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14 papers
Probing the Potential Profile of Twisted Bilayer Graphene via Fabry-Pérot Interference
Curtis McDowell, Alina Mreńca-Kolasińska, Kenji Watanabe +3
We use Fabry-Pérot interference to probe the internal potential profile of large-angle twisted bilayer graphene. We trace anomalous resistance oscillations in the nominally unipola…
Probing the Anisotropic Fermi Surface in Tetralayer Graphene via Transverse Magnetic Focusing
Illias Klanurak, Kenji Watanabe, Takashi Taniguchi +2
Bernal-stacked tetralayer graphene (4LG) exhibits intriguing low-energy properties, featuring two massive subbands and showcasing diverse features of topologically distinct, anisot…
Magnetoconductance Oscillations in Electron-hole Hybridization Gaps and Valley Splittings in Tetralayer Graphene
Illias Klanurak, Kenji Watanabe, Takashi Taniguchi +2
We investigate magnetotransport on Bernal-stacked tetralayer graphene whose band structure consists of two massive subbands with different effective masses. Under a finite displace…
Landau level splittings, phase transitions, and non-uniform charge distribution in trilayer graphene
Leonardo C. Campos, Thiti Taychatanapat, Maksym Serbyn +5
We report on magneto-transport studies of dual-gated, Bernal-stacked trilayer graphene (TLG) encapsulated in boron nitride crystals. We observe a quantum Hall effect staircase whic…
Conductance oscillations induced by ballistic snake states in a graphene heterojunction
Thiti Taychatanapat, Jun You Tan, Yuting Yeo +3
The realization of p-n junctions in graphene, combined with the gapless and chiral nature of its massless Dirac fermions has led to the observation of many intriguing phenomena suc…
Spin-Orbit Proximity Effect in Graphene
Ahmet Avsar, Jun You Tan, Jayakumar Balakrishnan +9
The development of a spintronics device relies on efficient generation of spin polarized currents and their electric field controlled manipulation. While observation of exceptional…
Electronic transport in graphene-based heterostructures
J. Y. Tan, A. Avsar, J. Balakrishnan +8
While boron nitride (BN) substrates have been utilized to achieve high electronic mobilities in graphene field effect transistors, it is unclear how other layered two dimensional (…
Electrically tunable transverse magnetic focusing in graphene
Thiti Taychatanapat, Kenji Watanabe, Takashi Taniguchi +1
Electrons in a periodic lattice can propagate without scattering for macroscopic distances despite the presence of the non-uniform Coulomb potential due to the nuclei. Such ballist…
Quantum Hall Effect, Screening and Layer-Polarized Insulating States in Twisted Bilayer Graphene
Javier D. Sanchez-Yamagishi, Thiti Taychatanapat, Kenji Watanabe +3
We investigate electronic transport in dual-gated twisted bilayer graphene. Despite the sub-nanometer proximity between the layers, we identify independent contributions to the mag…
BN/Graphene/BN Transistors for RF Applications
Han Wang, Thiti Taychatanapat, Allen Hsu +4
In this letter, we demonstrate the first BN/Graphene/BN field effect transistor for RF applications. The BN/Graphene/BN structure can preserve the high mobility of graphene, even w…
Hot Carrier-Assisted Intrinsic Photoresponse in Graphene
Nathaniel M. Gabor, Justin C. W. Song, Qiong Ma +6
Graphene is a new material showing high promise in optoelectronics, photonics, and energy-harvesting applications. However, the underlying physical mechanism of optoelectronic resp…
Quantum Hall effect and Landau level crossing of Dirac fermions in trilayer graphene
Thiti Taychatanapat, Kenji Watanabe, Takashi Taniguchi +1
We investigate electronic transport in high mobility (\textgreater 100,000 cm/Vs) trilayer graphene devices on hexagonal boron nitride, which enables the observation of…
Electronic Transport in Dual-gated Bilayer Graphene at Large Displacement Fields
Thiti Taychatanapat, Pablo Jarillo-Herrero
We study the electronic transport properties of dual-gated bilayer graphene devices. We focus on the regime of low temperatures and high electric displacement fields, where we obse…
Relaxation and Dephasing in a Two-electron 13C Nanotube Double Quantum Dot
H. O. H. Churchill, F. Kuemmeth, J. W. Harlow +7
We use charge sensing of Pauli blockade (including spin and isospin) in a two-electron 13C nanotube double quantum dot to measure relaxation and dephasing times. The relaxation tim…