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Fermi Surface Reconstruction by Dynamic Magnetic Fluctuations and Spin-Charge Separation Near an O(3) Quantum Critical Point
Michael Holt, Jaan Oitmaa, Wei Chen +1
Stimulated by the small/large Fermi surface controversy in the cuprates we consider a small number of holes injected into the bilayer antiferromagnet. The system has an O(3) quantu…
Fermi Surface Reconstruction by Dynamic Magnetic Fluctuations
Michael Holt, Jaan Oitmaa, Wei Chen +1
We demonstrate that nearly critical quantum magnetic fluctuations in strongly correlated electron systems can change the Fermi surface topology and also lead to spin charge separat…
Pnictides as frustrated quantum antiferromagnet close to a quantum phase transition
Goetz S. Uhrig, Michael Holt, Jaan Oitmaa +2
We present a detailed description of the dynamics of the magnetic modes in the recently discovered superconducting pnictides using reliable self-consistent spin-wave theory and ser…
Curie and Neel Temperatures of Quantum Magnets
J. Oitmaa, Weihong Zheng
We estimate, using high-temperature series expansions, the transition temperatures of the spin 1/2, 1 and 3/2 Heisenberg ferromagnet and antiferromagnet in 3-dimensions. The manner…