TY - JOUR
T1 - Excitonic Aharonov-Bohm effect in isotopically pure 70Ge/Si self-assembled type-II quantum dots
AU - Miyamoto, Satoru
AU - Moutanabbir, Oussama
AU - Ishikawa, Toyofumi
AU - Eto, Mikio
AU - Haller, Eugene E.
AU - Sawano, Kentarou
AU - Shiraki, Yasuhiro
AU - Itoh, Kohei M.
PY - 2010/8/17
Y1 - 2010/8/17
N2 - We report on a magnetophotoluminescence study of isotopically pure 70Ge/Si self-assembled type-II quantum dots. Oscillatory behaviors attributed to the Aharonov-Bohm effect are simultaneously observed for the emission energy and intensity of excitons subject to an increasing magnetic field. When the magnetic flux penetrates through the ringlike trajectory of an electron moving around each quantum dot, the ground state of an exciton experiences a change in its angular momentum. Our results provide the experimental evidence for the phase coherence of localized electron wave functions in group-IV Ge/Si self-assembled quantum structures.
AB - We report on a magnetophotoluminescence study of isotopically pure 70Ge/Si self-assembled type-II quantum dots. Oscillatory behaviors attributed to the Aharonov-Bohm effect are simultaneously observed for the emission energy and intensity of excitons subject to an increasing magnetic field. When the magnetic flux penetrates through the ringlike trajectory of an electron moving around each quantum dot, the ground state of an exciton experiences a change in its angular momentum. Our results provide the experimental evidence for the phase coherence of localized electron wave functions in group-IV Ge/Si self-assembled quantum structures.
UR - http://www.scopus.com/inward/record.url?scp=77957585644&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77957585644&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.82.073306
DO - 10.1103/PhysRevB.82.073306
M3 - Article
AN - SCOPUS:77957585644
SN - 1098-0121
VL - 82
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
IS - 7
M1 - 073306
ER -