Phase diagrams and correlation exponents for quantum spin chains of arbitrary spin quantum number

1986 ◽  
Vol 34 (9) ◽  
pp. 6372-6385 ◽  
Author(s):  
H. J. Schulz
Keyword(s):  
Phase Diagrams ◽  
Quantum Number ◽  
Arbitrary Spin ◽  
Quantum Spin ◽  
Spin Chains ◽  
Quantum Spin Chains ◽  
Spin Quantum ◽  
Spin Quantum Number

scholarly journals Continuous control of classical-quantum crossover by external high pressure in the coupled chain compound CsCuCl3

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Daisuke Yamamoto ◽  
Takahiro Sakurai ◽  
Ryosuke Okuto ◽  
Susumu Okubo ◽  
Hitoshi Ohta ◽  
...  
Keyword(s):  
High Pressure ◽  
Quantum Number ◽  
Quantum Correlations ◽  
External Pressure ◽  
Spin Chains ◽  
Continuous Control ◽  
Two Dimensional ◽  
Spin Quantum ◽  
Spin Quantum Number ◽  
Classical Quantum

AbstractIn solid materials, the parameters relevant to quantum effects, such as the spin quantum number, are basically determined and fixed at the chemical synthesis, which makes it challenging to control the amount of quantum correlations. We propose and demonstrate a method for active control of the classical-quantum crossover in magnetic insulators by applying external pressure. As a concrete example, we perform high-field, high-pressure measurements on CsCuCl3, which has the structure of weakly-coupled spin chains. The magnetization process experiences a continuous evolution from the semi-classical realm to the highly-quantum regime with increasing pressure. Based on the idea of "squashing” the spin chains onto a plane, we characterize the change in the quantum correlations by the change in the value of the local spin quantum number of an effective two-dimensional model. This opens a way to access the tunable classical-quantum crossover of two-dimensional spin systems by using alternative systems of coupled-chain compounds.

Solvable nineteen-vertex models and quantum spin chains of spin one

1994 ◽  
Vol 4 (8) ◽  
pp. 1151-1159 ◽  
Author(s):  
Makoto Idzumi ◽  
Tetsuji Tokihiro ◽  
Masao Arai
Keyword(s):  
Quantum Spin ◽  
Spin Chains ◽  
Quantum Spin Chains ◽  
Vertex Models
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