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cond-mat.str-el2010★ 12 cited
Nonmagnetic impurity perturbation to the quasi-two-dimensional quantum helimagnet LiCu2O2
H. C. Hsu, J. -Y. Lin, W. L. Lee +6
A complete phase diagram of Zn substituted quantum quasi-two-dimensional helimagnet LiCu2O2 has been presented. Helical ordering transition temperature (T_h) of the original LiCu2O…
cond-mat.str-el2010
Quantum critical surface of the zigzag spin chain under magnetic field: Application to superconducting quantum dots
Meihua Chen, Sujit Sarkar, C. D. Hu
We analyze the exact ground state of XXZ zigzag spin chain with applied magnetic field and find the quantum critical surface. Using the theorem of positive semi-definite matrix, we…