Hole-Doped Semiconductor Nanowire on Top of an s-Wave Superconductor: A New and Experimentally Accessible System for Majorana Fermions
Li Mao, Ming Gong, E. Dumitrescu, Sumanta Tewari, Chuanwei Zhang
DOI 10.1103/PhysRevLett.108.177001 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
Majorana fermions were envisioned by Majorana in 1935 to describe neutrinos. Recently, it has been shown that they can be realized even in a class of electron-doped semiconductors, on which ordinary s-wave superconductivity is proximity induced, provided the time reversal symmetry is broken by an external Zeeman field above a threshold. Here we show that in a hole-doped semiconductor nanowire the threshold Zeeman field for Majorana fermions can be very small for some magic values of the hole density. In contrast to the electron-doped systems, smaller Zeeman fields and much stronger spin-orbit coupling and effective mass of holes allow the hole-doped systems to support Majorana fermions in a parameter regime which is routinely realized in current experiments.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| InAs Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Effective long-range pairing and hopping in topological nanowires weakly coupled to s-wave superconductors
similarity 0.96Huaiqiang Wang et al.
Source status unknown — claims are unverified
Millimeter-Wave Superconducting Qubit
similarity 0.95Alexander Anferov et al.
Source status unknown — claims are unverified
Proposal for realizing Majorana fermions in chains of magnetic atoms on a superconductor
similarity 0.95S. Nadj-Perge et al.
Source status unknown — claims are unverified
Electrically tunable topological superconductivity and Majorana fermions in two dimensions
similarity 0.94Jing Wang
Source status unknown — claims are unverified
Spin-wave confinement in a hybrid superconductor-ferrimagnet nanostructure
similarity 0.94Julia Kharlan et al.
Source status unknown — claims are unverified
Microwave absorption in s- and d-wave disordered superconductors
similarity 0.94Mai Suan Li
Source status unknown — claims are unverified