Density functional for the ground-state energy of artificial two-electron atoms with harmonic confinement

2008 ◽  
Vol 42 (2) ◽  
pp. 025001 ◽  
Author(s):  
T Gál ◽  
N H March
Keyword(s):  
Ground State Energy ◽  
Ground State ◽  
Density Functional ◽  
State Energy ◽  
Harmonic Confinement

scholarly journals GROUND-STATE ENERGY AND COMPRESSIBILITY OF A DISORDERED TWO-DIMENSIONAL ELECTRON GAS

2007 ◽  
Vol 21 (13n14) ◽  
pp. 2134-2144 ◽  
Author(s):  
B. TANATAR ◽  
A. L. SUBAŞI ◽  
K. ESFARJANI ◽  
S. M. FAZELI
Keyword(s):  
Ground State Energy ◽  
Ground State ◽  
Density Functional ◽  
State Energy ◽  
Critical Density ◽  
Electron System ◽  
Local Spin Density Approximation ◽  
Two Dimensional ◽  
Electron Systems ◽  
Dimensional Electron Gas

Two-dimensional (2D) electron systems in the presence of disorder are of interest in connection with the observed metal-insulator transition in such systems. We use density functional theory in its local-spin density approximation (LSDA) to calculate the ground-state energy of a 2D electron system in the presence of remote charged impurities which up on averaging provides disorder. The inverse compressibility calculated from the ground-state energy exhibits a minimum at a critical density controlled by the disorder strength. Our findings are in agreement with experimental results.

The ground state energy of the ±J spin glass from the genetic algorithm

1994 ◽  
Vol 4 (9) ◽  
pp. 1281-1285 ◽  
Author(s):  
P. Sutton ◽  
D. L. Hunter ◽  
N. Jan
Keyword(s):  
Genetic Algorithm ◽  
Spin Glass ◽  
Ground State Energy ◽  
Ground State ◽  
State Energy

POLARON IN A QUANTUM DOT UNDER AN ELECTRIC FIELD

2007 ◽  
Vol 21 (24) ◽  
pp. 1635-1642
Author(s):  
MIAN LIU ◽  
WENDONG MA ◽  
ZIJUN LI
Keyword(s):  
Quantum Dot ◽  
Electric Field ◽  
Field Intensity ◽  
Ground State Energy ◽  
Ground State ◽  
Electric Field Intensity ◽  
State Energy ◽  
Theoretical Study ◽  
The Moment ◽  
Transformation Methods

We conducted a theoretical study on the properties of a polaron with electron-LO phonon strong-coupling in a cylindrical quantum dot under an electric field using linear combination operator and unitary transformation methods. The changing relations between the ground state energy of the polaron in the quantum dot and the electric field intensity, restricted intensity, and cylindrical height were derived. The numerical results show that the polar of the quantum dot is enlarged with increasing restricted intensity and decreasing cylindrical height, and with cylindrical height at 0 ~ 5 nm , the polar of the quantum dot is strongest. The ground state energy decreases with increasing electric field intensity, and at the moment of just adding electric field, quantum polarization is strongest.

Sign in / Sign up

Export Citation Format

Share Document