R. J. Needs

27.3k total citations · 8 hit papers
300 papers, 19.9k citations indexed

About

R. J. Needs is a scholar working on Atomic and Molecular Physics, and Optics, Materials Chemistry and Geophysics. According to data from OpenAlex, R. J. Needs has authored 300 papers receiving a total of 19.9k indexed citations (citations by other indexed papers that have themselves been cited), including 193 papers in Atomic and Molecular Physics, and Optics, 127 papers in Materials Chemistry and 106 papers in Geophysics. Recurrent topics in R. J. Needs's work include Advanced Chemical Physics Studies (136 papers), High-pressure geophysics and materials (106 papers) and Quantum, superfluid, helium dynamics (52 papers). R. J. Needs is often cited by papers focused on Advanced Chemical Physics Studies (136 papers), High-pressure geophysics and materials (106 papers) and Quantum, superfluid, helium dynamics (52 papers). R. J. Needs collaborates with scholars based in United Kingdom, United States and Japan. R. J. Needs's co-authors include Chris J. Pickard, N. D. Drummond, G. Rajagopal, W. M. C. Foulkes, M. D. Towler, A. Mújica, R. W. Godby, Volker Heine, Alfonso Muñoz and Pablo López Ríos and has published in prestigious journals such as Nature, Proceedings of the National Academy of Sciences and Journal of the American Chemical Society.

In The Last Decade

R. J. Needs

297 papers receiving 19.3k citations

Hit Papers

5 papers align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Quantum Monte Carlo simulations of solids

2001 1.6k citations W. M. C. Foulkes, R. J. Needs et al. profile →
Ab initiorandom structure searching

2011 927 citations Chris J. Pickard, R. J. Needs profile →
High-pressure phases of group-IV, III–V, and II–VI compounds

2003 817 citations A. Mújica, R. J. Needs et al. profile →
Hydrogen Clathrate Structures in Rare Earth Hydrides at High Pressures: Possible Route to Room-Temperature Superconductivity

2017 649 citations Chris J. Pickard, R. J. Needs et al. Physical Review Letters profile →
Structure of phase III of solid hydrogen

2007 588 citations Chris J. Pickard, R. J. Needs profile →
High-Pressure Phases of Silane

2006 577 citations Chris J. Pickard, R. J. Needs Physical Review Letters profile →
Structure prediction drives materials discovery

2019 509 citations Chris J. Pickard, R. J. Needs et al. profile →
High-Pressure Hydrogen Sulfide from First Principles: A Strongly Anharmonic Phonon-Mediated Superconductor

2015 370 citations Ion Errea, Matteo Calandra et al. Physical Review Letters profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
R. J. Needs United Kingdom	70	10.5k	10.1k	5.5k	3.9k	3.5k	300	19.9k
David M. Ceperley United States	66	9.9k 0.9×	20.1k 2.0×	4.6k 0.8×	6.6k 1.7×	3.9k 1.1×	225	28.7k
Stefano Baroni Italy	60	15.0k 1.4×	8.0k 0.8×	3.9k 0.7×	3.7k 0.9×	5.9k 1.7×	248	23.4k
N. W. Ashcroft United States	64	10.6k 1.0×	7.8k 0.8×	6.9k 1.2×	4.4k 1.1×	2.0k 0.6×	286	21.3k
Stefano de Gironcoli Italy	49	13.9k 1.3×	5.8k 0.6×	3.7k 0.7×	3.4k 0.9×	4.6k 1.3×	152	20.6k
R. Jones United Kingdom	72	13.0k 1.2×	10.0k 1.0×	2.4k 0.4×	2.4k 0.6×	9.0k 2.5×	588	23.1k
José Luı́s Martins United States	42	12.9k 1.2×	9.1k 0.9×	2.2k 0.4×	2.0k 0.5×	6.4k 1.8×	89	21.2k
Xavier Gonze Belgium	68	15.9k 1.5×	7.4k 0.7×	2.7k 0.5×	3.1k 0.8×	6.7k 1.9×	235	22.8k
Paolo Giannozzi Italy	36	10.9k 1.0×	4.6k 0.5×	2.7k 0.5×	2.5k 0.6×	4.2k 1.2×	102	15.9k
Erio Tosatti Italy	74	8.6k 0.8×	10.2k 1.0×	1.9k 0.4×	3.8k 1.0×	3.7k 1.1×	547	19.7k
Volker Heine United Kingdom	66	8.3k 0.8×	8.0k 0.8×	2.5k 0.5×	3.2k 0.8×	3.8k 1.1×	248	17.7k

Countries citing papers authored by R. J. Needs

Since Specialization

Citations

This map shows the geographic impact of R. J. Needs's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by R. J. Needs with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites R. J. Needs more than expected).

Fields of papers citing papers by R. J. Needs

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by R. J. Needs. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by R. J. Needs. The network helps show where R. J. Needs may publish in the future.

