Identification of topological superconductivity in magnetic impurity systems using bulk spin polarization
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Identification of topological superconductivity in magnetic impurity systems using bulk spin polarization. / Mashkoori, Mahdi; Pradhan, Saurabh; Bjornson, Kristofer; Fransson, Jonas; Black-Schaffer, Annica M.
I: Physical Review B, Bind 102, Nr. 10, 104501, 08.09.2020.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Identification of topological superconductivity in magnetic impurity systems using bulk spin polarization
AU - Mashkoori, Mahdi
AU - Pradhan, Saurabh
AU - Bjornson, Kristofer
AU - Fransson, Jonas
AU - Black-Schaffer, Annica M.
PY - 2020/9/8
Y1 - 2020/9/8
N2 - Magnetic impurities on the surface of Rashba spin-orbit-coupled, but otherwise conventional, superconductors provide a promising way to engineer topological superconductors with Majorana bound states as boundary modes. In this work we show that the spin-polarization in the interior of both one-dimensional impurity chains and two-dimensional islands in these systems can be used to determine the superconducting topological phase, as it changes sign exactly at the topological phase transition. Thus, spin polarization offers an alternative method to detect the topological phase in magnetic impurity chains and islands deposited on conventional superconductors, beyond the zero-energy Majorana bound states.
AB - Magnetic impurities on the surface of Rashba spin-orbit-coupled, but otherwise conventional, superconductors provide a promising way to engineer topological superconductors with Majorana bound states as boundary modes. In this work we show that the spin-polarization in the interior of both one-dimensional impurity chains and two-dimensional islands in these systems can be used to determine the superconducting topological phase, as it changes sign exactly at the topological phase transition. Thus, spin polarization offers an alternative method to detect the topological phase in magnetic impurity chains and islands deposited on conventional superconductors, beyond the zero-energy Majorana bound states.
KW - MAJORANA FERMIONS
KW - STATES
U2 - 10.1103/PhysRevB.102.104501
DO - 10.1103/PhysRevB.102.104501
M3 - Journal article
VL - 102
JO - Physical Review B
JF - Physical Review B
SN - 2469-9950
IS - 10
M1 - 104501
ER -
ID: 248851421