Signature of a pair of Majorana zero modes in superconducting gold surface states

  title={Signature of a pair of Majorana zero modes in superconducting gold surface states},
  author={Sujit Manna and Peng Wei and Yingming Xie and Kam Tuen Law and Patrick A. Lee and Jagadeesh S. Moodera},
  journal={Proceedings of the National Academy of Sciences},
  pages={8775 - 8782}
Significance In 1937 Ettore Majorana pointed out that unlike the standard solution of the Dirac equation which led to the electron and its antiparticle, the positron, it is possible to have a solution where the fermionic particle is its own antiparticle. While such a particle remains elusive in particle physics, a pair of localized Majorana states has been predicted to reside at the ends of a specially designed superconducting wire. These Majorana zero modes can form building blocks of qubits… Expand
Detecting and distinguishing Majorana zero modes with the scanning tunnelling microscope
One of the most exciting areas of research in quantum condensed matter physics is the push to create topologically protected qubits using non-Abelian anyons. The focus of these efforts has beenExpand
Zero-bias peaks at zero magnetic field in ferromagnetic hybrid nanowires
Hybrid quantum materials allow for quantum phases that otherwise do not exist in nature 1 , 2 . For example, a one-dimensional topological superconductor with Majorana states bound to its ends can beExpand
Transport experiments in semiconductor-superconductor hybrid Majorana devices
As the condensed matter analog of Majorana fermion, Majorana zero-mode is well known as a building block of fault-tolerant topological quantum computing. In this review, we focus on the recentExpand
Emergent vortex Majorana zero mode in iron-based superconductors
  • Lingyuan Kong, Hong Ding
  • Physics
  • 2020
During the recent years, the iron-based superconductors with a topological band structure have attracted intensive attention from the science community as a new and promising platform for emergingExpand
Origin of Topological Surface Superconductivity in FeSe$_{0.45}$Te$_{0.55}$
The engineering of Majorana zero modes in topological superconductors, a new paradigm for the realization of topological quantum computing and topology-based devices, has been hampered by the absenceExpand
Recent progress of scanning tunneling microscopy/spectroscopy study of Majorana bound states in the FeTe0.55Se0.45 superconductor
Majorana bound states (MBSs) are spatially-localized zero-energy quasiparticles following non-Abelian braiding statistics that hold a great promise for fault-tolerant topological quantum computing.Expand
Majorana Zero Modes in Magnetic Texture Vortices
We propose an alternative route to engineer Majorana zero modes (MZMs), which relies on inducing shift or spin vortex defects in magnetic textures which microscopically coexist or are in proximity toExpand
Enhancement of superconductivity via resonant anti-shielding with topological plasmon-polarons
Stimulated by papers from the early 1970’s, metallic metamaterial structures have recently been proposed to enhance the critical temperature Tc of BCS superconductivity. That scheme requires aExpand
Topological superconductivity in skyrmion lattices
Atomic manipulation and interface engineering techniques have provided an intriguing approach to custom-designing topological superconductors and the ensuing Majorana zero modes, representing aExpand
Hybrid Symmetry Epitaxy of the Superconducting Fe(Te,Se) Film on a Topological Insulator.
It is demonstrated that Fe(Te,Se) can grow epitaxially on a TI (Bi2Te3) layer due to accidental, uniaxial lattice match, which is dubbed as "hybrid symmetry epitaxy", critical to stabilizing robust superconductivity with TC as high as 13 K. Expand


Observation of Majorana fermions in ferromagnetic atomic chains on a superconductor
High-resolution spectroscopic imaging techniques show that the onset of superconductivity, which gaps the electronic density of states in the bulk of the Fe chains, is accompanied by the appearance of zero-energy end-states, providing strong evidence for the formation of a topological phase and edge-bound Majorana fermions in atomic chains. Expand
Isolated pairs of Majorana zero modes in a disordered superconducting lead monolayer
Pairs of zero modes are stabilized in the middle and around the magnetic domains in a disordered superconducting Pb monolayer, demonstrating the protected Majorana nature of this zero mode pair and highlighting the role of magnetic or spin-orbit coupling textures. Expand
Exponential protection of zero modes in Majorana islands
The results help to explain the trivial-to-topological transition in finite systems and to quantify the scaling of topological protection with end-mode separation. Expand
Chiral Majorana fermion modes in a quantum anomalous Hall insulator–superconductor structure
Transport measurements that suggest the existence of one-dimensional chiral Majorana fermion modes in the hybrid system of a quantum anomalous Hall insulator thin film coupled with a superconductor are reported. Expand
Signatures of Majorana Fermions in Hybrid Superconductor-Semiconductor Nanowire Devices
Electrical measurements on indium antimonide nanowires contacted with one normal (gold) and one superconducting (niobium titanium nitride) electrode support the hypothesis of Majorana fermions in Nanowires coupled to superconductors. Expand
Evidence for Majorana bound states in an iron-based superconductor
A sharp zero-bias peak inside a vortex core that does not split when moving away from the vortex center is observed, consistent with the tunneling to a nearly pure MBS, separated from nontopological bound states. Expand
Topological superconductivity in a phase-controlled Josephson junction
This work establishes this system as a promising platform for realizing topological superconductivity and for creating and manipulating Majorana modes and probing topologicalsuperconducting phases in two-dimensional systems. Expand
New directions in the pursuit of Majorana fermions in solid state systems.
  • J. Alicea
  • Physics, Medicine
  • Reports on progress in physics. Physical Society
  • 2012
This review paper highlights recent advances in the condensed matter search for Majorana that have led many in the field to believe that this quest may soon bear fruit and discusses the most remarkable properties of condensed matter Majorana fermions-the non-Abelian exchange statistics that they generate and their associated potential for quantum computation. Expand
Quantized Majorana conductance
The observation of a quantized conductance plateau at 2e2/h in the zero-bias conductance measured in indium antimonide semiconductor nanowires covered with an aluminium superconducting shell strongly supports the existence of Majorana zero-modes in the system. Expand
Topological superconductivity and Majorana fermions in metallic surface states
Heavy metals, such as Au, Ag, and Pb, often have sharp surface states that are split by strong Rashba spin-orbit coupling. The strong spin-orbit coupling and two-dimensional nature of these surfaceExpand