Reentrant ferromagnetism of the disordered square Ising spin lattice in an external magnetic field

1992 ◽  
Vol 117 (1-2) ◽  
pp. 126-132 ◽  
Author(s):  
Bach Thanh Cong
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Spin Lattice ◽  
Ising Spin

scholarly journals MINIMIZATION OF NONRESONANT EFFECTS IN A SCALABLE ISING SPIN QUANTUM COMPUTER

2004 ◽  
Vol 02 (03) ◽  
pp. 379-392 ◽  
Author(s):  
G. P. BERMAN ◽  
D. I. KAMENEV ◽  
V. I. TSIFRINOVICH
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Quantum Computer ◽  
One Dimensional ◽  
Ising Spin ◽  
Spin Quantum ◽  
Computer Based ◽  
Frequency Offsets ◽  
Optimal Values ◽  
Large Frequency

The errors caused by the transitions with large frequency offsets (nonresonant transitions) are calculated analytically for a scalable solid-state quantum computer based on a one-dimensional spin chain with Ising interactions between neighboring spins. Selective excitations of the spins are enabled by a uniform gradient of the external magnetic field. We calculate the probabilities of all unwanted nonresonant transitions associated with the flip of each spin with nonresonant frequency and with flips of two spins: one with resonant and one with nonresonant frequencies. It is shown that these errors oscillate with changing gradient of the external magnetic field. Choosing the optimal values of this gradient allows us to decrease these errors by 50%.

scholarly journals The three-dimensional Ising spin glass in an external magnetic field: the role of the silent majority

2014 ◽  
Vol 2014 (5) ◽  
pp. P05014 ◽  
Author(s):  
M Baity-Jesi ◽  
R A Baños ◽  
A Cruz ◽  
L A Fernandez ◽  
J M Gil-Narvion ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Spin Glass ◽  
Three Dimensional ◽  
Ising Spin Glass ◽  
Silent Majority ◽  
Ising Spin

Spin-Lattice Relaxation of Kramers Doublets in Zero External Magnetic Field

1974 ◽  
Vol 33 (16) ◽  
pp. 937-940 ◽  
Author(s):  
Clyde A. Hutchison ◽  
Marvin D. Kemple ◽  
Yung-Tsai Yen
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Lattice Relaxation ◽  
Spin Lattice Relaxation ◽  
Spin Lattice

scholarly journals INFORMATION GEOMETRY, INFERENCE METHODS AND CHAOTIC ENERGY LEVELS STATISTICS

2008 ◽  
Vol 22 (20) ◽  
pp. 1879-1892 ◽  
Author(s):  
CARLO CAFARO
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Energy Level ◽  
Energy Levels ◽  
Information Geometry ◽  
Quantum Energy ◽  
Ising Spin ◽  
Level Statistics ◽  
Inference Methods

In this letter, we propose a novel information-geometric characterization of chaotic (integrable) energy level statistics of a quantum antiferromagnetic Ising spin chain in a tilted (transverse) external magnetic field. Finally, we conjecture our results might find some potential physical applications in quantum energy level statistics.

Spin-lattice-relaxation-like model for superparamagnetic particles under an external magnetic field

2000 ◽  
Vol 62 (5) ◽  
pp. 3372-3380 ◽  
Author(s):  
H.-D. Pfannes ◽  
A. Mijovilovich ◽  
R. Magalhães-Paniago ◽  
R. Paniago
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Lattice Relaxation ◽  
Spin Lattice Relaxation ◽  
Superparamagnetic Particles ◽  
Spin Lattice
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