Quantum phases of solid-state electron systems can sustain exotic phenomena and a very rich spin physics. We utilize model solid theory to show that Ge1 xSnx alloys, an emerging group IV semiconductor, can be engineered into heterostructures that demonstrate a broken-gap alignment. Furthermore, the eight band kp method is used to disclose a quantum spin Hall phase in heterojunctions that accommodates the existence of gate controlled chiral edge states. This proposal introduces a practical silicon based architecture that spontaneously sustains topological properties, while being compatible with the high volume manufacture of semiconductor technologies.

Ferrari, B., Marcantonio, F., Murphy-Armando, F., Virgilio, M., Pezzoli, F. (2023). Quantum spin Hall phase in GeSn heterostructures on silicon. PHYSICAL REVIEW RESEARCH, 5(2) [10.1103/PhysRevResearch.5.L022035].

Quantum spin Hall phase in GeSn heterostructures on silicon

Ferrari B. M.;Pezzoli F.
2023

Abstract

Quantum phases of solid-state electron systems can sustain exotic phenomena and a very rich spin physics. We utilize model solid theory to show that Ge1 xSnx alloys, an emerging group IV semiconductor, can be engineered into heterostructures that demonstrate a broken-gap alignment. Furthermore, the eight band kp method is used to disclose a quantum spin Hall phase in heterojunctions that accommodates the existence of gate controlled chiral edge states. This proposal introduces a practical silicon based architecture that spontaneously sustains topological properties, while being compatible with the high volume manufacture of semiconductor technologies.
Articolo in rivista - Articolo scientifico
GeSN, quantum spin hall
English
2023
5
2
L022035
open
Ferrari, B., Marcantonio, F., Murphy-Armando, F., Virgilio, M., Pezzoli, F. (2023). Quantum spin Hall phase in GeSn heterostructures on silicon. PHYSICAL REVIEW RESEARCH, 5(2) [10.1103/PhysRevResearch.5.L022035].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/459399
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