Suppression of 2π phase-slip due to hidden zero modes in one dimensional topological superconductors
نویسندگان
چکیده
David Pekker, Chang-Yu Hou, Doron L. Bergman, Sam Goldberg, İnanç Adagideli, Fabian Hassler Department of Physics, California Institute of Technology, Pasadena, CA 91125 Department of Physics and Astronomy, University of California at Riverside, Riverside, CA 92521 Faculty of Engineering and Natural Sciences, Sabanci University, Orhanli-Tuzla, Istanbul, Turkey Institute for Quantum Information, RWTH Aachen University, 52056 Aachen, Germany (Dated: September 12, 2012)
منابع مشابه
Inducing time-reversal-invariant topological superconductivity and fermion parity pumping in quantum wires.
We propose a setup to realize time-reversal-invariant topological superconductors in quantum wires, proximity coupled to conventional superconductors. We consider a model of quantum wire with strong spin-orbit coupling and proximity coupling to two s-wave superconductors. When the relative phase between the two superconductors is ϕ=π a Kramers pair of Majorana zero modes appears at each edge of...
متن کاملخواص ساختاری، الکترونی و دینامیک شار ابررسانای Gd (Ba2-x) Cu3O7+δ
The Gd(Ba2-xPrx)Cu3O single phase polycrystalline samples with 0.00 ≤ x ≤ 1.00 were investigated for structural, electronic and flux dynamic properties. An unusual hump on the resistivity vs. temperature curve of the samples has been observed for particular values of Pr doping. We have found that the Ba atom substitution at the rare earth site could lead to superconductivity in some parts of ...
متن کاملTopological Defects and Gapless Modes in Insulators and Superconductors
We develop a unified framework to classify topological defects in insulators and superconductors described by spatially modulated Bloch and Bogoliubov de Gennes Hamiltonians.We consider Hamiltonians H(k,r) that vary slowly with adiabatic parameters r surrounding the defect and belong to any of the ten symmetry classes defined by time-reversal symmetry and particle-hole symmetry. The topological...
متن کاملTopological phases of quasi-one-dimensional fermionic atoms with a synthetic gauge field
We theoretically investigate the effect of intertube tunneling in topological superfluid phases of a quasi-one-dimensional Fermi gas with a Rashba-type spin–orbit interaction. It is shown that the effective Hamiltonian is analogous to that of a nanowire topological superconductor with multibands. Using a hidden mirror symmetry in the system, we introduce a new topological number that ensures th...
متن کاملTopological Majorana and Dirac zero modes in superconducting vortex cores.
We provide an argument based on flux insertion to show that certain superconductors with a nontrivial topological invariant have protected zero modes in their vortex cores. This argument has the flavor of a two-dimensional index theorem and applies to disordered systems as well. It also provides a new way of understanding the zero modes in the vortex cores of a spinless px+ipy superconductor. A...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2012