267 citations · 1k across the 21 of their papers we have counts for
20 papers
Magnon-spinon dichotomy in the Kitaev hyperhoneycomb -LiIrO
Alejandro Ruiz, Nicholas P. Breznay, Mengqun Li +16
The family of edge-sharing tri-coordinated iridates and ruthenates has emerged in recent years as a major platform for Kitaev spin liquid physics, where spins fractionalize into em…
Competition between magnetic order and charge localization in NaIrO thin crystal devices
Josue Rodriguez, Gilbert Lopez, Samantha Crouch +15
Spin orbit assisted Mott insulators such as sodium iridate (NaIrO) have been an important subject of study in the recent years. In these materials, the interplay of electro…
Hidden spin-orbital order in the Kitaev hyperhoneycomb -LiIrO
Alejandro Ruiz, Vikram Nagarajan, Mayia Vranas +8
We report the existence of a phase transition at high temperature in the 3D Kitaev candidate material, -LiIrO. We show that the transition is bulk, intrinsic and orders…
Evolution of charge order topology across a magnetic phase transition in cuprate superconductors
Mingu Kang, Jonathan Pelliciari, Alex Frano +17
Charge order is now accepted as an integral constituent of cuprate high-temperature superconductors, one that is intimately related to other instabilities in the phase diagram incl…
Particle-hole symmetry reveals failed superconductivity in the metallic phase of two-dimensional superconducting films
Nicholas P. Breznay, Aharon Kapitulnik
Electrons confined to two dimensions display an unexpected diversity of behaviors as they are cooled to absolute zero. Noninteracting electrons are predicted to eventually "localiz…
Quasiparticles and charge transfer at the two surfaces of the honeycomb iridate NaIrO
L. Moreschini, I. Lo Vecchio, N. P. Breznay +10
Direct experimental investigations of the low-energy electronic structure of the NaIrO iridate insulator are sparse and draw two conflicting pictures. One relies on flat ba…
Superconductor to weak-insulator transitions in disordered Tantalum Nitride films
Nicholas P. Breznay, Mihir Tendulkar, Li Zhang +2
We study the two-dimensional superconductor-insulator transition (SIT) in thin films of tantalum nitride. At zero magnetic field, films can be disorder-tuned across the SIT by adju…
Field-induced intertwined orders in 3D Mott-Kitaev honeycomb -Li2IrO3
Alejandro Ruiz, Alex Frano, Nicholas P. Breznay +7
Honeycomb iridates are thought to have strongly spin-anisotropic exchange interactions that could lead to an extraordinary state of matter known as the Kitaev quantum spin liquid.…
Resonant x-ray scattering reveals possible disappearance of magnetic order under hydrostatic pressure in the Kitaev candidate -LiIrO
Nicholas P. Breznay, Alejandro Ruiz, Alex Frano +4
Honeycomb iridates such as -LiIrO are argued to realize Kitaev spin-anisotropic magnetic exchange, along with Heisenberg and possibly other couplings. While systems with…
Thermodynamic Anomaly Above the Superconducting Critical Temperature in the Quasi One-Dimensional Superconductor TaPdTe
T. Helm, F. Flicker, R. Kealhofer +9
We study the intrinsic transport anisotropy and fermiology of the quasi one-dimensional superconductor TaPdTe. Below K we detect a thermodynamic phase trans…
Quantum oscillations suggest hidden quantum phase transition in the cuprate superconductor PrCuO
Nicholas P. Breznay, Ross D. McDonald, Yoshiharu Krockenberger +8
For both electron- and hole-doped cuprates, superconductivity appears in the vicinity of suppressed broken symmetry order, suggesting that quantum criticality plays a vital role in…
Self Duality and a possible Hall-insulator phase near the superconductor-to-insulator transition in two-dimensional indium-oxide films
Nicholas P. Breznay, Myles A. Steiner, Steven A. Kivelson +1
We combine measurements of the longitudinal () and Hall () resistivities of disordered two dimensional amorphous indium-oxide films to study the magnetic-field tune…
Photoexcited states of the harmonic honeycomb iridate γ-LiIrO
J. P. Hinton, S. Patankar, E. Thewalt +8
We report equilibrium and nonequilibrium optical measurements on the recently synthesized "harmonic" honeycomb iridate γ-LiIrO (LIO), as well as the layered honeycomb irida…
Magnetoresistance near a quantum critical point
I. M. Hayes, Nicholas P. Breznay, Toni Helm +5
In metals near a quantum critical point, the electrical resistance is thought to be determined by the lifetime of the carriers of current, rather than the scattering from defects.…
A new spin-anisotropic harmonic honeycomb iridate
Kimberly A. Modic, Tess E. Smidt, Itamar Kimchi +14
The physics of Mott insulators underlies diverse phenomena ranging from high temperature superconductivity to exotic magnetism. Although both the electron spin and the structure of…
Observation of the ghost critical field for superconducting fluctuations in a disordered TaN thin film
Nicholas P. Breznay, Aharon Kapitulnik
We experimentally study the ghost critical field (GCF), a magnetic field scale for the suppression of superconducting fluctuations, using Hall effect and magnetoresistance measurem…
Weak antilocalization and disorder-enhanced electron interactions in crystalline GeSbTe
Nicholas P. Breznay, Hanno Volker, Alexander Palevski +3
Phase change materials can be reversibly switched between amorphous and crystalline states and often show strong contrast in the optical and electrical properties of these two phas…
Hall conductivity dominated by fluctuations near the superconducting transition in disordered films
Nicholas P. Breznay, Karen Michaeli, Konstantin S. Tikhonov +3
We have studied the Hall effect in superconducting tantalum nitride films. We find a large contribution to the Hall conductivity near the superconducting transition, which we can t…
Correlation of anomalous scattering and superconductivity in PbTlTe doped with additional indium donors
A. S. Erickson, N. P. Breznay, E. A. Nowadnick +2
Recent evidence for a charge-Kondo effect in superconducting samples of PbTlTe [1] has brought renewed attention to the possibility of negative U superconductivity in t…
The approach to a superconductor-to-Bose-insulator transition in disordered films
Myles A. Steiner, Nicholas P. Breznay, Aharon Kapitulnik
Through a detailed study of scaling near the magnetic field-tuned superconductor-to-insulator transition in strongly disordered films, we find that results for a variety of materia…