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9 papers · 2 filters
Soluble limit and criticality of fermions in Z2 gauge theories
Elio J. König, Piers Coleman, Alexei M. Tsvelik
Quantum information theory and strongly correlated electron systems share a common theme of macroscopic quantum entanglement. In both topological error correction codes and theorie…
Large-N Approach to the Two-Channel Kondo Lattice
Ari Wugalter, Yashar Komijani, Piers Coleman
This paper studies the two-channel Kondo lattice in the large-N limit at half-filling. In this model, the continuous channel-symmetry is spontaneously broken, forming a channel fer…
Realizing Quantum Materials with Helium: Helium films at ultralow temperatures, from strongly correlated atomically layered films to topological superfluidity
J. Saunders
This article provides an overview, primarily from an experimental perspective, of recent progress and future prospects in using helium to realize a range of quantum materials of ge…
The Triplet Resonating Valence Bond State and Superconductivity in Hund's Metals
Piers Coleman, Yashar Komijani, Elio J. König
A central idea in strongly correlated systems is that doping a Mott insulator leads to a superconductor by transforming the resonating valence bonds (RVBs) into spin-singlet Cooper…
Colossal magnetoresistance in the insulating ferromagnetic double perovskites TlNiMnO: A neutron diffraction study
Lei Ding, Dmitry D. Khalyavin, Pascal Manuel +4
In the family of double perovskites, colossal magnetoresistance (CMR) has been so far observed only in half-metallic ferrimagnets such as the known case SrFeMoO where it ha…
Strange metal behavior in a pure ferromagnetic Kondo lattice
Bin Shen, Yongjun Zhang, Yashar Komijani +12
The strange metal phases found to develop in a wide range of materials near a quantum critical point (QCP), have posed a long-standing mystery. The frequent association of strange…
Specific heat maximum as a signature of Mott physics in the two-dimensional Hubbard model
G. Sordi, C. Walsh, P. Sémon +1
Recent experiments on cuprates show that as a function of doping, the normal-state specific heat sharply peaks at the doping , where the pseudogap ends at low temperature. Thi…
Role of defects in determining the magnetic ground state of ytterbium titanate
D. F. Bowman, E. Cemal, T. Lehner +11
Pyrochlore systems are ideally suited to the exploration of geometrical frustration in three dimensions, and their rich phenomenology encompasses topological order and fractional e…
Magnetic Skyrmion Lattice by Fourier Transform Method
Eugene Balkind, Aldo Isidori, Matthias Eschrig
We demonstrate a fast numerical method of theoretical studies of skyrmion lattice or spiral order in magnetic materials with Dzyaloshinsky-Moriya interaction. The method is based o…