Nature Search

Quasiparticle dynamics and spin–orbital texture of the SrTiO₃ two-dimensional electron gas

Two-dimensional electron gases in SrTiO3 offer new insights into the physics of complex oxides and offer the potential for applications in electronics. Here, King et al. show how orbital ordering, spin–orbit coupling and many-body interactions collectively shape the complex properties of these confined electron systems.

P. D. C. King
S. McKeown Walker
F. Baumberger
Research27 Feb 2014
Nature Communications

Volume: 5, P: 1-7
Spin–valley locking in the normal state of a transition-metal dichalcogenide superconductor

The origin of intertwined electronic orders in transition-metal dichalcogenides has long been debated. Here, Bawden et al. report that the normal state, from which these phases emerge, is unexpectedly spin-polarized, with spins locked to both valley and layer pseudospins.

L. Bawden
S. P. Cooil
P. D. C. King
ResearchOpen Access23 May 2016
Nature Communications

Volume: 7, P: 1-6
Atomic-scale control of competing electronic phases in ultrathin LaNiO₃

An insulating phase abruptly emerges in LaNiO₃ when its thickness is reduced to only two unit cells.

P. D. C. King
H. I. Wei
K. M. Shen
Research06 Apr 2014
Nature Nanotechnology

Volume: 9, P: 443-447
Direct observation of spin-polarized bulk bands in an inversion-symmetric semiconductor

The coupling between spin, valley and layer degrees of freedom in transition-metal dichalcogenides is shown to give rise to spin-polarized electron states, providing opportunities to create and manipulate spin and valley polarizations in bulk solids.

J. M. Riley
F. Mazzola
P. D. C. King
Research05 Oct 2014
Nature Physics

Volume: 10, P: 835-839
Creation and control of a two-dimensional electron liquid at the bare SrTiO₃ surface

Considerable attention has been given in the past few years to two-dimensional electron gases formed at the interface between two bulk insulators. It is now shown that a similar electronic system can be created on the surface of an oxide insulator simply by exposure to UV light.

W. Meevasana
P. D. C. King
Z-X. Shen
Research16 Jan 2011
Nature Materials

Volume: 10, P: 114-118
Ubiquitous formation of bulk Dirac cones and topological surface states from a single orbital manifold in transition-metal dichalcogenides

Type-I and type-II bulk Dirac cones and ladders of topological surface states are shown to form in six different transition-metal dichalcogenides.

M. S. Bahramy
O. J. Clark
P. D. C. King
Research27 Nov 2017
Nature Materials

Volume: 17, P: 21-28
Negative electronic compressibility and tunable spin splitting in WSe₂

Angle-resolved photoemission measurements of electron-doped layers of tungsten diselenide reveal signatures of negative electronic compressibility that survive to much higher carrier densities than in conventional 2D electron gases.

J. M. Riley
W. Meevasana
P. D. C. King
Research21 Sept 2015
Nature Nanotechnology

Volume: 10, P: 1043-1047
Emergent quantum confinement at topological insulator surfaces

The surface electronic structure of bismuth-chalchogenide topological insulators interfaced to air or other materials has complex features not predicted by theory. Bahramy et al. propose a model explaining the origin of these electronic states, and uncover their rich spin texture by circular dichroism experiments.

M.S. Bahramy
P.D.C King
F. Baumberger
Research23 Oct 2012
Nature Communications

Volume: 3, P: 1-7
Tailoring the nature and strength of electron–phonon interactions in the SrTiO₃(001) 2D electron liquid

The transition from a polaronic to a metallic state as the carrier density increases in strontium titanate overlaps with the onset and peak of the bulk superconducting behaviour.

Z. Wang
S. McKeown Walker
F. Baumberger
Research11 Apr 2016
Nature Materials

Volume: 15, P: 835-839
Maximal Rashba-like spin splitting via kinetic-energy-coupled inversion-symmetry breaking

Asymmetry in surface hopping energies in different atomic layers of delafossite oxides results in some of the largest known Rashba-like spin splittings.

Veronika Sunko
H. Rosner
P. D. C. King
Research28 Sept 2017
Nature

Volume: 549, P: 492-496

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