New Shell Structures and Their Ground Electronic States in Spherical Quantum Dots (II) under Magnetic Field
スポンサーリンク
概要
- 論文の詳細を見る
We theoretically studied the electronic structure of the three-dimensional spherical parabolic quantum dot (3D-SPQD) under a magnetic field. We obtained the quantum dot orbitals (QDOs) and determined the ground state by using the extended UHF approach where the expectation values of the $z$ component of the total orbital angular momentum $\langle\hat{L}_{z}\rangle$ are conserved during the scf-procedure. The single-electron treatment predicts that the applied magnetic field (B) creates $k$-th new shells at the magnetic field of $B_{k}=k(k+2)/(k+1)\omega_{0}$ with the shell-energy interval of $\hbar\omega_{0}/(k+1)$, where $\omega_{0}(=\hbar/m^{*}l_{0}^{2})$ is the characteristic frequency originating from the spherical parabolic confinement potential. These shells are formed by the level crossing among multiple QDOs. The interelectron interaction breaks the simple level crossing but causes complicated dependences among the total energy, the chemical potential and their differences (magic numbers) with the magnetic field or the number of confinement electrons. The ground state having a higher spin multiplicity is theoretically predicted on the basis of the quasi-degeneracies of the QDOs around these shells.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2005-04-15
著者
-
TAMURA Hiroyuki
Advanced Research Institute for Science and Engineering, Waseda University
-
Asari Yusuke
Department Of Material Science School Of Science And Engineering Waseda University
-
Takeda Kyozaburo
Department Of Materials Science And Engineering School Of Science And Engineering Waseda University
-
Tamura Hiroyuki
Advanced Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
-
Takeda Kyozaburo
Department of Material Science, School of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
-
Takeda Kyozaburo
Department of Electrical Engineering and Bioscience, Graduate School of Advanced Science and Engineering, Waseda University, Shinjuku, Tokyo 169-8555, Japan
-
Asari Yusuke
Department of Material Science, School of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
関連論文
- First-principles Study on the Stable Molecular Structures of Disulfide Peptide Nanotubues
- Phenomenological Theory of Semiconductor Epitaxial Growth with Misfit-Dislocations
- 四元混晶カルコゲナイド系の電子構造に関する理論研究
- New Shell Structures and Their Ground Electronic States in Spherical Quantum Dots (II) under Magnetic Field
- Hund's First and Second Rules in Spherical Quantum Dots (I) in the Zero-Magnetic Field
- Molecular Dynamics Approach of Ion Channeling through Peptide Nanotubes
- Theoretical Possibility of the Spin Multi-Phases in the Heteroatom-Eaten π Network System
- Ground State Instability in Spin Polarization for Electrons Confined in Two-Dimensional Square Quantum Dots
- Theoretical Study on Amphi-Ionophorability of Peptide Nanorings
- Theoretical Studies on Electronic Structures of Polypeptide Chains
- Electronic Structures of Polyheterole Monomers, Oligomers, Polymers and Their Block Copolymers
- First-Principles Study on Electronic Structures of Protein Nanotubes
- Electronic Structures of Protein Nanotubes
- New Shell Structures and Their Ground Electronic States in Spherical Quantum Dots (II) under Magnetic Field
- Hund's First and Second Rules in Spherical Quantum Dots (I) in the Zero-Magnetic Field
- Difference in Self-Assembling Morphology of Peptide Nanorings
- Resonating Hartree–Fock Approach for Electrons Confined in Two Dimentional Square Quantum Dots
- First-Principles Study of Time-Dependent Phenomena in Photon-Assisted Tunneling: I. An Electron Injected into Two-Dimensional Lozenge Quantum Dot
- Electronic and Molecular Structures of Polyheteroles: II. Aromaticity and Quinoidicity
- IR Study on Stacking Manner of Peptide Nanorings in Peptide Nanotubes
- Theoretical Prediction and Atomic Force Microscope Observations of the Protein Nanotube Consisting of Homo-l-Amino Acid Penta-Peptide Nanorings
- Theoretical Studies on Proton Transfer in Ammonium Nitrate Monomer and Dimer
- Time-Dependent Ballistic Phenomena of Electron Injected into Half-Ellipse Confined Room
- Theoretical Studies on Proton Transfer in Ammonium Nitrate Monomer and Dimer (Plasmas, applied atomic and molecular physics, and applied nuclear physics)