Phase diagrams of a mixed spin transverse Ising model with random interactions

✍ Scribed by T. Kaneyoshi

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 573 KB
• Volume: 175
• Category: Article
• ISSN: 0378-4371
• DOI: 10.1016/0378-4371(91)90237-7

✦ Synopsis

The phase diagrams of a random-bond mixed spin Ising system consisting of spin-~ and spin-I wtth a transverse field are investigated within the framework of an effective-field approximation. Our phase diagram of zero transverse field is completely equivalent to that based on the finite cluster approximation. We find that the effects of a transverse field on the phase diagram exhibit a number of interesting phenomena. In particular, the bond-diluted mixed spin Ising model with a transverse field may be a desirable system to verify the discontinuity of the critical transverse field at the percolation concentration.