Nonuniversal Shot Noise in Disordered Quantum Wires with Channel-Number Imbalance
スポンサーリンク
概要
- 論文の詳細を見る
The number of conducting channels for one propagating direction is equal to that for the other direction in ordinary quantum wires. However, they can be imbalanced in graphene nanoribbons with zigzag edges. Employing the model system in which a degree of channel-number imbalance can be controlled, we calculate the shot-noise power at zero frequency by using the Boltzmann–Langevin approach. The shot-noise power in an ordinary diffusive conductor is one-third of the Poisson value. We show that with increasing the degree of channel-number imbalance, the universal one-third suppression breaks down and a highly nonuniversal behavior of shot noise appears.
- Physical Society of Japanの論文
- 2010-10-15
著者
-
Takane Yositake
Department Of Applied Physics Osaka City University
-
Takane Yositake
Department of Quantum Matter, Graduate School of Advanced Sciences of Matter, Hiroshima University, Higashihiroshima, Hiroshima 739-8530, Japan
関連論文
- Conductance Distribution in Disordered Quantum Wires with a Perfectly Conducting Channel(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Conductance and Its Variance of Disordered Wires with Symplectic Symmetry in the Metallic Regime(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
- Application of Cluster Variation Method to Three-Dimensional t-J Model
- Conductance of Disordered Wires with Unitary Symmetry : Role of Perfectly Conducting Channels(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Conductance Fluctuations in Disordered Wires with Perfectly Conducting Channels(Condensed matter : electronic structure and electrical, magnetic, and optical properties)
- Averaged Conductance of the Three-Edge Chalker-Coddington Model(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Distribution of Transmission Eigenvalues in Disordered Wires with Symplectic Symmetry(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Random-Matrix Approach to Quantum Electron Transport in Metallic Carbon Nanotubes
- Fluctuation Paraconductivity in Superconducting Multilead Structures above the Transition Temperature : Condensed Matter: Electronic Properties, etc.
- Conductance Fluctuations in a Superconductor-Dirty Normal Conductor-Superconductor Junction : Condensed Matter: Electronic Properties, etc.
- Semiclassical Analysis of the Ballistic Weak Localization in Chaotic Billiards:Role of Partially Time-Reversed Pairs of Paths
- Numerical Study on Josephson-Current Fluctuations in a Dirty SNS Junction : The Effect of Incomplete Andreev Reflection
- Fluctuations of the DC Josephson Current in a Superconductor-Normal Conductor-Superconductor Junction
- Quasiparticle Transport at the Interface between the Normal Conductor and the d-Wave Superconductor
- Weak Localization in Metallic Wire Systems in Contact with a Superconductor
- Magnetoconductance in Open Stadium Billiard : Quantum Analogue of Transition from Chaos to Tori
- Conductance of Normal-Superconductor Contacts Due to the Andreev Reflection
- Phase Slip in Mesoscopic Charge-Density-Wave Systems
- Influence of Small-Angle Diffraction on the Ballistic Conductanse Fluctuations in Chaotic Billiards
- Suppression of the Weak-Localization Effect due to a Domain Wall in Mesoscopic Wires of Ferromagnetic Metals : Condensed Matter: Electronic Properties, etc.
- Quantum Interference Effect on the Conductance of a Ferromagnetic Wire with a Domain Wall
- Superconducting Proximity Effect on a One-Dimensional Interacting Electron Gas
- Numerical Study on the Conductance of Normal-Superconductor Contacts
- Conductance Formula for Mesoscopic Systems with a Superconducting Segment
- Conductance Fluctuations in Small Normal and Superconductor Composite Wire Systems
- Josephson-Current Fluctuations in Dirty SNS Junctions
- Enhancement of Conductance Fluctuations in Normal Metals Sandwiched between Superconductors
- Influence of a Driven Magnetic Domain Wall on Resistivity in a Thin Ferromagnetic Wire : Condensed Matter: Electronic Properties, etc.
