[qmeso-seminar] семинар 3 декабря

[Quantum Mesoscopics Dept.]

СЕМИНАР СЕКТОРА КВАНТОВОЙ МЕЗОСКОПИКИ

пятница 3 декабря, 15:00, ИТФ


Michael Rampp (KIT, Germany)

Topologically enabled superconductivity


Majorana zero modes are a much sought-after consequence of one-dimensional topological superconductivity. Here we show
that, in turn, zero modes accompanying dynamical instanton events strongly enhance - in some cases even enable -
superconductivity. We find that the dynamics of a one-dimensional topological triplet superconductor is governed by a
theta-term in the action. For isotropic triplets, this term enables algebraic charge-2e superconductivity, which is
destroyed by fluctuations in non-topological superconductors. For anisotropic triplets, zero modes suppress quantum
phase slips and stabilize superconductivity over a large region of the phase diagram. We present predictions of
correlation functions and thermodynamics for states of topologically enhanced superconductivity.

(Трансляция: <a href="https://zoom.us/j/96948399564?pwd=RXlKbW96Qm1tZEV6SHB0Q2JYeTdrdz09">Zoom</a>)

подробнее: http://qmeso.itp.ac.ru/seminars.php?abstract=true