Stabilization of ground-state minimal spin in disordered quantum dots

Kenji Hirose; Ned S. Wingreen

doi:10.1016/S1386-9477(02)00983-9

Stabilization of ground-state minimal spin in disordered quantum dots

Research output: Contribution to journal › Conference article › peer-review

Abstract

We investigate the ground-state spin and energy of disordered quantum dots using spin-density-functional theory. With increasing interaction strength, the probability of non-minimal spin increases, but never exceeds 50%. Within a two-orbital model, we show that the off-diagonal Coulomb matrix elements help stabilize a ground state of minimal spin by creating a low-energy hybridization of the various minimal-spin basis states.

Original language	English (US)
Pages (from-to)	79-80
Number of pages	2
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	18
Issue number	1-3
DOIs	https://doi.org/10.1016/S1386-9477(02)00983-9
State	Published - May 2003
Event	23rd International Conference on Low Temperature Physics - Hiroshima, Japan Duration: Aug 20 2002 → Aug 27 2002

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Atomic and Molecular Physics, and Optics

Keywords

Ground-state spin
Quantum dot
Spin-density-functional theory

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10.1016/S1386-9477(02)00983-9

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title = "Stabilization of ground-state minimal spin in disordered quantum dots",

abstract = "We investigate the ground-state spin and energy of disordered quantum dots using spin-density-functional theory. With increasing interaction strength, the probability of non-minimal spin increases, but never exceeds 50%. Within a two-orbital model, we show that the off-diagonal Coulomb matrix elements help stabilize a ground state of minimal spin by creating a low-energy hybridization of the various minimal-spin basis states.",

keywords = "Ground-state spin, Quantum dot, Spin-density-functional theory",

author = "Kenji Hirose and Wingreen, {Ned S.}",

year = "2003",

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doi = "10.1016/S1386-9477(02)00983-9",

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T1 - Stabilization of ground-state minimal spin in disordered quantum dots

AU - Hirose, Kenji

AU - Wingreen, Ned S.

PY - 2003/5

Y1 - 2003/5

N2 - We investigate the ground-state spin and energy of disordered quantum dots using spin-density-functional theory. With increasing interaction strength, the probability of non-minimal spin increases, but never exceeds 50%. Within a two-orbital model, we show that the off-diagonal Coulomb matrix elements help stabilize a ground state of minimal spin by creating a low-energy hybridization of the various minimal-spin basis states.

AB - We investigate the ground-state spin and energy of disordered quantum dots using spin-density-functional theory. With increasing interaction strength, the probability of non-minimal spin increases, but never exceeds 50%. Within a two-orbital model, we show that the off-diagonal Coulomb matrix elements help stabilize a ground state of minimal spin by creating a low-energy hybridization of the various minimal-spin basis states.

KW - Ground-state spin

KW - Quantum dot

KW - Spin-density-functional theory

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U2 - 10.1016/S1386-9477(02)00983-9

DO - 10.1016/S1386-9477(02)00983-9

M3 - Conference article

AN - SCOPUS:0038518680

SN - 1386-9477

VL - 18

SP - 79

EP - 80

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

IS - 1-3

T2 - 23rd International Conference on Low Temperature Physics

Y2 - 20 August 2002 through 27 August 2002

ER -

Stabilization of ground-state minimal spin in disordered quantum dots

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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