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| Hauptseite > Publikationsdatenbank > Impact of competing energy scales on the shell-filling sequence in elliptic bilayer graphene quantum dots > print |
| Hauptseite > Publikationsdatenbank > Impact of competing energy scales on the shell-filling sequence in elliptic bilayer graphene quantum dots > print |
| 001 | 1025623 | ||
| 005 | 20250203103421.0 | ||
| 024 | 7 | _ | |a 10.1103/PhysRevB.108.125128 |2 doi |
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| 100 | 1 | _ | |a Möller, Sören |0 P:(DE-HGF)0 |b 0 |
| 245 | _ | _ | |a Impact of competing energy scales on the shell-filling sequence in elliptic bilayer graphene quantum dots |
| 260 | _ | _ | |a Woodbury, NY |c 2023 |b Inst. |
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| 520 | _ | _ | |a We report on a detailed investigation of the shell-filling sequence in electrostatically defined elliptic bilayer graphene quantum dots (QDs) in the regime of low charge carrier occupation, N≤12, by means of magnetotransport spectroscopy and numerical calculations. We show the necessity of including both short-range electron-electron interaction and wave-function-dependent valley g-factors for understanding the overall fourfold shell-filling sequence. These factors lead to an additional energy splitting at half filling of each orbital state and different energy shifts in out-of-plane magnetic fields. Analysis of 31 different bilayer graphene (BLG) QDs reveals that both valley g-factor and electron-electron interaction-induced energy splitting increase with decreasing QD size, validating theory. However, we find that the electrostatic charging energy of such gate-defined QDs does not correlate consistently with their size, indicating complex electrostatics. These findings offer significant insights for future BLG QD devices and circuit designs. |
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| 700 | 1 | _ | |a Icking, E. |0 P:(DE-HGF)0 |b 5 |
| 700 | 1 | _ | |a Watanabe, K. |0 P:(DE-HGF)0 |b 6 |
| 700 | 1 | _ | |a Taniguchi, T. |0 P:(DE-HGF)0 |b 7 |
| 700 | 1 | _ | |a Volk, Christian |0 P:(DE-Juel1)187247 |b 8 |
| 700 | 1 | _ | |a Stampfer, C. |0 P:(DE-Juel1)180322 |b 9 |e Corresponding author |
| 773 | _ | _ | |a 10.1103/PhysRevB.108.125128 |g Vol. 108, no. 12, p. 125128 |0 PERI:(DE-600)2844160-6 |n 12 |p 125128 |t Physical review / B |v 108 |y 2023 |x 2469-9950 |
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