9,803 research outputs found
A note on the proof of magnetic flux quantization from ODLRO
It is noticed that the excellent proof of the connection of magnetic flux
quantization and off-diagonal long range order (ODLRO) presented recently by
Nieh, Su and Zhao suffers from an imperfection, namely, the f-factors in the
case of finite translation do not satisfy , which was employed
in the proof. A corrected proof is proposed to remedy this point.Comment: 6 pages, LATEX, no figure
The transport properties of Floquet topological superconductors at the transition from the topological phase to the Anderson localized phase
The Floquet topological superconducting state is a nonequilibrium
time-periodic state hosting Majorana fermions. We study its transport
properties by using the Kitaev model with time-periodic incommensurate
potentials, which experiences phase transition from the Floquet topological
superconducting phase to the Anderson localized phase with increasing driving
strength. We study both the real time dynamics of the current and the
non-analytic behavior of the tunneling conductance at the transition.
Especially, we find that the tunneling conductance changes continuously at the
transition, being a finite value in the presence of Floquet Majorana fermions,
but dropping to zero as the Majorana fermions vanish. For a special choice of
parameters, the Majorana fermions revive at larger driving strength,
accompanied by the revival of conductances.Comment: 8 pages, 5 figure
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