at the atomic scale. Recently, UTe has emerged as a prime spin-triplet superconductor, but its superconducting order parameter is elusive, and whether time-reversal symmetry (TRS) is broken remains unsettled.
View Article and Find Full Text PDFStrong Superconducting Proximity Compatible with Fermi-Level Tuning at Top Surfaces of Bulk Insulating SnTe-Type Semiconductors.
Nano Lett
May 2025
Tsung-Dao Lee Institute, Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China.
The signature of multiple Majorana zero modes (MZMs) was recently observed in a single vortex of topological crystalline insulator SnTe. However, to directly distinguish the MZMs, the Fermi level should be very close to the Dirac points of topological surface states and thus be inside the insulating bulk bandgap, leading to a significant suppression of proximity-induced superconductivity in the vertical heterostructure. Here, we demonstrate that both the strong superconducting proximity effect and the small Fermi energy can be simultaneously satisfied in the lateral heterostructures composed of SnTe-type semiconductors and Pb.
View Article and Find Full Text PDFStripe charge order and its interaction with Majorana bound states in 2M-WS topological superconductors.
Natl Sci Rev
February 2025
State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China.
To achieve logic operations via Majorana braiding, positional control of the Majorana bound states (MBSs) must be established. Here we report the observation of a striped surface charge order coexisting with superconductivity and its interaction with the MBS in the topological superconductor 2M-WS, using low-temperature scanning tunneling microscopy. By applying an out-of-plane magnetic field, we observe that MBSs are absent in vortices in the region with stripe order.
View Article and Find Full Text PDFObservation of Yu-Shiba-Rusinov-like states at the edge of CrBr/NbSe heterostructure.
Nat Commun
November 2024
School of Emerging Technology and Department of Physics, University of Science and Technology of China, Hefei, 230026, China.
The hybrid ferromagnet-superconductor heterostructures have attracted extensive attention as they potentially host topological superconductivity. Relevant experimental signatures have recently been reported in CrBr/NbSe ferromagnet-superconductor heterostructure, but controversies remain. Here, we reinvestigate CrBr/NbSe by an ultralow temperature scanning tunneling microscope with higher spatial and energy resolutions.
View Article and Find Full Text PDFVisualization of Skyrmion-Superconducting Vortex Pairs in a Chiral-Magnet-Superconductor Heterostructure.
Phys Rev Lett
October 2024
Institute of Physics, Chinese Academy of Sciences, Beijing National Laboratory for Condensed Matter Physics, Beijing 100190, China.
Magnetic skyrmions, the topological states possessing chiral magnetic structure with nontrivial topology, have been widely investigated as a promising candidate for spintronic devices. They can also couple with superconducting vortices to form skyrmion-vortex pairs, hosting Majorana zero mode, which is a potential candidate for topological quantum computing. Many theoretical proposals have been put forward on constructing skyrmion-vortex pairs in heterostructures of chiral magnets and superconductors.
View Article and Find Full Text PDF