61 citations · 120 across the 8 of their papers we have counts for
11 papers
Quantum Criticality in Ferromagnetic Single-Electron Transistors
Stefan Kirchner, Lijun Zhu, Qimiao Si +1
Considerable evidence exists for the failure of the traditional theory of quantum critical points (QCPs), pointing to the need to incorporate novel excitations. The destruction of…
Magnetic Quantum Phase Transitions in Kondo Lattices
Qimiao Si, Jian-Xin Zhu, D. R. Grempel
The identification of magnetic quantum critical points in heavy fermion metals has provided an ideal setting for experimentally studying quantum criticality. Motivated by these exp…
Reply to a Comment of M. Continentino on "Universally diverging Gruneisen parameter and the magnetocaloric effect close to quantum critical points"
Lijun Zhu, Markus Garst, Achim Rosch +1
We show that the comment [cond-mat/0408217] by Continentino on our recent paper [PRL 91, 066404 (2003), cond-mat/0212335] reaches incorrect conclusions as the comment wrongly extra…
Quantum critical properties of the Bose-Fermi Kondo Model in a large-N limit
Lijun Zhu, Stefan Kirchner, Qimiao Si +1
Studies of non-Fermi liquid properties in heavy fermions have led to the current interest in the Bose-Fermi Kondo model. Here we use a dynamical large-N approach to analyze an SU(N…
Orthogonality Catastrophe in Bose-Einstein Condensates
Jun Sun, Olen Rambow, Qimiao Si
Orthogonality catastrophe in fermionic systems is well known: in the thermodynamic limit, the overlap between the ground state wavefunctions with and without a single local scatter…
Quantum Critical Metals: beyond the Order Parameter Fluctuations
Qimiao Si
The standard description of quantum critical points takes into account only fluctuations of the order parameter, and treats quantum fluctuations as extra dimensions of classical fl…