Browsing by Author "Rashba, Emmanuel"
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Bipolar Diffusion of Current Carriers in the Presence of Deep Traps
Rashba, Emmanuel; Tolpygo, K. B. (1957)We have investigated bipolar diffusion in the presence of traps, taking into consideration the dependence of minority carrier lifetime on the population of the traps, and have established criteria for the validity of the ... 
Classical Properties of LowDimensional Conductors: Giant Capacitance and NonOhmic Potential Drop
Korenblum, Boris; Rashba, Emmanuel (American Physical Society (APS), 2002)The electrical field arising around an inhomogeneous conductor when an electrical current passes through it is not screened, as distinct from 3D conductors, in lowdimensional conductors. As a result, the electrical field ... 
Complex impedance of a spin injecting junction
Rashba, Emmanuel (AIP Publishing, 2002)Theory of the ac spin injection from a ferromagneticelectrode into a normal conductor through a tunnel or Schottky contact is developed. Diffusion and relaxation of nonequilibrium spins results in a frequencydependent ... 
Diffusion theory of spin injection through resistive contacts
Rashba, Emmanuel (Springer Nature, 2002)Insertion of a resistive contact between a ferromagnetic metal and a semiconductor microstructure is of critical importance for achieving efficient spin injection into a semiconductor. However, the equations of the diffusion ... 
Driven Nonlinear Dynamics of Two Coupled ExchangeOnly Qubits
Pal, Arijeet; Rashba, Emmanuel; Halperin, Bertrand I. (American Physical Society (APS), 2014)Inspired by the creation of a fast exchangeonly qubit [Medford et al., Phys. Rev. Lett. 111, 050501 (2013)], we develop a theory describing the nonlinear dynamics of two such qubits that are capacitively coupled, when one ... 
Dynamical SelfQuenching of Spin Pumping into Double Quantum Dots
Brataas, Arne; Rashba, Emmanuel (American Physical Society (APS), 2012)Nuclear spin polarization can be pumped into spinblockaded quantum dots by multiple LandauZener passages through singlettriplet anticrossings. By numerical simulations of realistic systems with 107 nuclear spins during ... 
Dynamical spinelectric coupling in a quantum dot
Levitov, L.S.; Rashba, Emmanuel (American Physical Society (APS), 2003)Due to the spinorbital coupling in an anisotropic semiconductor quantum dot, a freely precessing electron spin produces a timedependent charge density. This creates a sizable electric field outside the dot, leading to ... 
Edge Absorption Theory in Semiconductors
Rashba, Emmanuel; Gurgenishvili, G.E. (196210)A theoretical explanation is given for anomalously high intensity of absorption edge bands related to defects. 
Efficient electron spin manipulation in a quantum well by an inplane electric field
Rashba, Emmanuel; Efros, Al. L. (AIP Publishing, 2003)Electron spins in a semiconductor quantum well couple to an electric field via spin–orbit interaction. We show that the standard spin–orbit coupling mechanisms can provide extraordinarily efficient electron spin manipulation ... 
ElectricDipole Spin Resonances
Rashba, Emmanuel; SHEKA, V.I. (Elsevier, 1991) 
Electron SpinFlip Correlations Due to Nuclear Dynamics in Driven GaAs Double Dots
Pal, Arijeet; Nichols, John; Shulman, Michael; Harvey, Shannon; Umansky, Vladimir; Rashba, Emmanuel; Yacoby, Amir; Halperin, Bertrand (American Physical Society (APS), 20170118)We present experimental data and associated theory for correlations in a series of experiments involving repeated LandauZener sweeps through the crossing point of a singlet state and a spinaligned triplet state in a GaAs ... 
Exact CNOT gates with a single nonlocal rotation for quantumdot qubits
Pal, Arijeet; Rashba, Emmanuel; Halperin, Bertrand I. (American Physical Society (APS), 2015)We investigate capacitivelycoupled exchangeonly twoqubit quantum gates based on quantum dots. For exchangeonly coded qubits electron spin S and its projection Sz are exact quantum numbers. Capacitive coupling between ... 
Excitons in incompressible quantum liquids
Rashba, Emmanuel (Walter de Gruyter GmbH, 1995)A theory of excitons in semiconductors in the Fractional Quantum Hall (FQH) Effect regime is presented. Nonconventional properties of magnetoexcitons in this regime originate from the fact that elementary excitations of ... 
Excitons: how we worked on the Volume
Rashba, Emmanuel (Elsevier BV, 2000) 
FourPartocle Anyon Exciton: Boson Approximation
Portnoi, M. E.; Rashba, Emmanuel (World Scientific Pub Co Pte Lt, 1995)A theory of anyon excitons consisting of a valence hole and three quasielectrons with electric charges –e/3 is presented. A full symmetry classification of the k = 0 states is given, where k is the exciton momentum. The ... 
Free induction signal from biexcitons and bound excitons
Rashba, Emmanuel (American Physical Society (APS), 1997)A theory of the free induction signal from biexcitons and bound excitons is presented. The simultaneous existence of the exciton continuum and a bound state is shown to result in a new type of time dependence of the free ... 
Giant spin rotation under quasiparticlephotoelectron conversion: Joint effect of sublattice interference and spinorbit coupling
Kuemmeth, Ferdinand; Rashba, Emmanuel (American Physical Society (APS), 2009)Spin and angularresolved photoemission spectroscopy is a basic experimental tool for unveiling spin polarization of electron eigenstates in crystals. We prove, by using spinorbit coupled graphene as a model, that ... 
Graphene with structureinduced spinorbit coupling: Spinpolarized states, spin zero modes, and quantum Hall effect
Rashba, Emmanuel (American Physical Society (APS), 2009)Spin splitting of the energy spectrum of singlelayer graphene on Au/Ni(111) substrate has been recently reported. I show that eigenstates of spinorbit coupled graphene are polarized inplane and are perpendicular to ... 
Hidden symmetry and magnetospectroscopy of quantum wells near filling factor v = 2
Rashba, Emmanuel; Sturge, M. D. (American Physical Society (APS), 2000)he magnetoluminescence spectra of symmetric quantum wells containing an electron gas show an abrupt changeover from Landaulevel behavior (i.e., linear shift of energy with magnetic field) to quadratic (excitonlike) behavior ... 
Hidden symmetry and the magnetically induced “Mott transition” in quantum wells containing an electron gas
Rashba, Emmanuel; Sturge, M.D.; Yoon, H.W.; Pfeiffer, L.N. (Elsevier BV, 2000)The magnetoluminescence spectra of symmetric quantum wells containing an electron gas show an abrupt transition from Landau level behavior (i.e. a linear shift of energy with field) to quadratic (excitonlike) behavior as ...