TY - JOUR
T1 - Spatial imaging of two-dimensional electronic states in semiconductor quantum wells
AU - Suzuki, Kyoichi
AU - Kanisawa, K
AU - Janer, Camille
AU - Perraud, Simon
AU - Takashina, Kei
AU - Fujisawa, Toshimasa
AU - Hirayama, Yoshiro
PY - 2007/3/28
Y1 - 2007/3/28
N2 - We measure the spatial distribution of the local density of states (LDOS) at cleaved surfaces of InAs/GaSb isolated quantum wells and double quantum wells (DQWs) by low-temperature scanning tunneling spectroscopy. Distinct standing wave patterns of LDOS corresponding to subbands are observed. These LDOS patterns and subband energies agree remarkably well with simple calculations with tip-induced band bending. Furthermore, for the DQWs, coupling of electronic states between the quantum wells is also clearly observed.
AB - We measure the spatial distribution of the local density of states (LDOS) at cleaved surfaces of InAs/GaSb isolated quantum wells and double quantum wells (DQWs) by low-temperature scanning tunneling spectroscopy. Distinct standing wave patterns of LDOS corresponding to subbands are observed. These LDOS patterns and subband energies agree remarkably well with simple calculations with tip-induced band bending. Furthermore, for the DQWs, coupling of electronic states between the quantum wells is also clearly observed.
UR - http://dx.doi.org/10.1103/PhysRevLett.98.136802
UR - https://www.scopus.com/pages/publications/34047132255
U2 - 10.1103/PhysRevLett.98.136802
DO - 10.1103/PhysRevLett.98.136802
M3 - Article
SN - 0031-9007
VL - 98
JO - Physical Review Letters
JF - Physical Review Letters
IS - 13
M1 - 136802
ER -