Magnetic manipulation of topological states in p-wave superconductors
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Magnetic manipulation of topological states in p-wave superconductors. / Mercaldo, Maria Teresa; Cuoco, Mario; Kotetes, Panagiotis.
I: Physica B: Condensed Matter, Bind 536, 2018, s. 730-733.Publikation: Bidrag til tidsskrift › Konferenceartikel › Forskning › fagfællebedømt
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TY - GEN
T1 - Magnetic manipulation of topological states in p-wave superconductors
AU - Mercaldo, Maria Teresa
AU - Cuoco, Mario
AU - Kotetes, Panagiotis
N1 - [Qdev]
PY - 2018
Y1 - 2018
N2 - Substantial experimental investigation has provided evidence for spin-triplet pairing in diverse classes of materials and in a variety of artificial heterostructures. One of the fundamental challenges in this framework is how to manipulate the topological behavior of p-wave superconductors (PSC). In this work we investigate the magnetic field response of one-dimensional (1d) PSCs and we focus on the relation between the structure of the Cooper pair spin-configuration and the occurrence of topological phases with an enhanced number N of Majorana fermions per edge. The topological phase diagram, consisting of phases harboring Majorana modes, becomes significantly modified when one tunes the strength of the applied field, the direction of the d-vector and allows for long range hopping amplitudes in the 1d PSC. We find transitions between phases with different number N of Majorana fermions per edge and we show how they can be both induced by a variation of the hopping strength and a spin rotation of d.
AB - Substantial experimental investigation has provided evidence for spin-triplet pairing in diverse classes of materials and in a variety of artificial heterostructures. One of the fundamental challenges in this framework is how to manipulate the topological behavior of p-wave superconductors (PSC). In this work we investigate the magnetic field response of one-dimensional (1d) PSCs and we focus on the relation between the structure of the Cooper pair spin-configuration and the occurrence of topological phases with an enhanced number N of Majorana fermions per edge. The topological phase diagram, consisting of phases harboring Majorana modes, becomes significantly modified when one tunes the strength of the applied field, the direction of the d-vector and allows for long range hopping amplitudes in the 1d PSC. We find transitions between phases with different number N of Majorana fermions per edge and we show how they can be both induced by a variation of the hopping strength and a spin rotation of d.
KW - Magnetic effects
KW - P-wave superconductors
KW - Topological phases
U2 - 10.1016/j.physb.2017.11.007
DO - 10.1016/j.physb.2017.11.007
M3 - Conference article
AN - SCOPUS:85033779398
VL - 536
SP - 730
EP - 733
JO - Physica B: Physics of Condensed Matter & C: Atomic, Molecular and Plasma Physics, Optics
JF - Physica B: Physics of Condensed Matter & C: Atomic, Molecular and Plasma Physics, Optics
SN - 0921-4526
ER -
ID: 196204423