Co-authorship network of co-authors of R. J. Needs

This figure shows the co-authorship network connecting the top 25 collaborators of R. J. Needs. A scholar is included among the top collaborators of R. J. Needs based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with R. J. Needs. R. J. Needs is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Hou, Mingqiang, Yu He, Bo Gyu Jang, et al.. (2021). Superionic iron oxide–hydroxide in Earth’s deep mantle. Nature Geoscience. 14(3). 174–178. 48 indexed citations

Nelson, J., R. J. Needs, & Chris J. Pickard. (2021). Navigating the Ti-C-O and Al-C-O ternary systems through theory-driven discovery. Physical Review Materials. 5(12). 5 indexed citations

Needs, R. J., et al.. (2020). Stability and superconductivity of lanthanum and yttrium decahydrides. Physical review. B.. 101(22). 23 indexed citations

Gao, Hao, Cong Liu, Andreas Hermann, et al.. (2020). Coexistence of plastic and partially diffusive phases in a helium-methane compound. National Science Review. 7(10). 1540–1547. 39 indexed citations

Errea, Ion, Matteo Calandra, Chris J. Pickard, et al.. (2016). Quantum hydrogen-bond symmetrization in the superconducting hydrogen sulfide system. Nature. 532(7597). 81–84. 217 indexed citations

Struzhkin, Viktor V., Duck Young Kim, Elissaios Stavrou, et al.. (2016). Synthesis of sodium polyhydrides at high pressures. Nature Communications. 7(1). 12267–12267. 78 indexed citations

Needs, R. J. & Chris J. Pickard. (2016). Perspective: Role of structure prediction in materials discovery and design. APL Materials. 4(5). 61 indexed citations

Nelson, J., R. J. Needs, & Chris J. Pickard. (2015). Calcium peroxide from ambient to high pressures. UCL Discovery (University College London). 20 indexed citations

Yang, Zeng-hui, J. R. Trail, Aurora Pribram−Jones, et al.. (2014). Exact ensemble density-functional theory for excited states. arXiv (Cornell University). 1 indexed citations

10.

Shepherd, James J., R. J. Needs, N. D. Drummond, et al.. (2013). Full Configuration Interaction Quantum Monte Carlo and Diffusion Monte Carlo: A Comparative Study of the 3D Homogeneous Electron Gas. Bulletin of the American Physical Society. 2013. 1 indexed citations

11.

Drummond, N. D., Nigel R. Cooper, R. J. Needs, & G. V. Shlyapnikov. (2011). Quantum Monte Carlo calculation of the zero-temperature phase diagram of the two-component fermionic hard-core gas in two dimensions. Physical Review B. 83(19). 14 indexed citations

12.

Drummond, N. D., et al.. (2008). Finite-size errors in continuum quantum Monte Carlo calculations. Physical Review B. 78(12). 160 indexed citations

13.

Drummond, N. D., Andrew Williamson, R. J. Needs, & Giulia Galli. (2005). Electron Emission from Diamondoids: A Diffusion Quantum Monte Carlo Study. Physical Review Letters. 95(9). 96801–96801. 138 indexed citations

14.

Drummond, N. D., M. D. Towler, & R. J. Needs. (2004). Jastrow correlation factor for atoms, molecules, and solids. Physical Review B. 70(23). 274 indexed citations

15.

Needs, R. J., et al.. (2003). Free-energy calculations of intrinsic point defects in silicon. Physical review. B, Condensed matter. 68(23). 74 indexed citations

16.

Nekovee, Maziar, W. M. C. Foulkes, & R. J. Needs. (2001). Quantum Monte Carlo Analysis of Exchange and Correlation in the Strongly Inhomogeneous Electron Gas. Physical Review Letters. 87(3). 36401–36401. 33 indexed citations

17.

Mújica, A., et al.. (2001). Comparative Study of Novel Structures in Silicon and Germanium. physica status solidi (b). 223(2). 379–384. 19 indexed citations

18.

Kent, Paul R. C., Randolph Q. Hood, M. D. Towler, R. J. Needs, & G. Rajagopal. (1998). Quantum Monte Carlo calculations of the one-body density matrix and excitation energies of silicon. Physical review. B, Condensed matter. 57(24). 15293–15302. 38 indexed citations

19.

Fraser, Louisa, W. M. C. Foulkes, G. Rajagopal, et al.. (1996). Finite-size effects and Coulomb interactions in quantum Monte Carlo calculations for homogeneous systems with periodic boundary conditions. Physical review. B, Condensed matter. 53(4). 1814–1832. 191 indexed citations

20.

Godby, R. W. & R. J. Needs. (1989). The metal-insulator transition in quasiparticle theory and Kohn-Sham theory. White Rose Research Online (University of Leeds, The University of Sheffield, University of York). 10(1). 28–34. 3 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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