scholarly journals Controllable spin switch in a single-molecule magnet tunneling junction

2020 ◽  
Author(s):  
Zhengzhong Zhang ◽  
Hao Liu
Keyword(s):  
Magnetic Field ◽  
Single Molecule ◽  
Spin Current ◽  
Tunneling Junction ◽  
Metal Electrodes ◽  
Single Molecule Magnet ◽  
Molecular Orbit ◽  
Spin Polarized ◽  
New Type ◽  
Spin Switch

Abstract A new type of spin-current filter is proposed, which consists of a single-molecule magnet (SMM) coupled to two normal metal electrodes. It is shown that this tunneling junction can generate a highly spin-polarized current, whose spin polarization can be switched by the magnetic field and gate voltage applied to the SMM. Such a spin switching in the SMM tunnel junction arises from the spin-selected single electron resonant tunneling via the lowest unoccupied molecular orbit of the SMM. And the electron current spectrum in absences of external magnetic field is still spin-polarized, which can help us to judge if the molecule’s spin state has reach to the ground-state doublet |±S). This device can be realized with current technologies and may have practical use in spintronics and quantum information.PACS numbers: 72.25.-b, 75.50.Xx, 85.75.-d

scholarly journals Controllable Spin Switching in a Single-Molecule Magnetic Tunneling Junction

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Zhengzhong Zhang ◽  
Ya Wang ◽  
Haiou Wang ◽  
Hao Liu ◽  
Liming Dong
Keyword(s):  
Single Molecule ◽  
Spin Current ◽  
Tunneling Junction ◽  
Metal Electrodes ◽  
Molecular Orbit ◽  
Spin Polarized ◽  
New Type ◽  
Magnetic Tunneling ◽  
Spin Switching ◽  
Ground State Doublet

AbstractA new type of spin-current filter is proposed that consists of a single-molecule magnet (SMM) coupled to two normal metal electrodes. It is shown that this tunneling junction can generate a highly spin-polarized current, whose spin polarization can be switched by means of magnetic fields and gate voltages applied to the SMM. This spin switching in the SMM tunnel junction arises from spin-selective single-electron resonant tunneling via the lowest unoccupied molecular orbit of the SMM. The electron current spectrum is still spin polarized in the absence of an external magnetic field, which can help to judge whether the molecule’s spin state has reached the ground-state doublet $$|\pm S\rangle$$ | ± S ⟩ . This device can be realized with current technologies and may have practical use in spintronics and quantum information.

scholarly journals Controllable spin switching in a single-molecule magnetic tunneling junction

2020 ◽  
Author(s):  
Zhengzhong Zhang ◽  
Ya Wang ◽  
Haiou Wang ◽  
Hao Liu ◽  
Liming Dong
Keyword(s):  
Single Molecule ◽  
Spin Current ◽  
Tunneling Junction ◽  
Metal Electrodes ◽  
Molecular Orbit ◽  
Spin Polarized ◽  
New Type ◽  
Magnetic Tunneling ◽  
Spin Switching ◽  
Ground State Doublet

Abstract A new type of spin-current filter is proposed that consists of a single molecule magnet (SMM) coupled to two normal metal electrodes. It is shown that this tunneling junction can generate a highly spin-polarized current, whose spin polarization can be switched by means of magnetic fields and gate voltages applied to the SMM. This spin switching in the SMM tunnel junction arises from spin-selective single electron resonant tunneling via the lowest unoccupied molecular orbit of the SMM. The electron current spectrum is still spin polarized in the absence of an external magnetic field, which can help to judge whether the molecule’s spin state has reached the ground-state doublet |± S > . This device can be realized with current technologies and may have practical use in spintronics and quantum information.

Bias pulse-controlled thermal spin injector based a single-molecule magnet tunneling junction

2021 ◽  
pp. 114981
Author(s):  
Zhengzhong Zhang ◽  
Rui Bo ◽  
Chao Wang ◽  
Guang Song ◽  
Weishi Tan ◽  
...  
Keyword(s):  
Single Molecule ◽  
Tunneling Junction ◽  
Single Molecule Magnet ◽  
Bias Pulse

Synchronous Temperature and Magnetic Field Dual‐Sensing by Luminescence in a Dysprosium Single‐Molecule Magnet

2021 ◽  
pp. 2101495
Author(s):  
Rute A. S. Ferreira ◽  
Ekaterina Mamontova ◽  
Alexandre M. P. Botas ◽  
Mikhail Shestakov ◽  
Johan Vanacken ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Single Molecule ◽  
Single Molecule Magnet ◽  
Dual Sensing

Influences of DMI on spin-polarized current through a single-molecule magnet

2013 ◽  
Vol 377 (37) ◽  
pp. 2428-2431 ◽  
Author(s):  
Bo Luo ◽  
Juan Liu ◽  
Kai-Lun Yao
Keyword(s):  
Single Molecule ◽  
Single Molecule Magnet ◽  
Spin Polarized

Spin Hall Effect in a Magnetic Field

2001 ◽  
Vol 690 ◽  
Author(s):  
Shufeng Zhang
Keyword(s):  
Magnetic Field ◽  
Diffusion Equation ◽  
Electric Field ◽  
Hall Effect ◽  
Transverse Electric ◽  
Spin Current ◽  
Magnetic Semiconductor ◽  
Hall Voltage ◽  
Spin Polarized ◽  
The Magnetic Field

ABSTRACTWhen a spin-polarized current is injected into a non-magnetic semiconductor, a transverse electric field known as Hall voltage is generated. By using a macroscopic diffusion equation, we derive the Hall voltage in the presence of both spin current and magnetic field. Novel features such as oscillating Hall signals as a function of the magnetic field and geometrical dependence of Hall signals are predicted.

scholarly journals Efficient spin-current injection in single-molecule magnet junctions

AIP Advances ◽  
2018 ◽  
Vol 8 (1) ◽  
pp. 015131 ◽  
Author(s):  
Haiqing Xie ◽  
Fuming Xu ◽  
Hujun Jiao ◽  
Qiang Wang ◽  
J.-Q. Liang
Keyword(s):  
Single Molecule ◽  
Spin Current ◽  
Current Injection ◽  
Single Molecule Magnet

scholarly journals Spin current and polarization reversal through a single-molecule magnet with ferromagnetic electrodes

2012 ◽  
Vol 111 (6) ◽  
pp. 063707 ◽  
Author(s):  
Haiqing Xie ◽  
Qiang Wang ◽  
Bo Chang ◽  
Hujun Jiao ◽  
J.-Q. Liang
Keyword(s):  
Single Molecule ◽  
Spin Current ◽  
Polarization Reversal ◽  
Single Molecule Magnet ◽  
Ferromagnetic Electrodes

scholarly journals Magnetization relaxation in the single-ion magnet DySc2N@C80: quantum tunneling, magnetic dilution, and unconventional temperature dependence

2018 ◽  
Vol 20 (17) ◽  
pp. 11656-11672 ◽  
Author(s):  
D. S. Krylov ◽  
F. Liu ◽  
A. Brandenburg ◽  
L. Spree ◽  
V. Bon ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Temperature Dependence ◽  
Single Molecule ◽  
Quantum Tunneling ◽  
Magnetization Relaxation ◽  
Single Molecule Magnet ◽  
Magnetic Dilution

Quantum tunneling and relaxation of magnetization in single molecule magnet DySc2N@C80 is thoroughly studied as a function of magnetic dilution, temperature, and magnetic field.

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