Publications (20)
Quadratic Fermi Node in a 3D Strongly Correlated Semimetal
Takeshi Kondo, M. Nakayama, R. Chen +18
Strong spin-orbit coupling fosters exotic electronic states such as topological insulators and superconductors, but the combination of strong spin-orbit and strong electron-electro…
Fractionalization in an Easy-axis Kagome Antiferromagnet
L. Balents, M. P. A. Fisher, S. M. Girvin
We study an antiferromagnetic spin-1/2 model with up to third nearest-neighbor couplings on the Kagome lattice in the easy-axis limit, and show that its low-energy dynamics are gov…
Supersolid Order from Disorder: Hard-Core Bosons on the Triangular Lattice
R. G. Melko, A. Paramekanti, A. A. Burkov +3
We study the interplay of Mott localization, geometric frustration, and superfluidity for hard-core bosons with nearest-neighbor repulsion on the triangular lattice. For this model…
Transition to zero resistance in a two dimensional electron gas driven with microwaves
J. Alicea, L. Balents, M. P. A. Fisher +2
High-mobility 2D electron systems in a perpendicular magnetic field exhibit zero resistance states (ZRS) when driven with microwave radiation. We study the nonequilibrium phase tra…
Giant modulation of optical nonlinearity by Floquet engineering
Jun-Yi Shan, M. Ye, Sungmin Lee +3
Strong periodic driving with light offers the potential to coherently manipulate the properties of quantum materials on ultrafast timescales. Recently, strategies have emerged to d…
Slater to Mott crossover in the metal to insulator transition of Nd2Ir2O7
M. Nakayama, Takeshi Kondo, Z. Tian +16
We present an angle-resolved photoemission study of the electronic structure of the three-dimensional pyrochlore iridate Nd2Ir2O7 through its magnetic metal-insulator transition. O…
Energetic, spatial and momentum character of a buried interface: the two-dimensional electron gas between two metal oxides
S. Nemšák, G. Conti, A. X. Gray +32
The interfaces between two condensed phases often exhibit emergent physical properties that can lead to new physics and novel device applications, and are the subject of intense st…
Spin-orbiton and quantum criticality in FeSc2S4
L. Mittelstädt, M. Schmidt, Zhe Wang +7
In FeSc2S4 spin-orbital exchange competes with strong spin-orbit coupling, suppressing long-range spin and orbital order and, hence, this material represents one of the rare exampl…
Quantum Criticality and Deconfinement in Phase Transitions Between Valence Bond Solids
Ashvin Vishwanath, L. Balents, T. Senthil
We consider spin-half quantum antiferromagnets in two spatial dimensions in the quantum limit, where the spins are in a valence bond solid (VBS) phase. The transitions between two…
Observation by resonant angle-resolved photoemission of a critical thickness for 2-dimensional electron gas formation in SrTiO embedded in GdTiO
S. Nemšák, G. Conti, G. K. Pálsson +15
For certain conditions of layer thickness, the interface between GdTiO (GTO) and SrTiO (STO) in multilayer samples has been found to form a two-dimensional electron gas (2D…
Luttinger Liquid Behavior in Carbon Nanotubes
M. Bockrath, D. H. Cobden, J. Lu +4
An interacting one-dimensional (1D) electron system is predicted to behave very differently than its higher-dimensional counterparts. Coulomb interactions strongly modify the prope…
Momentum-resolved tunneling between Luttinger liquids
D. Carpentier, C. Peca, L. Balents
We study tunneling between two nearby cleaved edge quantum wires in a perpendicular magnetic field. Due to Coulomb forces between electrons, the wires form a strongly-interacting p…
Dimensional crossover in a layered ferromagnet detected by spin correlation driven distortions
A. Ron, E. Zoghlin, L. Balents +2
Magneto-elastic distortions are commonly detected across magnetic long-range ordering (LRO) transitions. In principle, they are also induced by the magnetic short-range ordering (S…
Topological invariants of time-reversal-invariant band structures
J. E. Moore, L. Balents
The topological invariants of a time-reversal-invariant band structure in two dimensions are multiple copies of the invariant found by Kane and Mele. Such invariants…
Ground state phases of the Half-Filled One-Dimensional Extended Hubbard Model
A. W. Sandvik, L. Balents, D. K. Campbell
Using quantum Monte Carlo simulations, results of a strong-coupling expansion, and Luttinger liquid theory, we determine quantitatively the ground state phase diagram of the one-di…
Supersolid Order of Frustrated Hard-Core Bosons in a Triangular Lattice System
H. C. Jiang, M. Q. Weng, Z. Y. Weng +2
We numerically demonstrate that a supersolid phase exists in a frustrated hard-core boson system on a triangular lattice over a wide range of interaction strength. In the infinite…
Weak Ferromagnetism and Excitonic Condensates
M. Y. Veillette, L. Balents
We investigate a model of excitonic ordering (i.e electron-hole pair condensation) appropriate for the divalent hexaborides. We show that the inclusion of imperfectly nested electr…
Spin liquid and quantum phase transition without symmetry breaking in a frustrated three-dimensional Ising model
J. Roechner, L. Balents, K. P. Schmidt
We show that the highly frustrated transverse-field Ising model on the three-dimensional pyrochlore lattice realizes a first-order phase transition without symmetry breaking betwee…
Intrinsic quantized anomalous Hall effect in a moiré heterostructure
M. Serlin, C. L. Tschirhart, H. Polshyn +6
We report the observation of a quantum anomalous Hall effect in twisted bilayer graphene showing Hall resistance quantized to within .1\% of the von Klitzing constant at ze…
Quasiparticles in the 111 state and its compressible ancestors
M. Y. Veillette, L. Balents, Matthew P. A. Fisher
We investigate the relationship of the spontaneously inter-layer coherent ``111''state of quantum Hall bilayers at total filling factor ν=1 to ``mutual'' composite fermions, in wh…