- Quantum Electron Transport in Disordered Wires with Symplectic Symmetry(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
- Conductance and Its Fluctuations of Mesoscopic Wires in Contact with a Superconductor
- Magnetic Field Effect on Charge Imbalance Conversion in Superconducting Wires(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Influence of Charge and Energy Imbalances on the Tunneling Current through a Superconductor-Normal Metal Junction(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Boltzmann Equations for Spin and Charge Relaxations in Superconductors(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Random-Matrix Theory of Electron Transport in Disordered Wires with Symplectic Symmetry(Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties)
- Weak Localization in Multiwall Carbon Nanotubes in a Perpendicular Magnetic Field(Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties)
- Coulomb Blockade of the Collective Current in Charge-Density-Wave Systems
- Multilevel Effect on the Josephson Current through a Quantum Dot
- Ferromagnetic Resonance Effect on Resistivity in Mesoscopic Structures
- Synchronized Phase Slips in a Mesoscopic Charge-Density-Wave System
- Influence of Electromagnetic Environment on Tunneling Current through Normal Metal-Superconductor Junctions
- Test-Particle Approach to Electron Dephasing in an Open Mesoscopic Cavity
- Pulse Control of Dephasing in Two-Level Quantum Systems(General)
- Conductance of Disordered Wires with Symplectic Symmetry : Comparison between Odd- and Even-Channel Cases
- Anomalous Behavior of the Dephasing Time in Open Diffusive Cavities
- Dephasing due to Spin-Wave Excitations in Ferromagnetic Metals
- Resistivity due to Domain Wall Excitation in Thin Wires of Ferromagnetic Metals : Condensed Matter: Electronic Properties, etc.
- Charge Imbalance Relaxation in Superconductors at Low Temperatures(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
- Electronic States and Local Density of States in Graphene with a Corner Edge Structure
- Effects of Coulomb Interaction on the Density of States in Open Chaotic Billiards
- Asymptotic Behavior of the Conductance in Disordered Wires with Perfectly Conducting Channels(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Spin Injection and Detection in a Mesoscopic Superconductor at Low Temperatures(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Quantum Nucleation of Phase Slip in Charge-Density-Wave Systems : Role of Long-Range Coulomb Interactions
- Dirac Electrons on a Sharply Edged Surface of Topological Insulators
- DMPK Equation for Transmission Eigenvalues in Metallic Carbon Nanotubes(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
- Quasiclassical Theory of the Josephson Effect in Ballistic Graphene Junctions
- Phase Relaxation Time in Open Chaotic Billiards
- Excitations in the Vortex State of Pure Type-II Superconductors
- Fluctuations of the Critical Current through Josephson Junctions with Dirty Normal Metal Barriers
- Pulse Control of Decoherence with Population Decay(General)
- Nonuniversal Shot Noise in Disordered Quantum Wires with Channel-Number Imbalance
- Pairing Correlation Effect on the Zero-Bias Tunneling Spectra of Ultrasmall Superconducting Grains
- Josephson Current through a Planar Junction of Graphene
- Anomalous Behavior of the Dephasing Time in Open Diffusive Cavities
- Josephson Current through a Metallic Carbon Nanotube in the Conductance-Quantization Regime (Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
- Phase Slip in Mesoscopic Charge-Density-Wave Systems
- Conductance Fluctuations in Disordered Wires with Perfectly Conducting Channels
- Conductance of Disordered Wires with Symplectic Symmetry : Comparison between Odd- and Even-Channel Cases(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
- Dephasing due to Spin-Wave Excitations in Ferromagnetic Metals (Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties)
- Unified Description of Dirac Electrons on a Curved Surface of Topological Insulators
- Anomalous Enhancement of the Boltzmann Conductivity in Disordered Zigzag Graphene Nanoribbons
- Pulse Control of Dephasing in Two-Level Quantum Systems(General)
- Nucleation of 2π-Phase Soliton in Charge-Density-Wave Systems(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)