Physics and Astronomy
Recent Submissions

Orbitalselective superconductivity, gap anisotropy, and spin resonance excitations in a multiorbitalﾠtJ1J2ﾠmodel for iron pnictides
(2014)We study the orbitalselective superconducting pairing in a fiveorbital tJ1J2 model for iron pnictides. Depending on the orbital selectivity of electron correlations and the orbital characters along the Fermi surface, ... 
Cavityassisted dynamical spinorbit coupling in cold atoms
(2014)We consider ultracold atoms subjected to a cavityassisted twophoton Raman transition. The Raman coupling gives rise to effective spinorbit interaction which couples the atom's centerofmass motion to its pseudospin ... 
Topological defects of Néel order and Kondo singlet formation for the KondoHeisenberg model on a honeycomb lattice
(2014)Heavyfermion systems represent a prototypical setting to study magnetic quantum phase transitions. A particular focus has been on the physics of Kondo destruction, which captures quantum criticality beyond the Landau ... 
Enhancing the photocurrent and photoluminescence of single crystal monolayer MoS2ﾠwith resonant plasmonic nanoshells
(2014)Monolayer molybdenum disulfide (MoS2) produced by controlled vaporphase synthesis is a commercially promising new twodimensional material for optoelectronics because of its direct bandgap and broad absorption in the ... 
Role of the 245 phase in alkaline iron selenide superconductors revealed by highpressure studies
(2014)There is considerable interest in uncovering the physics of ironbased superconductivity from the alkaline iron selenides, a materials class containing an insulating phase (245 phase) and a superconducting (SC) phase. Due ... 
Effects of electronelectron interactions on the electronic Raman scattering of graphite in high magnetic fields
(2014)We report the observation of strongly temperature (T)dependent spectral lines in electronic Ramanscattering spectra of graphite in a high magnetic field up to 45 T applied along the c axis. The magnetic field quantizes ... 
Thermodynamic properties of Rashba spinorbitcoupled Fermi gas
(2014)We investigate the thermodynamic properties of a superfluid Fermi gas subject to Rashba spinorbit coupling and effective Zeeman field. We adopt a Tmatrix scheme that takes beyondmeanfield effects, which are important ... 
FiniteTemperature Spin Dynamics in a Perturbed Quantum Critical Ising Chain with an E8 Symmetry
(2014)A spectrum exhibiting E8 symmetry is expected to arise when a small longitudinal field is introduced in the transversefield Ising chain at its quantum critical point. Evidence for this spectrum has recently come from ... 
Frustration and multicriticality in the antiferromagnetic spin1 chain
(2014)The antiferromagnetic spin1 chain has a venerable history and has been thought to be well understood. Here, we show that inclusion of both nextnearestneighbor (α) and biquadratic (β)interactions results in a rich phase ... 
Influence of doping on the spin dynamics and magnetoelectric effect in hexagonalﾠY0.7Lu0.3MnO3
(2014)We use inelastic neutron scattering and dielectric constant measurements to study the doping influence on the spin dynamics and magnetoelectric (ME) effect in hexagonalY0.7Lu0.3MnO3. In undoped YMnO3 and LuMnO3, the Mn ... 
Spinorbitcoupled topological FuldeFerrell states of fermions in a harmonic trap
(2014)Motivated by recent experimental breakthroughs in generating spinorbit coupling in ultracold Fermi gases using Raman laser beams, we present a systematic study of spinorbitcoupled Fermi gases confined in a quasionedimensional ... 
Quantum Phases of the ShastrySutherland Kondo Lattice: Implications for the Global Phase Diagram of HeavyFermion Metals
(2014)Considerable recent theoretical and experimental effort has been devoted to the study of quantum criticality and novel phases of antiferromagnetic heavyfermion metals. In particular, quantum phase transitions have been ... 
Chalker scaling, level repulsion, and conformal invariance in critically delocalized quantum matter: Disordered topological superconductors and artificial graphene
(2014)We numerically investigate critically delocalized wave functions in models of twodimensional Dirac fermions, subject to vector potential disorder. These describe the surface states of threedimensional topological ... 
Effect of Pnictogen Height on Spin Waves in Iron Pnictides
(2014)We use inelastic neutron scattering to study spin waves in the antiferromagnetic ordered phase of iron pnictide NaFeAs throughout the Brillouin zone. Comparing with the wellstudied AFe2As2 (A=Ca, Sr, Ba) family, spin waves ... 
Evolution of London penetration depth with scattering in single crystals of K1−xNaxFe2As2
(2014)London penetration depth, λ(T), was measured in single crystals of K1−xNaxFe2As2, x=0 and 0.07, down to temperatures of 50 mK, ∼Tc/50. Isovalent substitution of Na for K significantly increases impurity scattering, ... 
Structure and composition of the superconducting phase in alkali iron selenide KyFe1.6+xSe2
(2014)We use neutron diffraction to study the temperature evolution of the average structure and local lattice distortions in insulating and superconducting potassium iron selenide KyFe1.6+xSe2. In the high temperature paramagnetic ... 
RangeSeparated Brueckner Coupled Cluster Doubles Theory
(2014)We introduce a rangeseparation approximation to coupled cluster doubles (CCD) theory that successfully overcomes limitations of regular CCD when applied to the uniform electron gas. We combine the shortrange ladder channel ... 
Communication: Projected Hartree Fock theory as a polynomial similarity transformation theory of single excitations
(2016)Spinprojected HartreeFock is written as a particlehole excitation ansatz over a symmetryadapted reference determinant. Remarkably, this expansion has an analytic expression that we were able to decipher. While the form ... 
Probing dissociative electron attachment through heavyRydberg ionpair production in Rydberg atom collisions
(2016)Electron transfer in collisions between lown, n = 12, Rydberg atoms and targets that attach lowenergy electrons can lead to the formation of heavyRydberg ionpair states comprising a weaklybound positivenegative ion ... 
Recoupling the singlet and tripletpairing channels in singlereference coupled cluster theory
(2016)It is well known that singlereference coupled cluster theory truncated to low orders of excitations gives the right answer for the right reason when systems are dominated by dynamical or weak correlation. Static or strong ...