Quantum magnetism and criticality

By S. Sachdev. 2007

387 citations recorded by the source corpus.

Quantum magnetism describes systems of magnetic spins in which quantum mechanical effects dominate, often in surprising ways. This review article covers phase transitions between these states, including quantum criticality and entangled electron states.

Subfields: Atomic and Molecular Physics, and Optics, Condensed Matter Physics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/e8dfabfbdeb2b4fde654806921d750d630796b6c

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In Atomic and Molecular Physics, and Optics

In Condensed Matter Physics

In Nuclear and High Energy Physics

Citations in the corpus

Landscape of superconducting membranes (2009, background): “The critical point describes the dynamics of highly nonlocal entangled states of matter, in which different competing orders are finely balanced [10].”
A large-scale quantum simulator on a diamond surface at room temperature (2012, background): “A representative example is frustrated quantum magnetism, where the spins cannot order to minimize all local interactions, and the ground state is highly degenerate [1, 2].”
Impure AdS/CFT correspondence (2008, background): “Instead the system is best described by a nite temperature 2+1 dimensional conformal eld theory (CFT) [1, 2 ]. Often this theory turns out to be relativistically invariant (the ‘speed of light’ in these theories is not c but rather some lower speed characterising the material).”
Quantum frustration in organic Mott insulators: from spin liquids to unconventional superconductors (2010, background): “A rather sophisticated analysis is required to show that the gauge field fluctuations are associated with Berry’s phases which lead to VBC order (Sachdev, 2008).”
Creating, moving and merging Dirac points with a Fermi gas in a tunable honeycomb lattice (2011, neutral): “of quantum criticality [28].”
One dimensional bosons: From condensed matter systems to ultracold gases (2011, background): “A quantum phase transition can thus be obtained in two ways: i) one can increase the coupling up to a point at which the ground state changes and becomes an antiferromagnetic one (Sachdev, 2008), ii) one can apply a magnetic field leading to transitions between the singlet and triplet states.”
Lectures on holographic methods for condensed matter physics (2009, methodology): “For further experimental and theoretical references see [ 6 ].”
Colloquium: Spontaneous magnon decays (2012, background): “They became model systems for studying quantum phase transitions (Ruëgg et al., 2008; Sachdev, 2008) and the field-induced Bose-Einstein condensation of magnons (Giamarchi and Tsvelik, 1999; Nikuni et al., 2000).”
Lectures on holographic superfluidity and superconductivity (2009, background): “distance scales of order of a few times the lattice spacing [13].”