107 citations · 482 across the 17 of their papers we have counts for
17 papers
Exploring the Charge Density Wave phase of 1-TaSe: Mott or Charge-transfer Gap?
C. J. Sayers, G. Cerullo, Y. Zhang +8
1-TaSe is widely believed to host a Mott metal-insulator transition in the charge density wave (CDW) phase according to the spectroscopic observation of a band gap that exte…
Spin-order-dependent magneto-elastic coupling in two dimensional antiferromagnetic MnPSe observed through Raman spectroscopy
Daniel J. Gillard, Daniel Wolverson, Oscar M. Hutchings +1
Layered antiferromagnetic materials have emerged as a novel subset of the two-dimensional family providing a highly accessible regime with prospects for layer-number-dependent magn…
Spectrally resolving the phase and amplitude of coherent phonons in the charge density wave state of 1-TaSe
Charles J. Sayers, Stefano Dal Conte, Daniel Wolverson +4
The excitation and detection of coherent phonons has given unique insights into condensed matter, in particular for materials with strong electron-phonon coupling. We report a stud…
Using in-plane anisotropy to engineer Janus monolayers of rhenium dichalcogenides
Nourdine Zibouche, Surani M. Gunasekera, Daniel Wolverson +1
The new class of Janus two-dimensional (2D) transition-metal dichalcogenides with two different interfaces are currently gaining increasing attention due to their distinct properti…
Site-specific symmetry sensitivity of angle-resolved photoemission spectroscopy in layered palladium diselenide
M. Cattelan, C. J. Sayers, D. Wolverson +1
Two-dimensional (2D) materials with puckered layer morphology are promising candidates for next-generation opto-electronics devices owing to their anisotropic response to external…
Interplay of crystal thickness and in-plane anisotropy and evolution of quasi-one dimensional electronic character in ReSe
Lewis S. Hart, Surani M. Gunasekera, James L. Webb +4
We study the valence band structure of ReSe crystals with varying thickness down to a single layer using nanoscale angle-resolved photoemission spectroscopy and density funct…
Excitonic and lattice contributions to the charge density wave in 1T-TiSe revealed by a phonon bottleneck
Hamoon Hedayat, Charles J. Sayers, Davide Bugini +10
Understanding collective electronic states such as superconductivity and charge density waves is pivotal for fundamental science and applications. The layered transition metal dich…
Electronic band structure of rhenium dichalcogenides
Surani M. Gunasekera, Daniel Wolverson, Lewis S. Hart +1
The band structures of bulk transition metal dichalcogenides ReS2 and ReSe2 are presented, showing the complicated nature of the interband transitions in these materials, with seve…
Electronic bandstructure of ReS2 by high resolution angle resolved photoemission spectroscopy
James L. Webb, Lewis S. Hart, Daniel Wolverson +3
The rhenium-based transition metal dichalcogenides (TMDs) are atypical of the TMD family due to their highly anisotropic crystalline structure and are recognized as promising mater…
Electronic bandstructure and van der Waals coupling of ReSe2 revealed by high-resolution angle-resolved photoemission spectroscopy
Lewis S Hart, James L Webb, Sara Dale +6
ReSe2 and ReS2 are unusual compounds amongst the layered transition metal dichalcogenides as a result of their low symmetry, with a characteristic in-plane anisotropy due to in-pla…
Suris tetrons: possible spectroscopic evidence for four-particle optical excitations of the 2D electron gas
A. V. Koudinov, C. Kehl, A. V. Rodina +3
The excitations of a two-dimensional electron gas in quantum wells with intermediate carrier density (~10^{11} cm^{-2}), i.e., between the exciton-trion- and the Fermi-Sea range, a…
The origin of the red luminescence in Mg-doped GaN
S. Zeng, G. N. Aliev, J. J. Davies +6
Optically-detected magnetic resonance (ODMR) and positron annihilation spectroscopy (PAS) experiments have been employed to study magnesium-doped GaN layers grown by metal-organic…
Linear polarization of the photoluminescence of quantum wells
A. V. Koudinov, N. S. Averkiev, Yu. G. Kusrayev +7
The degree and orientation of the magnetic-field induced linear polarization of the photoluminescence from a wide range of heterostructures containing (Cd,Mn)Te quantum wells betwe…
Binding Energy of Charged Excitons in ZnSe-based Quantum Wells
G. V. Astakhov, D. R. Yakovlev, V. P. Kochereshko +9
Excitons and charged excitons (trions) are investigated in ZnSe-based quantum well structures with (Zn,Be,Mg)Se and (Zn,Mg)(S,Se) barriers by means of magneto-optical spectroscopy.…
Magneto-photoluminescence studies of Zn_{1-x}Mn_xTe/ZnTe multiple quantum-well and quantum dot structures
Ivan J. Griffin, Peter J. Klar, Daniel Wolverson +4
Wide quantum dots were fabricated from multiple quantum well structures based on Zn_{1-x}Mn_xTe/ZnTe (x = 0.076) dilute magnetic semiconductors and were investigated via photolumin…
Photoluminescence and photoluminescence excitation studies of lateral size effects in Zn_{1-x}Mn_xSe/ZnSe quantum disc samples of different radii
P. J. Klar, D. Wolverson, J. J. Davies +3
Quantum disc structures (with diameters of 200 nm and 100 nm) were prepared from a Zn_{0.72}Mn_{0.28}Se/ZnSe single quantum well structure by electron beam lithography followed by…
Comparison of Zn_{1-x}Mn_xTe/ZnTe multiple-quantum wells and quantum dots by below-bandgap photomodulated reflectivity
P. J. Klar, D. Wolverson, D. E. Ashenford +2
Large-area high density patterns of quantum dots with a diameter of 200 nm have been prepared from a series of four Zn_{0.93}Mn_{0.07}Te/ZnTe multiple quantum well structures of di…