Doping Induced Magnetization Plateaus

作者: Holger Frahm , Constantin Sobiella

DOI: 10.1103/PHYSREVLETT.83.5579

关键词:

摘要: The low temperature magnetization process of antiferromagnetic spin-S chains doped with mobile spin-(S-1/2) carriers is studied in an exactly solvable model. For sufficiently high magnetic fields the system a metallic phase finite gap for excitations. In this which exists large range carrier concentrations x zero determined by alone. This leads to plateaus curve at tunable fraction saturation magnetization. critical behaviour edges these detail.

参考文章(32)
Masaki Oshikawa, Masanori Yamanaka, Ian Affleck, Magnetization Plateaus in Spin Chains: “Haldane Gap” for Half-Integer Spins Physical Review Letters. ,vol. 78, pp. 1984- 1987 ,(1997) , 10.1103/PHYSREVLETT.78.1984
Takashi Tonegawa, Takeshi Nakao, Makoto Kaburagi, Ground-State Phase Diagram and Magnetization Curves of the Spin-1 Antiferromagnetic Heisenberg Chain with Bond Alternation and Uniaxial Single-Ion-Type Anisotropy Journal of the Physical Society of Japan. ,vol. 65, pp. 3317- 3330 ,(1996) , 10.1143/JPSJ.65.3317
D. C. Cabra, A. Honecker, P. Pujol, MAGNETIZATION CURVES OF ANTIFERROMAGNETIC HEISENBERG SPIN-1/2 LADDERS Physical Review Letters. ,vol. 79, pp. 5126- 5129 ,(1997) , 10.1103/PHYSREVLETT.79.5126
D. C. Cabra, A. Honecker, P. Pujol, Magnetization plateaux in N -leg spin ladders Physical Review B. ,vol. 58, pp. 6241- 6257 ,(1998) , 10.1103/PHYSREVB.58.6241
A. Fledderjohann, C. Gerhardt, M. Karbach, K.-H. Mütter, R. Wießner, SOFT MODES, GAPS, AND MAGNETIZATION PLATEAUS IN ONE-DIMENSIONAL SPIN-1/2 ANTIFERROMAGNETIC HEISENBERG MODELS Physical Review B. ,vol. 59, pp. 991- 999 ,(1999) , 10.1103/PHYSREVB.59.991