J
J. M. Riley
Researcher at University of St Andrews
Publications - 21
Citations - 1743
J. M. Riley is an academic researcher from University of St Andrews. The author has contributed to research in topics: Electronic band structure & Band gap. The author has an hindex of 16, co-authored 21 publications receiving 1368 citations.
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Journal ArticleDOI
Direct observation of spin-polarized bulk bands in an inversion-symmetric semiconductor
J. M. Riley,Federico Mazzola,Maciej Dendzik,Matteo Michiardi,T. Takayama,T. Takayama,L. Bawden,Cecilie Skjold Granerød,M. Leandersson,Thiagarajan Balasubramanian,Moritz Hoesch,Timur K. Kim,Hidenori Takagi,Hidenori Takagi,Worawat Meevasana,Ph. Hofmann,Mohammad Saeed Bahramy,Mohammad Saeed Bahramy,Justin W. Wells,Phil D. C. King +19 more
TL;DR: In this article, the spin and angle-resolved photo-emission spectroscopy of spin-polarized bulk states in the centrosymmetric transition-metal dichalcogenide WSe has been used to show how spin splittings up to ∼ 0.5 eV result, with a spin texture that is strongly modulated in both real and momentum space.
Journal ArticleDOI
Weyl-like points from band inversions of spin-polarised surface states in NbGeSb
Igor Marković,Igor Marković,Chris Hooley,O. J. Clark,Federico Mazzola,Matthew D. Watson,J. M. Riley,K Volckaert,Kaycee Underwood,Matthew S. Dyer,Philip A. E. Murgatroyd,Keith Murphy,P. Le Fèvre,François Bertran,Jun Fujii,Ivana Vobornik,Shilong Wu,Taichi Okuda,Jonathan Alaria,Philip D. C. King +19 more
TL;DR: In this paper, a band inversion between manifolds of surface states is proposed to stabilize topological and symmetry-protected states in solids, by aliovalent substitution of Nb for Zr and Sb for S in the ZrSiS family of nonsymmorphic semimetals.
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Ubiquitous formation of bulk Dirac cones and topological surface states from a single orbital manifold in transition-metal dichalcogenides
Mohammad Saeed Bahramy,Mohammad Saeed Bahramy,O. J. Clark,Bohm-Jung Yang,Jiagui Feng,L. Bawden,J. M. Riley,Igor Marković,Igor Marković,Federico Mazzola,Veronika Sunko,Veronika Sunko,Deepnarayan Biswas,S. P. Cooil,M. R. Jorge,Justin W. Wells,M. Leandersson,Thiagarajan Balasubramanian,Jun Fujii,Ivana Vobornik,Julien E. Rault,Timur K. Kim,Moritz Hoesch,Kenjiro Okawa,M. Asakawa,Takao Sasagawa,T. Eknapakul,Worawat Meevasana,Philip D. C. King +28 more
TL;DR: In this paper, the authors focus on the transition metal dichalcogenides (TMDs) and find that these generically host a co-existence of type-I and type-II three-dimensional bulk Dirac fermions as well as ladders of topological surface states and surface resonances.
Journal ArticleDOI
Observation of Ultrafast Free Carrier Dynamics in Single Layer MoS2.
Antonija Grubišić Čabo,Jill A. Miwa,Signe S. Grønborg,J. M. Riley,Jens Christian Johannsen,Cephise Cacho,Oliver Alexander,Richard T. Chapman,Emma Springate,Marco Grioni,Jeppe V. Lauritsen,Phil D. C. King,Philip Hofmann,Søren Ulstrup +13 more
TL;DR: Time- and angle-resolved photoemission spectroscopy for a SL of MoS2 on a metallic substrate is used to ascertain a direct quasiparticle band gap of 1.95 eV and determine an ultrafast extraction of excited free carriers via the metal in contact with the SLMoS2.
Journal ArticleDOI
Fermiology and Superconductivity of Topological Surface States in PdTe2
O. J. Clark,Matthew Neat,Kenjiro Okawa,L. Bawden,Igor Marković,Igor Marković,Federico Mazzola,Jiagui Feng,Veronika Sunko,Veronika Sunko,J. M. Riley,Worawat Meevasana,Jun Fujii,Ivana Vobornik,Timur K. Kim,Moritz Hoesch,Takao Sasagawa,Peter Wahl,Mohammad Saeed Bahramy,Mohammad Saeed Bahramy,Phil D. C. King +20 more
TL;DR: In this article, the authors gratefully acknowledge support from the Leverhulme Trust, the Engineering and Physical Sciences Research Council, UK (Grant Nos. EP/M023427/1 and EP/I031014/1), the Royal Society.