Home > Publications database > Observation of the Spin-Orbit Gap in Bilayer Graphene by One-Dimensional Ballistic Transport > print |
001 | 877334 | ||
005 | 20210130005015.0 | ||
024 | 7 | _ | |a 10.1103/PhysRevLett.124.177701 |2 doi |
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100 | 1 | _ | |a Banszerus, L. |0 P:(DE-HGF)0 |b 0 |
245 | _ | _ | |a Observation of the Spin-Orbit Gap in Bilayer Graphene by One-Dimensional Ballistic Transport |
260 | _ | _ | |a College Park, Md. |c 2020 |b APS |
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520 | _ | _ | |a We report on measurements of quantized conductance in gate-defined quantum point contacts in bilayer graphene that allow the observation of subband splittings due to spin-orbit coupling. The size of this splitting can be tuned from 40 to 80 μeV by the displacement field. We assign this gate-tunable subband splitting to a gap induced by spin-orbit coupling of Kane-Mele type, enhanced by proximity effects due to the substrate. We show that this spin-orbit coupling gives rise to a complex pattern in low perpendicular magnetic fields, increasing the Zeeman splitting in one valley and suppressing it in the other one. In addition, we observe a spin polarized channel of 6e2/h at high in-plane magnetic field and signatures of interaction effects at the crossings of spin-split subbands of opposite spins at finite magnetic field. |
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700 | 1 | _ | |a Libisch, F. |0 P:(DE-HGF)0 |b 9 |
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700 | 1 | _ | |a Stampfer, C. |0 P:(DE-Juel1)180322 |b 12 |e Corresponding author |
773 | _ | _ | |a 10.1103/PhysRevLett.124.177701 |g Vol. 124, no. 17, p. 177701 |0 PERI:(DE-600)1472655-5 |n 17 |p 177701 |t Physical review letters |v 124 |y 2020 |x 1079-7114 |
856 | 4 | _ | |y OpenAccess |u https://juser.fz-juelich.de/record/877334/files/PhysRevLett.124.177701.pdf |
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