A. P. Ramirez

21.6k total citations · 6 hit papers
182 papers, 17.5k citations indexed

About

A. P. Ramirez is a scholar working on Condensed Matter Physics, Electronic, Optical and Magnetic Materials and Materials Chemistry. According to data from OpenAlex, A. P. Ramirez has authored 182 papers receiving a total of 17.5k indexed citations (citations by other indexed papers that have themselves been cited), including 107 papers in Condensed Matter Physics, 83 papers in Electronic, Optical and Magnetic Materials and 60 papers in Materials Chemistry. Recurrent topics in A. P. Ramirez's work include Advanced Condensed Matter Physics (76 papers), Physics of Superconductivity and Magnetism (49 papers) and Magnetic and transport properties of perovskites and related materials (43 papers). A. P. Ramirez is often cited by papers focused on Advanced Condensed Matter Physics (76 papers), Physics of Superconductivity and Magnetism (49 papers) and Magnetic and transport properties of perovskites and related materials (43 papers). A. P. Ramirez collaborates with scholars based in United States, Germany and Netherlands. A. P. Ramirez's co-authors include P. Schiffer, Robert C. Haddon, D. W. Murphy, S‐W. Cheong, R. J. Cava, Matthew J. Rosseinsky, Wei Bao, S. H. Glarum, A. R. Kortan and T. T. M. Palstra and has published in prestigious journals such as Nature, Science and Physical Review Letters.

In The Last Decade

A. P. Ramirez

177 papers receiving 17.0k 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.

Superconductivity at 18 K in potassium-doped C60

1991 2.4k citations A. P. Ramirez et al. profile →
Low Temperature Magnetoresistance and the Magnetic Phase Diagram ofLa1−xCaxMnO3

1995 1.9k citations A. P. Ramirez et al. Physical Review Letters profile →
Strongly Geometrically Frustrated Magnets

1994 1.4k citations A. P. Ramirez profile →
Zero-point entropy in ‘spin ice’

1999 940 citations A. P. Ramirez et al. profile →
Geometrical frustration

2006 521 citations Roderich Moessner, A. P. Ramirez Physics Today profile →
Relation of structure and superconducting transition temperatures in A3C60

1991 439 citations A. P. Ramirez et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
A. P. Ramirez United States	61	9.1k	8.6k	8.1k	3.9k	2.6k	182	17.5k
T. T. M. Palstra Netherlands	67	8.4k 0.9×	9.1k 1.1×	9.8k 1.2×	2.9k 0.8×	4.4k 1.7×	230	19.3k
D. W. Murphy United States	48	7.2k 0.8×	5.7k 0.7×	3.6k 0.4×	5.7k 1.5×	2.0k 0.8×	76	13.6k
Eiji Nishibori Japan	61	9.5k 1.0×	2.4k 0.3×	4.3k 0.5×	3.1k 0.8×	2.8k 1.1×	292	13.1k
A. P. Ramirez United States	47	7.6k 0.8×	7.3k 0.8×	9.3k 1.1×	1.2k 0.3×	1.8k 0.7×	92	13.7k
Kosmas Prassides United Kingdom	47	6.6k 0.7×	2.3k 0.3×	3.1k 0.4×	4.7k 1.2×	1.2k 0.5×	299	10.4k
Jan Zaanen Netherlands	52	8.7k 0.9×	11.0k 1.3×	9.0k 1.1×	614 0.2×	2.9k 1.1×	186	21.8k
O. Jepsen Germany	56	9.7k 1.1×	9.8k 1.1×	8.0k 1.0×	916 0.2×	3.1k 1.2×	178	21.2k
Theo Siegrist United States	79	13.0k 1.4×	8.4k 1.0×	8.3k 1.0×	3.0k 0.8×	10.9k 4.2×	358	25.2k
R. L. Greene United States	63	5.4k 0.6×	10.3k 1.2×	11.6k 1.4×	456 0.1×	1.9k 0.7×	324	16.2k
J. B. Torrance United States	54	4.5k 0.5×	5.3k 0.6×	8.2k 1.0×	747 0.2×	2.1k 0.8×	124	11.5k

Countries citing papers authored by A. P. Ramirez

Since Specialization

Citations

This map shows the geographic impact of A. P. Ramirez'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 A. P. Ramirez with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites A. P. Ramirez more than expected).

Fields of papers citing papers by A. P. Ramirez

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by A. P. Ramirez. 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 A. P. Ramirez. The network helps show where A. P. Ramirez may publish in the future.

Co-authorship network of co-authors of A. P. Ramirez

This figure shows the co-authorship network connecting the top 25 collaborators of A. P. Ramirez. A scholar is included among the top collaborators of A. P. Ramirez 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 A. P. Ramirez. A. P. Ramirez 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

Azuma, Masashi, A. P. Ramirez, G. Möser, et al.. (2025). Disparities in Aortic Aneurysm Mortality Trends: Revealing Sex and Racial Inequalities. Vascular and Endovascular Surgery. 59(5). 464–470.

