223 citations · 625 across the 11 of their papers we have counts for
11 papers
Emergent bright excitons with Rashba spin-orbit coupling in atomic monolayers
Jiayu David Cao, Gaofeng Xu, Benedikt Scharf +2
Optical properties in van der Waals heterostructures based on monolayer transition-metal dichalcogenides (TMDs), are often dominated by excitonic transitions. While intrinsic spin-…
Polarization response of spin-lasers under amplitude modulation
Gaofeng Xu, Krish Patel, Igor Zutic
Lasers with injected spin-polarized carriers show an outstanding performance in both static and dynamic operation. In addition to the intensity response of conventional lasers, wit…
Switching modulation of spin transport in ferromagnetic tetragonal silicene
Liehong Liao, Ying Ding, Fei Wan +6
We study the band structure and transport properties of ferromagnetic tetragonal silicene nanoribbons by using the non-equilibrium Green's function method. The band structure and s…
Threshold behavior in spin lasers: Spontaneous emission and nonlinear gain
Gaofeng Xu, Krish Patel, Igor Žutić
A hallmark of spin-lasers, injected with spin-polarized carriers, is their threshold behavior with the onset of stimulated emission. Unlike the single threshold in conventional las…
Intensity equations for birefringent spin lasers
Gaofeng Xu, David Cao, Velimir Labinac +1
Semiconductor spin lasers are distinguished from their conventional counterparts by the presence of spin-polarized carriers. The transfer of angular momentum of the spin-polarized…
Spin-Lasers: Spintronics Beyond Magnetoresistance
Igor Žutić, Gaofeng Xu, Markus Lindemann +7
Introducing spin-polarized carriers in semiconductor lasers reveals an alternative path to realize room-temperature spintronic applications, beyond the usual magnetoresistive effec…
Optically Probing Tunable Band Topology in Atomic Monolayers
Gaofeng Xu, Tong Zhou, Benedikt Scharf +1
In many atomically thin materials their optical absorption is dominated by excitonic transitions. It was recently found that optical selection rules in these materials are influenc…
Ultrafast spin-lasers
Markus Lindemann, Gaofeng Xu, Tobias Pusch +4
The appeal of lasers can be attributed to both their ubiquitous applications and their role as model systems for elucidating nonequilibrium and cooperative phenomena. Introducing n…
Magnetic Proximity Effects in Transition-Metal Dichalcogenides: Converting Excitons
Benedikt Scharf, Gaofeng Xu, Alex Matos-Abiague +1
The two-dimensional character and reduced screening in monolayer transition-metal dichalcogenides (TMDs) lead to the ubiquitous formation of robust excitons with binding energies o…
Toward high-frequency operation of spin lasers
Paulo E. Faria Junior, Gaofeng Xu, Jeongsu Lee +3
Injecting spin-polarized carriers into semiconductor lasers provides important opportunities to extend what is known about spintronic devices, as well as to overcome many limitatio…
Dark states of a moving mirror in the single-photon strong-coupling regime
Gao-Feng Xu, C. K. Law
We investigate an optomechanical system in which a cavity with a moving mirror is driven by two external fields. When the field frequencies match resonance conditions, we show that…