scholarly journals Direct spectroscopic observation of Berry-phase interference in the Ni4 single-molecule magnet

2020 ◽  
Vol 102 (22) ◽  
Author(s):  
Brendan C. Sheehan ◽  
Robert Kwark ◽  
Charles A. Collett ◽  
Thomaz A. Costa ◽  
Rafael A. Allão Cassaro ◽  
...  
Keyword(s):  
Single Molecule ◽  
Berry Phase ◽  
Spectroscopic Observation ◽  
Single Molecule Magnet ◽  
Phase Interference

scholarly journals Asymmetric Berry-Phase Interference Patterns in a Single-Molecule Magnet

2011 ◽  
Vol 106 (22) ◽  
Author(s):  
H. M. Quddusi ◽  
J. Liu ◽  
S. Singh ◽  
K. J. Heroux ◽  
E. del Barco ◽  
...  
Keyword(s):  
Single Molecule ◽  
Berry Phase ◽  
Single Molecule Magnet ◽  
Phase Interference

scholarly journals Quantum phase interference (Berry phase) in single-molecule magnets of [Mn[sub 12]][sup 2−]

2002 ◽  
Vol 91 (10) ◽  
pp. 7164 ◽  
Author(s):  
W. Wernsdorfer ◽  
M. Soler ◽  
G. Christou ◽  
D. N. Hendrickson
Keyword(s):  
Single Molecule ◽  
Berry Phase ◽  
Quantum Phase ◽  
Single Molecule Magnets ◽  
Phase Interference

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.

Quantum Tunneling and Quantum Phase Interference in a [MnII2MnIII2] Single-Molecule Magnet

2005 ◽  
Vol 127 (32) ◽  
pp. 11311-11317 ◽  
Author(s):  
Lollita Lecren ◽  
Wolfgang Wernsdorfer ◽  
Yang-Guang Li ◽  
Olivier Roubeau ◽  
Hitoshi Miyasaka ◽  
...  
Keyword(s):  
Single Molecule ◽  
Quantum Tunneling ◽  
Quantum Phase ◽  
Single Molecule Magnet ◽  
Phase Interference

Exchange-Biasing in a Dinuclear Dysprosium(III) Single-Molecule Magnet with a Large Energy Barrier for Magnetization Reversal

2019 ◽  
Author(s):  
Tian Han ◽  
Marcus J. Giansiracusa ◽  
Zi-Han Li ◽  
You-Song Ding ◽  
Nicholas F. Chilton ◽  
...  
Keyword(s):  
Single Molecule ◽  
Magnetization Reversal ◽  
Energy Barrier ◽  
Magnetic Hysteresis ◽  
Large Energy ◽  
Magnetic Studies ◽  
Bridging Ligands ◽  
Single Molecule Magnet ◽  
Exchange Biasing

A dichlorido-bridged dinuclear dysprosium(III) single-molecule magnet [Dy<sub>2</sub>L<sub>2</sub>(<i>µ</i>-Cl)<sub>2</sub>(THF)<sub>2</sub>] has been made using a diamine-bis(phenolate) ligand, H<sub>2</sub>L. Magnetic studies show an energy barrier for magnetization reversal (<i>U</i><sub>eff</sub>) around 1000 K. Exchange-biasing effect is clearly seen in magnetic hysteresis with steps up to 4 K. <i>Ab</i> initio calculations exclude the possibility of pure dipolar origin of this effect leading to the conclusion that super-exchange <i>via</i> the chloride bridging ligands is important.

Correlating Blocking Temperatures in Single Molecule Magnets with Raman Relaxation

2018 ◽  
Author(s):  
Marcus J. Giansiracusa ◽  
Andreas Kostopoulos ◽  
George F. S. Whitehead ◽  
David Collison ◽  
Floriana Tuna ◽  
...  
Keyword(s):  
Relaxation Time ◽  
Single Molecule ◽  
Energy Barrier ◽  
Thermal Relaxation ◽  
Relaxation Mechanism ◽  
Blocking Temperature ◽  
Single Molecule Magnets ◽  
Single Molecule Magnet ◽  
Key Parameter

We report a six coordinate DyIII single-molecule magnet<br>(SMM) with an energy barrier of 1110 K for thermal relaxation of<br>magnetization. The sample shows no retention of magnetization<br>even at 2 K and this led us to find a good correlation between the<br>blocking temperature and the Raman relaxation regime for SMMs.<br>The key parameter is the relaxation time (𝜏<sub>switch</sub>) at the point where<br>the Raman relaxation mechanism becomes more important than<br>Orbach.

scholarly journals Solid‐State Near‐Infrared Circularly Polarized Luminescence from Chiral YbIII‐Single‐Molecule Magnet

2021 ◽  
Author(s):  
Fabrice Pointillart ◽  
Bertrand Lefeuvre ◽  
Carlo Andrea Mattei ◽  
Jessica Flores Gonzalez ◽  
Frédéric Gendron ◽  
...  
Keyword(s):  
Solid State ◽  
Single Molecule ◽  
Near Infrared ◽  
Circularly Polarized ◽  
Single Molecule Magnet ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence

Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: a Dy2 single molecule magnet with a high energy barrier

2021 ◽  
Author(s):  
Matilde Fondo ◽  
Julio Corredoira-Vázquez ◽  
Ana M. Garcia-Deibe ◽  
Jesus Sanmartin Matalobos ◽  
Silvia Gómez-Coca ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Single Molecule ◽  
Energy Barrier ◽  
Magnetic Relaxation ◽  
High Energy ◽  
Single Molecule Magnet ◽  
High Energy Barrier ◽  
Slow Magnetic Relaxation

Dinuclear [M(H3L1,2,4)]2 (M = Dy, Dy2; M = Ho, Ho2) complexes were isolated from an heptadentate aminophenol ligand. The crystal structures of Dy2·2THF, and the pyridine adducts Dy2·2Py and Ho2·2Py,...

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