Hunting Majorana fermions in Kitaev magnets

Y Motome, J Nasu - Journal of the Physical Society of Japan, 2020 - journals.jps.jp
A Majorana fermion is a fermionic particle that is its own antiparticle. Since the theoretical
discovery by Ettore Majorana in 1937, the exotic particle has long been searched in particle …

Frustration and quantum criticality

M Vojta - Reports on Progress in Physics, 2018 - iopscience.iop.org
This review article is devoted to the interplay between frustrated magnetism and quantum
critical phenomena, covering both theoretical concepts and ideas as well as recent …

Electronic Properties of in Proximity to Graphene

S Biswas, Y Li, SM Winter, J Knolle, R Valentí - Physical Review Letters, 2019 - APS
In the pursuit of develo** routes to enhance magnetic Kitaev interactions in α-RuCl 3, as
well as probing do** effects, we investigate the electronic properties of α-RuCl 3 in …

Direct Visualization of the Charge Transfer in a Graphene/α-RuCl3 Heterostructure via Angle-Resolved Photoemission Spectroscopy

A Rossi, C Johnson, J Balgley, JC Thomas… - Nano Letters, 2023 - ACS Publications
We investigate the electronic properties of a graphene and α-ruthenium trichloride (α-RuCl3)
heterostructure using a combination of experimental techniques. α-RuCl3 is a Mott insulator …

Tunneling spectroscopy of quantum spin liquids

EJ König, MT Randeria, B Jäck - Physical Review Letters, 2020 - APS
We examine the spectroscopic signatures of tunneling through a Kitaev quantum spin liquid
(QSL) barrier in a number of experimentally relevant geometries. We combine contributions …

The range of non-Kitaev terms and fractional particles in α-RuCl3

Y Wang, GB Osterhoudt, Y Tian… - npj Quantum …, 2020 - nature.com
Significant efforts have focused on the magnetic excitations of relativistic Mott insulators,
predicted to realize the Kitaev quantum spin liquid (QSL). This exactly solvable model …

Solvable 3d kondo lattice exhibiting pair density wave, odd-frequency pairing, and order fractionalization

P Coleman, A Panigrahi, A Tsvelik - Physical review letters, 2022 - APS
The Kondo lattice model plays a key role in our understanding of quantum materials, but a
lack of small parameters has posed a long-standing problem. We present a three …

Anomalous quantum oscillations in a heterostructure of graphene on a proximate quantum spin liquid

V Leeb, K Polyudov, S Mashhadi, S Biswas, R Valentí… - Physical Review Letters, 2021 - APS
The quasi-two-dimensional Mott insulator α-RuCl 3 is proximate to the sought-after Kitaev
quantum spin liquid (QSL). In a layer of α-RuCl 3 on graphene, the dominant Kitaev …

Order fractionalization in a Kitaev-Kondo model

AM Tsvelik, P Coleman - Physical Review B, 2022 - APS
We describe a mechanism for order fractionalization in a two-dimensional Kondo lattice
model, in which electrons interact with a gapless spin liquid of Majorana fermions described …

Topological and magnetic phase transitions in the bilayer Kitaev-Ising model

A Vijayvargia, UFP Seifert, O Erten - Physical Review B, 2024 - APS
We investigate the phase diagram of a bilayer Kitaev honeycomb model with Ising interlayer
interactions, deriving effective models via perturbation theory and performing Majorana …