位置：成果数据库 > 期刊 > 期刊详情页
分子量子点中声子辅助的Kondo效应
  • ISSN号：0253-2395
  • 期刊名称：《山西大学学报：自然科学版》
  • 时间：0
  • 分类：O411[理学—理论物理;理学—物理]
  • 作者机构：[1]中北大学理学院物理系,山西太原030051, [2]山西大学理论物理研究所,山西太原030006
  • 相关基金：基金项目：国家自然科学基金（10475053;10525418）
作者： 于慧[1], 梁九卿[2]
关键词： 铁磁电极, 电声子耦合, KONDO效应, 隧穿磁阻, ferromagnetic leads , electron＇phonon interaction , Kondo effect , TMR
中文摘要：

利用Keldysh非平衡格林函数方法讨论了与铁磁电极相连的单分子晶体管在强电子关联和电声子耦合共同作用下的量子输运特性．研究发现，当铁磁电极处于平行磁化位形时，会呈现出与反平行位形明显不同的输运行为．尤为显著的是，声子效应导致隧穿磁阻TMR随偏压在正负值间交替变化，这暗示了TMR是探索Kondo共振特征行为的一个更为有效的工具．

英文摘要：

Spin-polarized transport through single-molecule quantum dot with two ferromagnetic leads is investigated under the interplay of strong electron correlation and electron-phonon （e-ph） coupling. It is observed that the transport properties are distinctly different for the parallel magnetic configuration of electrodes in contrast to the antiparallel case. Furthermore,the tunnel magnetoresistance （TMR） alternates between the positive and the negative values along with the variation of polarization and bias voltage. The peculiar TMR line-shape observed here may serve as a more effective tool to explore the Kondo-resonance features in practical systems.

同期刊论文项目
分子磁铁量子自旋动力学及宏观量子效应
期刊论文 59
凝聚态物质中的电子输运
期刊论文 40
同项目期刊论文
Magnetic Field Effects on Quantum-Dot Spin Valves
Numerical study of the topological Anderson insulator in HgTe/CdTe quantum wells
Accumulation of opposite spins on the transverse edges of a two-dimensional electron gas in a longit
Bias-controllable intrinsic spin polarization in a quantum dot: Proposed scheme based on spin-orbit
Nature of spin Hall effect in a finite ballistic two-dimensional system with Rashba and Dresselhaus
Effects of spin-flip scattering in double quantum dots
Universal spin-Hall conductance fluctuations in two dimensions
Band structure effects on one-dimensional resonant tunneling in STM tips made of carbon nanotubes
Generating spin current using an ac magnetic field
自旋轨道耦合和自旋流的研究若干进展
Persistent spin current in nanodevices and definition of the spin current
Controllable Andreev Retroreflection and Specular Andreev Reflection in a Four-Terminal Graphene-Sup
Scanning tunneling spectroscopy of a magnetic atom on graphene in the Kondo regime
Quantum transport through a graphene nanoribbon-superconductor junction
Topological Insulator: A New Quantized Spin Hall Resistance Robust to Dephasing
Theoretical investigation of how edge states are destroyed in disordered mesoscopic samples
Electric-current-induced heat generation in a strongly interacting quantum dot in the Coulomb blocka
Heat generation by electric current in mesoscopic devices
Quantum transport through circularly coupled triple quantum dots
Response time of a normal-metal/superconductor hybrid system under a step-like pulse bias
Measuring the phonon-assisted spectral function by using a nonequilibrium three-terminal single-mole
Symmetry and transport property of spin current induced spin-Hall effect
Persistent spin current in spin-orbit coupling systems in the absence of an external magnetic field
Thermal transport in a dielectric T-shaped quantum wire
Persistent spin current in a mesoscopic hybrid ring with spin-orbit coupling
存在自旋轨道耦合的介观小环中的持续自旋流
Critical Property of the geome
Berry phase of nuclear spins i
Ground- state properties for c
.EPR spectrum via entangled st
Quantum dynamics of a vertex i
Ground state properties of fin
Controllable quantum phase tra
Interplay between anisotropic
Photon-assisted electron trans
Quantum effects of many atoms
Spin polarized localization be
Entanglement between nuclear s
Dynamics and geometric phase o
Thermal and ground-state entan
The implementation of read-in
The implementation of Grover’
Density distributions for trap
Tunneling of spinor Bose-Einst
Quantum correlation of many at
Quantum transport through two
Energy spectrum and entangleme
Field-assisted resonance tunne
Entanglement in the supermolec
Dynamics of dipolar spinor con
Quantum phase transition of en
Short-time decoherence of a qu
Entanglement dynamics in two-c
Berry Phase in Tavis_cummings
One-step generation of cluster
.Phase diagram of two-species
Quantum transport through a do
Spin current and shot noise in
Period-voltage-driven quantum
Energy spectra of D? centres q
.Quantum phase transition of t
Magnetic soliton and soliton c
Spin-polarized quantum transpo
Quantum tunneling in the adiab
Spin-polarization-dependent qu
Controllable persistent atom c
Magnetic-flux-driven quantum p
Unconventional quantum phase t
Measurement induced dephasing
Numerical simulation on tunnel
Transport of spin-polarized cu
Environment-induced disentangl
Time-evolving disentanglement
Spin-polarized transport throu
Berry phase of coupled two arbitrary spins in a time-varying magnetic field
Entanglement dynamics in two-component Bose-Einstein condensates
Entanglement in the supermolecular dimer [Mn4]2
Energy spectrum and entanglement of two tunnelcoupled Bose-Einstein condensates
Electron resonance-transmission through a driven quantum well with spin-orbit coupling
Field-assisted electron transport through a symmetric double-well structure with spin-orbit coupling and the Fano-resonance induced spin filtering
Spin-dependent tunnelling through an indirect double-barrier structure
期刊信息
  • 《山西大学学报：自然科学版》
  • 北大核心期刊（2011版）
  • 主管单位:山西省教育厅
  • 主办单位:山西大学
  • 主编：杨斌盛
  • 地址：太原市坞城路92号
  • 邮编：030006
  • 邮箱：xbbjb@sxu.edu.cn
  • 电话：0351-7010455
  • 国际标准刊号：ISSN：0253-2395
  • 国内统一刊号：ISSN：14-1105/N
  • 邮发代号:22-42
  • 获奖情况:
  • 边疆七年获山西省一级期刊荣誉（1993-1999）
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,美国化学文摘（网络版）,英国动物学记录,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）
  • 被引量:5651