scholarly journals Magnetic Field-Induced Phase Transition in Quantum Spin System Cu2Cl4·H8C4SO2

2005 ◽  
Vol 159 ◽  
pp. 212-216 ◽  
Author(s):  
Masashi Fujisawa ◽  
Hidekazu Tanaka ◽  
Toshiro Sakakibara
Keyword(s):  
Magnetic Field ◽  
Phase Transition ◽  
Spin System ◽  
Quantum Spin ◽  
Quantum Spin System

Magnetic Field-Induced Phase Transition of Quantum Spin System Cu2Cl4⋅H8C4SO2

2006 ◽  
Author(s):  
Masashi Fujisawa ◽  
Hidekazu Tanaka ◽  
Toshiro Sakakibara
Keyword(s):  
Magnetic Field ◽  
Phase Transition ◽  
Spin System ◽  
Quantum Spin ◽  
Quantum Spin System

PULSE-FIELD EXPERIMENTS ON THE SPIN-LATTICE INTERACTION IN LOW-DIMENSIONAL SPIN SYSTEMS

2002 ◽  
Vol 16 (20n22) ◽  
pp. 3369-3372
Author(s):  
B. WOLF ◽  
S. ZHERLITSYN ◽  
S. SCHMIDT ◽  
B. LÜTHI ◽  
M. LANG
Keyword(s):  
Magnetic Field ◽  
Spin System ◽  
Field Experiments ◽  
Resonant Interaction ◽  
Quantum Spin ◽  
Spin Systems ◽  
Pulse Field ◽  
Quantum Spin System ◽  
Magnetic Excitations ◽  
Low Dimensional

Low-dimensional spin systems reveal new and unexpected physical phenomena such as distinct plateaus in the magnetization as a function of magnetic field. In this paper we present ultrasonic measurements for the quasi-two-dimensional spin system SrCu2(BO3)2 in magnetic fields up to 50 T. From this technique we obtained detailed information about the spin state, the magnetic excitations and their interaction with phonons. The dimerized quantum-spin system SrCu2(BO3)2 exhibits plateaus in the magnetization and shows surprisingly strong magneto-elastic effects as a function of temperature and magnetic field. The pronounced elastic anomalies indicate a resonant interaction between the sound wave and the magnetic excitations.

Dissipative quantum evolution of a spin system in a magnetic field

2000 ◽  
Vol 77 (10) ◽  
pp. 785-794
Author(s):  
C Wolf
Keyword(s):  
Magnetic Field ◽  
Spin Polarization ◽  
Spin System ◽  
Quantum Spin ◽  
Decay Rates ◽  
Quantum Evolution ◽  
Quantum Spin System

By allowing for dissipative interaction between a quantum spin system and the environment we calculate the frequencies and decay rates of the components of the x spin polarization for a spin system precessing in a magnetic field when the spin system has dimensionality corresponding to S= ½,1,3/2 .PACS. No.: 03.65

scholarly journals QUANTUM PHASE INTERFERENCE IN MAGNETIC MOLECULAR CLUSTERS

2000 ◽  
Vol 14 (22n23) ◽  
pp. 809-818
Author(s):  
YAN-HONG JIN ◽  
YI-HANG NIE ◽  
ZHI-JIAN LI ◽  
J.-Q. LIANG ◽  
F.-C. PU
Keyword(s):  
Magnetic Field ◽  
Spin System ◽  
Effective Potential ◽  
Potential Field ◽  
Molecular Clusters ◽  
Quantum Spin ◽  
Quantum Spin System ◽  
Hamilton Operator ◽  
Numerical Result ◽  
Phase Interference

The oscillation of tunnel splitting in Fe8 molecular clusters is obtained as a function of magnetic field applied along the hard axis by means of the instanton method with both effective potential field description of quantum spin system and the semiclassical treatment. The theoretical splittings of the instanton method are compared with the numerical result by diagonalization of the spin Hamilton operator and experimental observations.

scholarly journals Magnetic-field induced quantum phase transition and critical behavior in a gapped spin system

2007 ◽  
Vol 310 (2) ◽  
pp. 1352-1354 ◽  
Author(s):  
F. Yamada ◽  
T. Ono ◽  
M. Fujisawa ◽  
H. Tanaka ◽  
T. Sakakibara
Keyword(s):  
Magnetic Field ◽  
Phase Transition ◽  
Quantum Phase Transition ◽  
Spin System ◽  
Critical Behavior ◽  
Quantum Phase
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