Presentation Information
[20p-A301-10]Nuclear quadrupolar effect on in-plane nuclear field formation investigated by time-resolved Hanle measurements
〇Reina Kaji1, Sota Yamamoto1, Satoru Adachi1 (1.Hokkaido Univ.)
Keywords:
quantum dot,nuclear quadrupole interaction,nuclear spin polarization
In self-assembled quantum dots formed by strain-driven process, several strange phenomena, which are related to nuclear quadrupolar interactions caused by residual strain, have been reported, so far. One of them is the "anomalous Hanle effect," in which a nuclear field is generated to compensate for the applied transverse magnetic field and its direction is perpendicular to the photo-injected electron spins. We have identified the origin of the anomalous Hanle effect through time-integrated and time-resolved photo-luminescence measurements, as well as numerical calculations.