Resonant coherent quantum tunneling of the magnetization of spin- systems: Spin-parity effects

1997 ◽  
Vol 55 (2) ◽  
pp. 931-936 ◽  
Author(s):  
D. García-Pablos ◽  
N. García ◽  
H. De Raedt
Keyword(s):  
Quantum Tunneling ◽  
Spin Systems ◽  
Spin Parity ◽  
Coherent Quantum

Decoherence and entanglement in coherent quantum tunneling of magnetization with dissipation

2005 ◽  
Vol 43 (1) ◽  
pp. 125-129 ◽  
Author(s):  
Yi-Hang Nie ◽  
Jun-Jun Liang ◽  
Yun-Long Shi ◽  
J.-Q. Liang
Keyword(s):  
Quantum Tunneling ◽  
Quantum Tunneling Of Magnetization ◽  
Coherent Quantum

Coherent quantum tunneling between two Bose-Einstein condensates

1996 ◽  
Vol 54 (6) ◽  
pp. R4625-R4628 ◽  
Author(s):  
M. W. Jack ◽  
M. J. Collett ◽  
D. F. Walls
Keyword(s):  
Quantum Tunneling ◽  
Bose Einstein ◽  
Coherent Quantum

scholarly journals Quantum phase interference for quantum tunneling in spin systems

2000 ◽  
Vol 61 (13) ◽  
pp. 8856-8862 ◽  
Author(s):  
J.-Q. Liang ◽  
H. J. W. Müller-Kirsten ◽  
D. K. Park ◽  
F.-C. Pu
Keyword(s):  
Quantum Tunneling ◽  
Spin Systems ◽  
Quantum Phase ◽  
Phase Interference

scholarly journals Supersymmetric spin–phonon coupling prevents odd integer spins from quantum tunneling

2021 ◽  
Vol 94 (3) ◽  
Author(s):  
Kilian Irländer ◽  
Heinz-Jürgen Schmidt ◽  
Jürgen Schnack
Keyword(s):  
Quantum Tunneling ◽  
Degrees Of Freedom ◽  
Spin Systems ◽  
Phonon Coupling ◽  
Temperature Dependent ◽  
Integer Spin ◽  
Quantum Numbers ◽  
Spin Quantum ◽  
Strong Spin

AbstractQuantum tunneling of the magnetization is a phenomenon that impedes the use of small anisotropic spin systems for storage purposes even at the lowest temperatures. Phonons, usually considered for temperature dependent relaxation of magnetization over the anisotropy barrier, also contribute to magnetization tunneling for integer spin quantum numbers. Here we demonstrate that certain spin–phonon Hamiltonians are unexpectedly robust against the opening of a tunneling gap, even for strong spin–phonon coupling. The key to understanding this phenomenon is provided by an underlying supersymmetry that involves both spin and phonon degrees of freedom.

scholarly journals Quantum tunneling and quantum-classical transitions in large spin systems

2000 ◽  
Vol 61 (13) ◽  
pp. 8639-8642 ◽  
Author(s):  
Bambi Hu ◽  
De-gang Zhang ◽  
Bo-zang Li
Keyword(s):  
Quantum Tunneling ◽  
Spin Systems ◽  
Large Spin

Theoretical study on magnetic quantum tunneling of anisotropic spin systems with magnetic field

2001 ◽  
Vol 121 (1-3) ◽  
pp. 1784-1785
Author(s):  
H. Kawabe ◽  
K. Kinugawa ◽  
H. Saito ◽  
H. Nagao ◽  
K. Yamaguchi ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Quantum Tunneling ◽  
Theoretical Study ◽  
Spin Systems
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