1.2k citations · 7k across the 19 of their papers we have counts for
19 papers
Strongly correlated excitonic insulator in atomic double layers
Liguo Ma, Phuong X. Nguyen, Zefang Wang +6
Excitonic insulators (EI) arise from the formation of bound electron-hole pairs (excitons) in semiconductors and provide a solid-state platform for quantum many-boson physics. Stro…
Evidence of high-temperature exciton condensation in 2D atomic double layers
Zefang Wang, Daniel A. Rhodes, Kenji Watanabe +4
A Bose-Einstein condensate is the ground state of a dilute gas of bosons, such as atoms cooled to temperatures close to absolute zero. With much smaller mass, excitons (bound elect…
Spectral and spatial isolation of single WSe quantum emitters using hexagonal boron nitride wrinkles
Raphaël S. Daveau, Tom Vandekerckhove, Arunabh Mukherjee +5
Monolayer WSe hosts bright single-photon emitters. Because of its compliance, monolayer WSe conforms to patterned substrates without breaking, thus creating the potential f…
Pressure-controlled interlayer magnetism in atomically thin CrI3
Tingxin Li, Shengwei Jiang, Nikhil Sivadas +9
Stacking order can significantly influence the physical properties of two-dimensional (2D) van der Waals materials. The recent isolation of atomically thin magnetic materials opens…
An unusual continuous paramagnetic-limited superconducting phase transition in 2D NbSe
Egon Sohn, Xiaoxiang Xi, Wen-Yu He +9
Time reversal and spatial inversion are two key symmetries for conventional Bardeen-Cooper-Schrieffer (BCS) superconductivity. Breaking inversion symmetry can lead to mixed-parity…
Spin transistor built on 2D van der Waals heterostructures
Shengwei Jiang, Lizhong Li, Zefang Wang +2
Spin transistors (whose on-off operation is achieved by electric-field-controlled spin orientation 1), if realized, can revolutionize modern electronics through the implementation…
Controlling magnetism in 2D CrI3 by electrostatic doping
Shengwei Jiang, Lizhong Li, Zefang Wang +2
The atomic thickness of two-dimensional (2D) materials provides a unique opportunity to control material properties and engineer new functionalities by electrostatic doping. Electr…
Electrical tuning of layer-polarized exciton gases in WSe2 bilayers
Zefang Wang, Yi-Hsin Chiu, Kevin Honz +2
Van der Waals heterostructures formed by stacking two-dimensional atomic crystals are a unique platform for exploring new phenomena and functionalities. Interlayer excitons, bound…
Valley Magnetoelectricity in Single-Layer MoS2
Jieun Lee, Zefang Wang, Hongchao Xie +2
Magnetoelectric (ME) effect, the phenomenon of inducing magnetization by application of an electric field or vice versa, holds great promise for magnetic sensing and switching appl…
Strongly interaction-enhanced valley magnetic response in monolayer WSe2
Zefang Wang, Kin Fai Mak, Jie Shan
Coulomb interaction between electrons lies at the heart of magnetism in solids. In contrast to conventional two-dimensional (2D) systems, electrons in monolayer transition metal di…
Valley-spin polarized Landau levels in a monolayer semiconductor
Zefang Wang, Jie Shan, kin Fai Mak
Electrons in monolayer transition metal dichalcogenides (TMDs) possess both the valley and spin degree of freedom. These internal quantum degrees of freedom have provided an ideal…
Probing the spin-polarized electronic band structure in monolayer transition metal dichalcogenides by optical spectroscopy
Zefang Wang, Liang Zhao, Kin Fai Mak +1
We study the electronic band structure in the K/K' valleys of the Brillouin zone of monolayer WSe2 and MoSe2 by optical reflection and photoluminescence spectroscopy on dual-gated…
Probing Many-Body Interactions in Monolayer Transition-Metal Dichalcogenides
Dinh Van Tuan, Benedikt Scharf, Zefang Wang +4
Many-body interactions in monolayer transition-metal dichalcogenides are strongly affected by their unique band structure. We study these interactions by measuring the energy shift…
Evidence of Ising pairing in superconducting NbSe atomic layers
Xiaoxiang Xi, Zefang Wang, Weiwei Zhao +6
Two-dimensional transition metal dichalcogenides with strong spin-orbit interactions and valley-dependent Berry curvature effects have attracted tremendous recent interests. Althou…
Strongly enhanced charge-density-wave order in monolayer NbSe
Xiaoxiang Xi, Liang Zhao, Zefang Wang +4
Two-dimensional (2D) atomic materials possess very different properties from their bulk counterparts. While changes in the single-particle electronic properties have been extensive…
Black Phosphorus Nanoelectromechanical Resonators Vibrating at Very High Frequencies
Zenghui Wang, Hao Jia, Xuqian Zheng +6
We report on experimental demonstration of a new type of nanoelectromechanical resonators based on black phosphorus crystals. Facilitated by a highly efficient dry transfer techniq…
Tightly bound excitons in monolayer WSe2
Keliang He, Nardeep Kumar, Liang Zhao +4
Exciton binding energy and excited states in monolayers of tungsten diselenide (WSe2) are investigated using the combined linear absorption and two-photon photoluminescence excitat…
Spin polarization separation of reflected light at Brewster angle
Yang Lv, Zefang Wang, Yu Jin +6
A novel spin polarization separation of reflected light is observed, when a linearly polarized Gaussian beam impinges on an air-glass interface at Brewster angle. In the far-field…
Variation of polarization distribution of reflected beam caused by spin separation
Yu Jin, Zefang Wang, Yang Lv +6
The variation of polarization distribution of reflected beam at specular interface and far field caused by spin separation has been studied. Due to the diffraction effect, we find…