Electromagnetic superradiance from single-molecule magnets in the presence of a classical driving magnetic field

2008 ◽  
Vol 77 (9) ◽  
Author(s):  
I. D. Tokman ◽  
V. I. Pozdnjakova ◽  
G. A. Vugalter ◽  
A. V. Shvetsov
Keyword(s):  
Magnetic Field ◽  
Single Molecule ◽  
Single Molecule Magnets

Magnetic field and dilution effects on the slow relaxation of {Er3} triangle-based arsenotungstate single-molecule magnets

2020 ◽  
Vol 49 (35) ◽  
pp. 12458-12465 ◽  
Author(s):  
Hanhan Chen ◽  
Lin Sun ◽  
Jinpeng Zhang ◽  
Zikang Xiao ◽  
Pengtao Ma ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Single Molecule ◽  
Magnetic Relaxation ◽  
Slow Relaxation ◽  
Relaxation Processes ◽  
Single Molecule Magnets ◽  
Thermally Activated ◽  
Slow Magnetic Relaxation ◽  
Dilution Effects

Triangular {Er3} cluster containing POM exhibits field-induced two thermally activated relaxation processes. Whereas, the diamagnetic dilution sample indicates slow magnetic relaxation with the QTM being partially suppressed.

scholarly journals Electro-activity and magnetic switching in lanthanide-based single-molecule magnets

2019 ◽  
Vol 6 (12) ◽  
pp. 3398-3417 ◽  
Author(s):  
Olivier Cador ◽  
Boris Le Guennic ◽  
Fabrice Pointillart
Keyword(s):  
Magnetic Field ◽  
Single Molecule ◽  
Magnetic Behaviour ◽  
Light Irradiation ◽  
Redox Processes ◽  
Single Molecule Magnets ◽  
Magnetic Switching

The present work reviews switching of single-molecule magnetic behaviour achieved through various stimuli such as temperature, light irradiation, redox processes, solvation/desolvation, and magnetic field.

Magnetic-Field-Induced Freezing of Spin Correlations in Networked System of [Mn4] Single-Molecule Magnets

2008 ◽  
Vol 77 (7) ◽  
pp. 073708 ◽  
Author(s):  
Satoshi Yamashita ◽  
Tatsuya Fujisaki ◽  
Yasuhiro Nakazawa ◽  
Masaharu Oguni ◽  
Kazuya Nakata ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Single Molecule ◽  
Single Molecule Magnets ◽  
Spin Correlations ◽  
Networked System

scholarly journals Thermostability and photoluminescence of Dy(iii) single-molecule magnets under a magnetic field

2016 ◽  
Vol 7 (8) ◽  
pp. 5020-5031 ◽  
Author(s):  
Ye Bi ◽  
Cheng Chen ◽  
Yi-Fang Zhao ◽  
Yi-Quan Zhang ◽  
Shang-Da Jiang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Single Molecule ◽  
Single Molecule Magnets

Efficient enhancement of magnetic anisotropy by optimizing the ligand-field in a typically tetranuclear dysprosium cluster

2015 ◽  
Vol 44 (17) ◽  
pp. 8150-8155 ◽  
Author(s):  
Jiang Liu ◽  
Yan-Cong Chen ◽  
Zhong-Xia Jiang ◽  
Jun-Liang Liu ◽  
Jian-Hua Jia ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Magnetic Anisotropy ◽  
Single Molecule ◽  
Thermal Energy ◽  
Ligand Field ◽  
Energy Barriers ◽  
Single Molecule Magnets ◽  
Applied External Magnetic Field

Two tetranuclear dysprosium single molecule magnets under a zero applied external magnetic field showing high thermal energy barriers which are among the highest within the reported tetranuclear lanthanide-based SMMs.

QUALITATIVE COMPARISON OF THE THERMODYNAMICS OF Mn12-ac AND Fe8 MOLECULE MAGNETS FOR Dβ ~ 0.031

2011 ◽  
Vol 25 (15) ◽  
pp. 1281-1291
Author(s):  
M. T. THOMAZ ◽  
ONOFRE ROJAS ◽  
E. V. CORRÊA-SILVA
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Specific Heat ◽  
Excited States ◽  
Single Molecule ◽  
Easy Axis ◽  
Unexpected Result ◽  
Single Molecule Magnets ◽  
Qualitative Comparison ◽  
Percentage Difference

The magnetization and the specific heat of two single molecule magnets (SMM) with spin-10, Mn 12- ac and Fe 8, are compared for Dβ ~ 0.031. The rhombic term in the Fe 8 molecule makes the x-component of its magnetization to be larger than that of the Mn 12- ac molecule. The axial symmetry of the Mn 12- ac favors the z-component of its magnetization, in comparison to the Fe 8 molecule. For T ≳ 18 K, the specific heat of the Mn 12- ac is large (80%, at most) than that of the Fe 8, at the same temperature. The corrections from the S = 9 excited states of these SMM's do not invalidate our results. An unexpected result occurs when the angle between the easy-axis and the external magnetic field equals π/4: the aforementioned percentage difference of the specific heat reaches 3% for D β ≲ 0.025 and h/k ∈[1.93, 2.04], when they are compared at distinct temperatures [Formula: see text]. This small percentage difference also happens for the average specific heat of both SMM's at those temperatures and h/D Mn ∈ [1.97, 2.1].

Berry-phase blockade and oscillations in single-molecule magnets Mn12 and Fe8 coupled to polarized leads

2019 ◽  
Vol 34 (01) ◽  
pp. 2050005
Author(s):  
Haiyan Yao ◽  
Feng Chi ◽  
Liming Liu
Keyword(s):  
Magnetic Field ◽  
Single Molecule ◽  
Coulomb Blockade ◽  
Berry Phase ◽  
Transverse Magnetic ◽  
Quantum Spin ◽  
Destructive Interference ◽  
Single Molecule Magnets ◽  
Phase Interference ◽  
Coulomb Blockade Regime

We have studied the Berry-phase interference in single-molecule magnets [Formula: see text] and [Formula: see text] coupled to polarized electrodes in the Coulomb blockade regime under external magnetic field. We show that for the oppositely fully polarized leads, the current is completely blockaded as a consequence of the topologically quenched tunnel splitting, which is called as Berry-phase blockade; whereas for the partially polarized leads, the current oscillates periodically with increasing external transverse magnetic field (Berry-phase oscillations). The reason is that different quantum spin tunneling trajectories can combine and give rise to either constructive or destructive interference effects.

Magnetic Relaxation of Single-Molecule Magnets in an External Magnetic Field: An Ising Dimer of a Terbium(III)-Phthalocyaninate Triple-Decker Complex

2010 ◽  
Vol 17 (1) ◽  
pp. 117-122 ◽  
Author(s):  
Keiichi Katoh ◽  
Takashi Kajiwara ◽  
Motohiro Nakano ◽  
Yasuhiro Nakazawa ◽  
Wolfgang Wernsdorfer ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Single Molecule ◽  
Magnetic Relaxation ◽  
Single Molecule Magnets
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