Lakshminarasimhan, N., et al.. (2025). Exploring Brannerite-Type Mg1−xMxV2O6 (M = Mn, Cu, Co, or Ni) Oxides: Crystal Structure and Optical Properties. Crystals. 15(1). 86–86.

Ramirez, A. P. & Sergey Syzranov. (2025). Short-range order and hidden energy scale in geometrically frustrated magnets. Materials Advances. 6(4). 1213–1229. 1 indexed citations

Li, Jun, et al.. (2024). Understanding color variation with site distribution in inverse spinel structure via neutron diffraction, magnetism, and optical studies. Progress in Solid State Chemistry. 100455–100455. 2 indexed citations

Wang, Qiuying, Xin Xin, Theeranun Siritanon, et al.. (2024). Synthesis and Optical Properties Based on Ni-Doped Zn₂SiO₄ Blue Pigments with High-NIR Reflectance. ACS Sustainable Chemistry & Engineering. 12(14). 5522–5532. 18 indexed citations

Phelan, Daniel, Feng Ye, Hong Zheng, et al.. (2023). The geometrically frustrated spin glass (Fe_1−pGa_p)₂TiO₅. Acta Crystallographica Section A Foundations and Advances. 79(a1). a247–a247. 1 indexed citations

Syzranov, Sergey & A. P. Ramirez. (2022). Eminuscent phase in frustrated magnets: a challenge to quantum spin liquids. Nature Communications. 13(1). 2993–2993. 14 indexed citations

Li, Jun, et al.. (2021). Iridium valence variation and carrier sign tuning in (Ca,Ba)xLa2−xCuIrO6 double perovskites. Physical Review Materials. 5(5). 1 indexed citations

Li, Jun, D. Haskel, Jungho Kim, et al.. (2021). Structural and electronic properties of the first iridium containing mixed B-site spinel oxide: Cu[Ir1.5Cu0.5]O4. Physical Review Materials. 5(9). 2 indexed citations

10.

Li, Jun, et al.. (2020). Os⁴⁺ Instability in the Pyrochlore Structure: Tl_2–xBi_xOs₂O_7–y. Inorganic Chemistry. 59(2). 1227–1233. 6 indexed citations

11.

Li, Jun, et al.. (2020). Influence of Alkaline-Earth-Metal Substitutions on the Bismuth Ruthenate Structure: Bi_2–xA′_xRu₂O₆O′_1–y (A′ = Mg, Ca, Sr). Inorganic Chemistry. 59(19). 14141–14151. 3 indexed citations

12.

Hauser, Jesse L., A’Lester C. Allen, Kurt P. Lindquist, et al.. (2018). Fe₃O₄@SiO₂ Nanoparticles Functionalized with Gold and Poly(vinylpyrrolidone) for Bio-Separation and Sensing Applications. ACS Applied Nano Materials. 1(3). 1406–1412. 37 indexed citations

13.

Li, Jun, et al.. (2017). Bi_2–xCa_xIr₂O_6+y Pyrochlore Phases: Structure and Properties with Varied Ir Oxidation State from 3.9+ to 4.3+. Inorganic Chemistry. 56(8). 4706–4715. 14 indexed citations

14.

Thorsmølle, V. K., Richard D. Averitt, J. Demšar, et al.. (2009). Photoexcited carrier relaxation dynamics in pentacene probed by ultrafast optical spectroscopy: Influence of morphology on relaxation processes. Physica B Condensed Matter. 404(19). 3127–3130. 21 indexed citations

15.

Moessner, Roderich & A. P. Ramirez. (2006). Geometrical frustration. Physics Today. 59(2). 24–29. 521 indexed citations breakdown →

16.

Gao, Xuan, G. S. Boebinger, A. P. Mills, et al.. (2006). Spin-polarization-induced tenfold magnetoresistivity of highly metallic two-dimensional holes in a narrowGaAsquantum well. Physical Review B. 73(24). 18 indexed citations

17.

Gao, Xuan, G. S. Boebinger, A. P. Mills, et al.. (2004). Temperature and Magnetic-Field-Enhanced Hall Slope of a Dilute 2D Hole System in the Ballistic Regime. Physical Review Letters. 93(25). 256402–256402. 17 indexed citations

18.

Gao, Xuan, A. P. Mills, A. P. Ramirez, L. N. Pfeiffer, & Kenneth West. (2002). Two-Dimensional Metal in a Parallel Magnetic Field. Physical Review Letters. 88(16). 166803–166803. 22 indexed citations

19.

Eskildsen, M. R., P. L. Gammel, Bradley P. Barber, et al.. (1998). Structural Stability of the Square Flux Line Lattice in YNi_2B_2C and LuNi_2B_2C Studied with Small Angle Neutron Scattering. APS March Meeting Abstracts. 2 indexed citations

20.

Gammel, P. L., U. Yaron, A. P. Ramirez, et al.. (1998). Structure and Correlations of the Flux Line Lattice in Crystalline Nb through the Peak Effect. Physical Review Letters. 80(4). 833–836. 5 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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