55 citations · 137 across the 7 of their papers we have counts for
7 papers
Incipient singlet-triplet states in a hybrid mesoscopic system
Chengyu Yan, Sanjeev Kumar, Michael Pepper +5
In the present work we provide an easily accessible way to achieve the singlet-triplet Kondo effect in a hybrid system consisting of a quantum point contact (QPC) coupled to an ele…
Imaging the zigzag Wigner crystal in confinement-tunable quantum wires
Sheng-Chin Ho, Heng-Jian Chang, Chia-Hua Chang +9
The existence of Wigner crystallization, one of the most significant hallmarks of strong electron correlations, has to date only been definitively observed in two-dimensional syste…
Coherent Spin Amplification Using a Beam Splitter
Chengyu Yan, Sanjeev Kumar, Kalarikad Thomas +6
We report spin amplification using a capacitive beam splitter in n-type GaAs where the spin polarization is monitored via transverse electron focusing measurement. It is shown that…
Temperature Dependence of Spin-Split Peaks in Transverse Electron Focusing
Chengyu Yan, Sanjeev Kumar, Michael Pepper +5
We present experimental results of transverse electron-focusing measurements performed using n-type GaAs. In the presence of a small transverse magnetic field (B), electrons are fo…
Interference Effects in a Tunable Quantum Point Contact Integrated with an Electronic Cavity
Chengyu Yan, Sanjeev Kumar, Michael Pepper +5
We show experimentally how quantum interference can be produced using an integrated quantum system comprising an arch-shaped short quantum wire (or quantum point contact, QPC) of 1…
Fano Resonance in a cavity-reflector hybrid system
Chengyu Yan, Sanjeev Kumar, Michael Pepper +5
We present the results of transport measurements in a hybrid system consisting of an arch-shaped quantum point contact (QPC) and a reflector; together, they form an electronic cavi…
Many-body effects in a quasi-one-dimensional electron gas
Sanjeev Kumar, Kalarikad J. Thomas, Luke W. Smith +6
We have investigated electron transport in a quasi-one dimensional (quasi-1D) electron gas as a function of the confinement potential. At a particular potential configuration, and…