-
Article
Evidence for a spinon Kondo effect in cobalt atoms on single-layer 1T-TaSe2
Quantum spin liquids are highly entangled, disordered magnetic states that are expected to arise in frustrated Mott insulators and to exhibit exotic fractional excitations such as spinons and chargons. Despite...
-
Article
Evidence for quantum spin liquid behaviour in single-layer 1T-TaSe2 from scanning tunnelling microscopy
Two-dimensional triangular-lattice antiferromagnets are predicted under some conditions to exhibit a quantum spin liquid ground state with no energy barrier to create emergent, fractionalized spinon excitation...
-
Article
Open AccessDynamic fingerprint of fractionalized excitations in single-crystalline Cu3Zn(OH)6FBr
Beyond the absence of long-range magnetic orders, the most prominent feature of the elusive quantum spin liquid (QSL) state is the existence of fractionalized spin excitations, i.e., spinons. When the system o...
-
Article
Open AccessA continuous metal-insulator transition driven by spin correlations
While Mott insulators induced by Coulomb interactions are a well-recognized class of metal-insulator transitions, insulators purely driven by spin correlations are much less common, as the reduced energy scale...
-
Article
Open AccessAntisymmetric linear magnetoresistance and the planar Hall effect
The phenomena of antisymmetric magnetoresistance and the planar Hall effect are deeply entwined with ferromagnetism. The intrinsic magnetization of the ordered state permits these unusual and rarely observed m...
-
Article
Three-dimensional quantum Hall effect and metal–insulator transition in ZrTe5
The discovery of the quantum Hall effect (QHE)1,2 in two-dimensional electronic systems has given topology a central role in condensed matter physics. Although the possibility of generalizing the QHE to three-dim...
-
Article
Open AccessScaling and data collapse from local moments in frustrated disordered quantum spin systems
Recently measurements on various spin–1/2 quantum magnets such as H3LiIr2O6, LiZn2Mo3O8, ZnCu3(OH)6Cl2 and 1T-TaS2—all described by magnetic frustration and quenched disorder but with no other common relation—nev...
-
Article
Direct optical detection of Weyl fermion chirality in a topological semimetal
Measuring the photocurrent response to circularly polarized mid-infrared light provides direct access to the chirality of Weyl fermions in Weyl semimetals — the property responsible for a range of exotic pheno...
-
Article
Selective scattering between Floquet–Bloch and Volkov states in a topological insulator
Time- and angle-resolved photoelectron spectroscopy experiments are used to monitor the transition between Floquet–Bloch and Volkov states in the topological insulator Bi2Se3.
-
Chapter
t-J Model and the Gauge Theory Description of Underdoped Cuprates
-
Chapter and Conference Paper
Theory of High Temperature Superconductivity: A Status Report
This talk briefly reviews the current experimental and theoretical developments in high Tcsuperconductivity, focusing on the pseudogap regime of the underdoped region of the phase diagram. We argue that the appea...
-
Article
Theory of High Temperature Superconductivity: A Status Report
This talk briefly reviews the current experimental and theoretical developments in high Tc superconductivity, focusing on the pseudogap regime of the underdoped region of the phase diagram.We argue that the appea...
-
Article
Energy Scales in the Local Magnetic Excitation Spectrum of YBa2Cu3O6+y
The wave-vector integrated dynamical spin susceptibility χ 2D(ω) of YBa 2 Cu 3 O 6+y cuprates is considered. χ 2D is calculated in the supercond...
-
Article
Some vortices like it hot
High-temperature superconductors are probably not just normal superconductors with a higher superconducting-transition temperature, Tc. How different they are is confirmed by a study that finds superconducting...
-
Chapter and Conference Paper
The Spin Gap and Superconducting States of Underdoped Cuprates
We review our SU(2) formulation of the t-J model as a description of the underdoped cuprates. The model incorporates spin-charge separation and successfully explains many unusual normal state properties, includin...
-
Article
Cuprate superconductors from the viewpoint of strong correlation
There is now a growing consensus that the physics of cuprate superconductors is dominated by strong correlation and that the fundamental challenge to the theorist is to achieve an understanding of the doped Mo...
-
Chapter
Universal Conductance Fluctuations in Disordered Metals
Recently it has been found both experimentally1–3 and theoretically4–8 that the electrical conductance in disordered metals exhibits fluctuations as the magnetic field B or the chemical potential µ is varied. The...
-
Article
Atomic motion: Quantum fluctuations in sub-micron wires
