TY - JOUR
T1 - Large zeeman splitting in out-of-plane magnetic field in a double-layer quantum point contact
AU - Terasawa, Daiju
AU - Norimoto, Shota
AU - Arakawa, Tomonori
AU - Ferrier, Meydi
AU - Fukuda, Akira
AU - Kobayashi, Kensuke
AU - Hirayama, Yoshiro
N1 - Funding Information:
Acknowledgment The authors express their gratitude to K. Muraki and T. Saku of the NTT basic research laboratories and A. Sawada for providing a high-mobility sample. This study was supported by the JSPS KAKENHI (JP15K17680, JP15H05854, JP18H01815, JP19H05826, JP19H00656).
Funding Information:
The authors express their gratitude to K. Muraki and T. Saku of the NTT basic research laboratories and A. Sawada for providing a high-mobility sample. This study was supported by the JSPS KAKENHI (JP15K17680, JP15H05854, JP18H01815, JP19H05826, JP19H00656).
Publisher Copyright:
© 2021 The Physical Society of Japan
PY - 2021
Y1 - 2021
N2 - In this study, we observe that the conductance of a quantum point contact on a GaAs=AlGaAs double quantum well depends significantly on the magnetic field perpendicular to the two-dimensional electron gas. In the presence of the magnetic field, the subband edge splitting due to the Zeeman energy reaches 0.09 meV at 0.16 T, thereby suggesting an enhanced g-factor. The estimated g-factor enhancement is 17.5 times that of the bare value. It is considered that a low electron density and high mobility makes it possible to reach a strong many-body interaction regime in which this type of strong enhancement in g-factor can be observed.
AB - In this study, we observe that the conductance of a quantum point contact on a GaAs=AlGaAs double quantum well depends significantly on the magnetic field perpendicular to the two-dimensional electron gas. In the presence of the magnetic field, the subband edge splitting due to the Zeeman energy reaches 0.09 meV at 0.16 T, thereby suggesting an enhanced g-factor. The estimated g-factor enhancement is 17.5 times that of the bare value. It is considered that a low electron density and high mobility makes it possible to reach a strong many-body interaction regime in which this type of strong enhancement in g-factor can be observed.
UR - http://www.scopus.com/inward/record.url?scp=85101324182&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85101324182&partnerID=8YFLogxK
U2 - 10.7566/JPSJ.90.024709
DO - 10.7566/JPSJ.90.024709
M3 - Article
AN - SCOPUS:85101324182
SN - 0031-9015
VL - 90
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 2
M1 - 024709
ER -