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cond-mat.dis-nn2005
Dynamics of weakly coupled random antiferromagnetic quantum spin chains
Eddy Yusuf, Kun Yang
We study the low-energy collective excitations and dynamical response functions of weakly coupled random antiferromagnetic spin-1/2 chains. The interchain coupling leads to Neel or…
cond-mat.dis-nn2003
Random Antiferromagnetic Spin-1/2 Chains with Competing Interactions
Eddy Yusuf, Kun Yang
We study disordered antiferromagnetic spin-1/2 chains with nearest- and further-neighbor interactions using the real-space renormalization-group method. We find that the system sup…