Spin liquids in frustrated magnets
- L. Balents
- PhysicsNature
- 10 March 2010
This exotic behaviour of frustrated magnets is now being uncovered in the laboratory, providing insight into the properties of spin liquids and challenges to the theoretical description of these materials.
Deconfined Quantum Critical Points
- T. Senthil, A. Vishwanath, L. Balents, S. Sachdev, M. Fisher
- PhysicsScience
- 13 November 2003
It is shown that near second-order quantum phase transitions, subtle quantum interference effects can invalidate this paradigm for quantum criticality, and a theory of quantum critical points in a variety of experimentally relevant two-dimensional antiferromagnets is presented.
Topological invariants of time-reversal-invariant band structures
- J. E. Moore, L. Balents
- Physics, Mathematics
- 12 July 2006
The topological invariants of a time-reversal-invariant band structure in two dimensions are multiple copies of the $\mathbb{Z}_2$ invariant found by Kane and Mele. Such invariants protect the…
Quantum criticality beyond the Landau-Ginzburg-Wilson paradigm
- T. Senthil, L. Balents, S. Sachdev, A. Vishwanath, M. Fisher
- Physics
- 23 December 2003
We present the critical theory of a number of zero-temperature phase transitions of quantum antiferromagnets and interacting boson systems in two dimensions. The most important example is the…
Weyl semimetal in a topological insulator multilayer.
- A. Burkov, L. Balents
- PhysicsPhysical Review Letters
- 25 May 2011
The Weyl semimetal has a nonzero dc conductivity at zero temperature, but Drude weight vanishing as T(2), and is thus an unusual metallic phase, characterized by a finite anomalous Hall conductivity and topologically protected edge states.
Topological nodal semimetals
- A. Burkov, M. Hook, L. Balents
- Physics
- 5 October 2011
We present a study of “nodal-semimetal” phases in which nondegenerate conduction and valence bands touch at points (the “Weyl semimetal”) or lines (the “line-node semimetal”) in three-dimensional…
Quantum Excitations in Quantum Spin Ice
- K. Ross, L. Savary, B. Gaulin, L. Balents
- Physics
- 5 July 2011
Recent work has highlighted remarkable effects of classical thermal fluctuations in the dipolar spin ice compounds, such as ‘‘artificial magnetostatics,’’ manifesting as Coulombic power-law spin…
Intrinsic quantized anomalous Hall effect in a moiré heterostructure
- M. Serlin, C. Tschirhart, A. Young
- PhysicsScience
- 29 June 2019
The observation of a QAH effect in twisted bilayer graphene aligned to hexagonal boron nitride is reported, driven by intrinsic strong interactions, which polarize the electrons into a single spin- and valley-resolved moiré miniband with Chern number C = 1.
Quantum spin liquids: a review
- L. Savary, L. Balents
- Physics, ChemistryReports on progress in physics. Physical Society
- 14 January 2016
This review discusses the nature of such phases and their properties based on paradigmatic models and general arguments, and introduces theoretical technology such as gauge theory and partons, which are conveniently used in the study of quantum spin liquids.
Correlated Quantum Phenomena in the Strong Spin-Orbit Regime
- W. Witczak-Krempa, Gang Chen, Yong Baek Kim, L. Balents
- Physics
- 9 May 2013
We discuss phenomena arising from the combined influence of electron correlation and spin-orbit coupling (SOC), with an emphasis on emergent quantum phases and transitions in heavy transition metal…
...
...