55 citations · 146 across the 37 of their papers we have counts for
16 papers · 1 filter
Moiré Periodic and Quasiperiodic Crystals in Heterostructures of Twisted Bilayer Graphene and Hexagonal Boron Nitride
Xinyuan Lai, Guohong Li, Angela M. Coe +4
Stacking two atomic crystals with a twist between their crystal axes produces moiré potentials that modify the electronic properties. Here we show that double moiré potentials gene…
Edge modes and boundary impurities in the anisotropic Heisenberg spin chain
Pradip Kattel, Parameshwar R. Pasnoori, J. H. Pixley +1
We present a comprehensive analysis of boundary phenomena in a spin- anisotropic Heisenberg chain (XXZ-) in the gapped antiferromagnetic phase, with a par…
Charge transfer spin-polarons and ferromagnetism in weakly doped AB-stacked TMD heterobilayers
Daniele Guerci, J. H. Pixley, Andrew J. Millis
We study the formation of ferromagnetic and magnetic polaron states in weakly doped heterobilayer transition metal dichalcogenides in the ``heavy fermion'' limit in which one layer…
Electronic anisotropy and rotational symmetry breaking at a Weyl semimetal/spin ice interface
Tsung-Chi Wu, Yueqing Chang, Ang-Kun Wu +10
In magnetic pyrochlore materials, the interplay of spin-orbit coupling, electronic correlations, and geometrical frustration gives rise to exotic quantum phases, including topologi…
Concomitant Entanglement and Control Criticality Driven by Collective Measurements
Thomas Iadecola, Justin H. Wilson, J. H. Pixley
Adaptive quantum circuits-where a quantum many-body state is controlled using measurements and conditional unitary operations-are a powerful paradigm for state preparation and quan…
Topological superconductivity from repulsive interactions in twisted WSe
Daniele Guerci, Daniel Kaplan, Julian Ingham +2
The recent observation of superconductivity in twisted bilayer WSe raises intriguing questions concerning the origin and the properties of superconducting states realized in ba…
Sine-Gordon model at finite temperature: the method of random surfaces
M. Tóth, J. H. Pixley, D. Szász-Schagrin +2
We study the sine-Gordon quantum field theory at finite temperature by generalizing the method of random surfaces to compute the free energy and one-point functions of exponential…
Quantum Zeno Effect in Noisy Integrable Quantum Circuits for Impurity Models
Yicheng Tang, Pradip Kattel, J. H. Pixley +1
We theoretically study the open quantum system dynamics (in the Trotterized limit) of integrable quantum circuits in the presence of onsite dephasing noise with a spin-$\frac{1}{2}…
Topological Kondo semimetal and insulator in AB-stacked heterobilayer transition metal dichalcogenides
Daniele Guerci, Kevin P. Lucht, Valentin Crépel +3
Recent experiments reported the realization of a heavy Fermi liquid in AB-stacked MoTe/WSe heterobilayers. In this paper we show that the AB-stacked heterobilayer configura…
Edge Spin fractionalization in one-dimensional spin- quantum antiferromagnets
Pradip Kattel, Yicheng Tang, J. H. Pixley +1
We show that a gapped spin- chain with antiferromagnetic (AFM) order exhibits in the thermodynamic limit exponentially localized fractional edge modes when the…
A spin chain with non-Hermitian symmetric boundary couplings: exact solution, dissipative Kondo effect, and phase transitions on the edge
Pradip Kattel, Parameshwar R. Pasnoori, J. H. Pixley +1
We construct an exactly solvable symmetric non-Hermitian model where a spin isotropic quantum Heisenberg spin chain is coupled to two spin$-\frac{1}{2}…
Quasiparticle and superfluid dynamics in Magic-Angle Graphene
Elías Portolés, Marta Perego, Pavel A. Volkov +12
Magic-Angle Twisted Bilayer Graphene shows a wide range of correlated phases which are electrostatically tunable. Despite a growing knowledge of the material, there is yet no conse…
Critical Properties of Weak Measurement Induced Phase Transitions in Random Quantum Circuits
Kemal Aziz, Ahana Chakraborty, J. H. Pixley
The effects of different forms of weak measurements on the nature of the measurement induced phase transition are theoretically studied in hybrid random quantum circuits of qubits.…
Decoupling the electronic gap from the spin Chern number in disordered higher-order topological insulators
Alexander C. Tyner, Cormac Grindall, J. H. Pixley
In two-dimensional topological insulators, a disorder induced topological phase transition is typically identified with an Anderson localization transition at the Fermi energy. How…
Inducing Topology in Twisted Nodal Superconductors
Kevin P. Lucht, Pavel A. Volkov, J. H. Pixley
Twisted nodal superconductors have been shown to exhibit chiral topological superconductivity under broken time-reversal symmetry. Here we show how a time-reversal preserving topol…
The Kondo effect in the quantum spin chain
Pradip Kattel, Yicheng Tang, J. H. Pixley +1
We investigate the boundary phenomena that arise in a finite-size spin chain interacting through an interaction with a spin impurity located at its edge. Up…