2.1k citations · 3k across the 26 of their papers we have counts for
26 papers
Selective braiding of different anyons in the even-denominator fractional quantum Hall effect
Jehyun Kim, Amit Shaer, Ravi Kumar +6
Even-denominator quantum Hall states can host several types of anyons with distinct exchange statistics. Depending on the anyon type, exchanging two quasiparticles can impart a pha…
Vortex-parity-controlled diode effect in Corbino topological Josephson junctions
Joon Young Park, Thomas Werkmeister, Jonathan Zauberman +11
Nonreciprocal supercurrents in Josephson junctions have recently emerged as a sensitive tool for investigating broken symmetries in superconducting quantum materials. Here, we repo…
Theory of reentrant superconductivity in Corbino Josephson junctions
Omri Lesser, Joon Young Park, Yuval Ronen +3
Josephson junctions made of conventional superconductors display Fraunhofer-like oscillations of the critical current as a function of the threaded magnetic flux. When the supercon…
Orbitally Tuned Composite-Fermion Pairing Transitions in Bilayer Graphene
Ravi Kumar, Tomer Firon, André Haug +6
The effective interaction between composite fermions, set entirely by the Coulomb potential and the underlying electronic Landau level orbitals, can stabilize exotic fractional qua…
Interaction-driven quantum phase transitions between topological and crystalline orders of electrons
André Haug, Ravi Kumar, Tomer Firon +5
Topological and crystalline orders of electrons both benefit from enhanced Coulomb interactions in partially filled Landau levels. In bilayer graphene (BLG), the competition betwee…
Aharonov-Bohm Interference in Even-Denominator Fractional Quantum Hall States
Jehyun Kim, Himanshu Dev, Amit Shaer +9
Position exchange of non-Abelian anyons affects the quantum state of their system in a topologically-protected way. Their expected manifestations in even-denominator fractional qua…
Competing Orbital Magnetism and Superconductivity in electrostatically defined Josephson Junctions of Alternating Twisted Trilayer Graphene
Vishal Bhardwaj, Lekshmi Rajagopal, Lorenzo Arici +8
The coexistence of superconductivity and magnetism within a single material system represents a long-standing goal in condensed matter physics. Van der Waals-based moiré superlatti…
Imaging Coulomb interactions and migrating Dirac cones in twisted graphene by local quantum oscillations
Matan Bocarsly, Indranil Roy, Vishal Bhardwaj +12
Flat band moiré graphene systems have emerged as a quintessential platform to investigate correlated phases of matter. A plethora of interaction-driven ground states have been prop…
Quarter- and half-filled quantum Hall states and their topological orders revealed by daughter states in bilayer graphene
Ravi Kumar, André Haug, Jehyun Kim +8
Even-denominator fractional quantum Hall states are promising candidates for fault-tolerant quantum computing due to their underlying non-Abelian topological orders. However, the t…
Aharonov-Bohm interference and the evolution of phase jumps in fractional quantum Hall Fabry-Perot interferometers based on bi-layer graphene
Jehyun Kim, Himanshu Dev, Ravi Kumar +8
Quasi-particles in fractional quantum Hall states are collective excitations that carry fractional charge and anyonic statistics. While the fractional charge affects semi-classical…
Strongly coupled edge states in a graphene quantum Hall interferometer
Thomas Werkmeister, James R. Ehrets, Yuval Ronen +9
Electronic interferometers using the chiral, one-dimensional (1D) edge channels of the quantum Hall effect (QHE) can demonstrate a wealth of fundamental phenomena. The recent obser…
Emergent Interfacial Superconductivity between Twisted Cuprate Superconductors
S. Y. Frank Zhao, Nicola Poccia, Xiaomeng Cui +11
Twisted interfaces between stacked van der Waals cuprate crystals enable tunable Josephson coupling between in-plane anisotropic superconducting order parameters. Employing a novel…
Andreev reflection in the fractional quantum Hall state
Önder Gül, Yuval Ronen, Si Young Lee +8
We construct high-quality graphene-based van der Waals devices with narrow superconducting niobium nitride (NbN) electrodes, in which superconductivity and robust fqH coexist. We f…
Aharonov Bohm Effect in Graphene Fabry Pérot Quantum Hall Interferometers
Yuval Ronen, Thomas Werkmeister, Danial Najafabadi +10
Quantum interferometers are powerful tools for probing the wave-nature and exchange statistics of indistinguishable particles. Of particular interest are interferometers formed by…
Evidence for 4e charge of Cooper quartets in a biased multi-terminal graphene-based Josephson junction
Ko-Fan Huang, Yuval Ronen, Régis Mélin +4
In a Josephson junction (JJ), Cooper pairs are transported via Andreev bound states (ABSs) between superconductors. The ABSs in the weak link of multi-terminal (MT) JJs can coheren…
Synthesizing a Fractional v=2/3 State from Particle and Hole States
Yonatan Cohen, Yuval Ronen, Wenmin Yang +6
Topological edge-reconstruction occurs in hole-conjugate states of the fractional quantum Hall effect. The frequently studied polarized state of filling factor v=2/3 was originally…
Large Landau level splitting with tunable one-dimensional graphene superlattice probed by magneto capacitance measurements
Manabendra Kuiri, Gaurav Kumar Gupta, Yuval Ronen +2
The unique zero energy Landau Level of graphene has a particle-hole symmetry in the bulk, which is lifted at the boundary leading to a splitting into two chiral edge modes. It has…
Robust integer and fractional helical modes in the quantum Hall effect
Yuval Ronen, Yonatan Cohen, Daniel Banitt +2
Electronic systems harboring one dimensional helical modes, where the spin and momentum of the electron are locked, have lately become an important field of its own. When coupled t…
MBE growth of self-assisted InAs nanowires on graphene
Jung-Hyun Kang, Yuval Ronen, Yonatan Cohen +7
Self-assisted growth of InAs nanowires on graphene by molecular beam epitaxy is reported. Nanowires with diameter of ~50 nm and aspect ratio of up to 100 were achieved. The morphol…
Nanoscale thermal imaging of dissipation in quantum systems
Dorri Halbertal, Jo Cuppens, Moshe Ben Shalom +12
Energy dissipation is a fundamental process governing the dynamics of physical, chemical, and biological systems. It is also one of the main characteristics distinguishing quantum…
Non-local Supercurrent of Quartets in a Three-Terminal Josephson Junction
Yonatan Cohen, Yuval Ronen, Jung-Hyun Kang +4
We report an observation of a new, non dissipative and non local supercurrent, carried by quartets; each consisting of four entangled electrons. The supercurrent is a result of a n…
Charge of a quasiparticle in a superconductor
Yuval Ronen, Yonatan Cohen, Jung-Hyun Kang +5
Non-linear charge transport in SIS Josephson junctions has a unique signature in the shuttled charge quantum between the two superconductors. In the zero-bias limit Cooper pairs, e…
Non-Equilibrated Counter Propagating Edge Modes in the Fractional Quantum Hall Regime
Anna Grivnin, Hiroyuki Inoue, Yuval Ronen +4
It is well established that 'density reconstruction' at the edge of a two dimensional electron gas takes place for 'hole-conjugate' states in the fractional quantum Hall effect (su…
Proliferation of neutral modes in fractional quantum Hall states
Hiroyuki Inoue, Anna Grivnin, Yuval Ronen +3
The fractional quantum Hall effect (FQHE) is a canonical example of a topological phase in a correlated 2D electron gas under strong magnetic field. While electric currents propaga…