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Theory for Cd3 As2 thin films in the presence of magnetic fields.
SMITH, Michael; QUITO, Victor Luiz; BURKOV, Anton; ORTH, Peter; MARTIN, Ivar.
Abstract: We present a theory for thin films of the Dirac semimetal Cd 3 As 2 in the presence of magnetic fields. We show that, above a critical thickness, specific subbands n of thin film Cd 3 As 2 are in a quantum spin Hall insulator regime and study their response to in- and out-of-plane magnetic fields. We find that sufficiently large in-plane Zeeman fields drive the system toward a 2D Dirac semimetal regime, provided the field is directed perpendicular to a high-symmetry mirror plane. For other directions, we find the Dirac points to be weakly gapped. We further investigate how the system responds to finite out-of-plane field components, both starting from the quantum spin Hall regime at small in-plane fields and from the 2D Dirac semimetal regimes at larger in-plane fields, addressing recent experimental observations in A. C. Lygo et al.
Physical Review B
v. 109, n. 15, p. 155136 - Ano: 2024
Fator de Impacto: 3,7
    @article={003192448,author = {SMITH, Michael; QUITO, Victor Luiz; BURKOV, Anton; ORTH, Peter; MARTIN, Ivar.},title={Theory for Cd3 As2 thin films in the presence of magnetic fields},journal={Physical Review B},note={v. 109, n. 15, p. 155136},year={2024}}