K. E. Gray

9.5k citations

245 papers · 7.9k · 1 hit paper · h-index 46

Impact in

Condensed Matter Physics top 0.1%
- Physics of Superconductivity and Magnetism
- Advanced Condensed Matter Physics
- Superconductivity in MgB2 and Alloys
Electronic, Optical and Magnetic Materials top 1%
- Iron-based superconductors research
- Magnetic and transport properties of perovskites and related materials

Papers in

Condensed Matter Physics 157
- Physics of Superconductivity and Magnetism 140
- Advanced Condensed Matter Physics 57
- Superconductivity in MgB2 and Alloys 27
Ocean Engineering 71
- Drilling and Well Engineering 66

Co-authors: John Francis Zasadzinski (44 shared papers)Yongcun Feng (23 shared papers)David G. Hinks (26 shared papers)R. T. Kampwirth (30 shared papers)R.T. McLamore (3 shared papers)Lutfi Ozyuzer (25 shared papers)N. Miyakawa (14 shared papers)Ulrich Welp (12 shared papers)
Journals: Physica C Superconductivity (20 papers)Physical Review Letters (19 papers)IEEE Transactions on Applied Superconductivity (15 papers)Journal of Petroleum Science and Engineering (12 papers)Applied Physics Letters (9 papers)
Partner nations: United States Türkiye Japan

In The Last Decade

K. E. Gray

239 papers receiving 7.6k citations

K. E. Gray's Hit Papers

align trajectories log scale

Emission of Coherent THz Radiation from Superconductors 2007 · 561 citations

What are hit papers?

Paper score: A paper's citations measured against the top-1% bar of its own field and year: the square root of citations ÷ bar, so 1 means right at the bar and 2 means four times its citations. The bar blends the citation counts that enter the top 1% of the paper's subfields in its year (weighted 89.5%), of those subfields over all years (0.5%) and of its year across all fields (10%); a subfield and year with fewer than 400 papers takes its year's bar. Papers from 2026 are not scored yet: in an unfinished year, when a paper appeared matters more than how it is cited.

Hit paper: A paper cited at least 1.5× the top-1% bar of its field and year: a paper score of at least √1.5.

2007 Science

Peers

Countries citing papers authored by K. E. Gray

Since Specialization

Citations

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

Fields of papers citing papers by K. E. Gray

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by K. E. Gray. 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 K. E. Gray. The network helps show where K. E. Gray may publish in the future.

Co-authors

The 25 scholars most cited alongside K. E. Gray, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with K. E. Gray Line = papers co-authored together K. E. Gray links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 245 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Emission of Coherent THz Radiation from Superconductors Science ·Lutfi Ozyuzer, Alexei E. Koshelev, Cihan Kurter, N. Gopalsami, Q. Li, Minoru Tachiki, Kazunori Kadowaki, Takashi Yamamoto Hit paper breakdown →	2007	561
2	The Mechanical Behavior of Anisotropic Sedimentary Rocks Journal of Engineering for Industry ·R.T. McLamore, K. E. Gray	1967	347
3	Effect of Cu-O layer spacing on the magnetic field induced resistive broadening of high-temperature superconductors Physica C Superconductivity ·D.H. Kim, K. E. Gray, R. T. Kampwirth, Justin C. Smith, Darrin S. Richeson, Tobin Jay Marks, J.H. Kang, John Talvacchio	1991	266
4	Strong Dependence of the Superconducting Gap on Oxygen Doping from Tunneling Measurements on Bi2Sr2CaCu2O8−δ Physical Review Letters ·N. Miyakawa, Prasenjit Guptasarma, John Francis Zasadzinski, David G. Hinks, K. E. Gray	1998	243
5	Tunnelling evidence for predominantly electron–phonon coupling in superconducting Ba1−xKxBiO3 and Nd2−xCexCuO4−y Nature ·Qiang Huang, John Francis Zasadzinski, N. Tralshawala, K. E. Gray, David G. Hinks, J. L. Peng, R. L. Greene	1990	242
6	Predominantly Superconducting Origin of Large Energy Gaps in Underdoped Bi2Sr2CaCu2O8+δ from Tunneling Spectroscopy Physical Review Letters ·N. Miyakawa, John Francis Zasadzinski, Lutfi Ozyuzer, Prasenjit Guptasarma, David G. Hinks, Christopher A. Kendziora, K. E. Gray	1999	178
7	Nonequilibrium Superconductivity, Phonons, and Kapitza Boundaries International Linear Collider ·K. E. Gray	1981	162
8	Unusual Strong-Coupling Effects in the Tunneling Spectroscopy of Optimally Doped and Overdoped Bi2Sr2CaCu2O8+δ Physical Review Letters ·N. Miyakawa, Prasenjit Guptasarma, Maria Iavarone, Lutfi Ozyuzer, John Francis Zasadzinski, P. Romano, David G. Hinks, Christopher A. Kendziora	1998	162
9	Real-time predictive capabilities of analytical and machine learning rate of penetration (ROP) models Journal of Petroleum Science and Engineering ·Cesar Soares, K. E. Gray	2018	157
10	A Review on Fracture-Initiation and -Propagation Pressures for Lost Circulation and Wellbore Strengthening SPE Drilling & Completion ·Yongcun Feng, John F. Jones, K. E. Gray	2016	155
11	Correlation of Tunneling Spectra in Bi2Sr2CaCu2O8+δ with the Resonance Spin Excitation Physical Review Letters ·John Francis Zasadzinski, Lutfi Ozyuzer, N. Miyakawa, K. E. Gray, David G. Hinks, Christopher A. Kendziora	2001	146
12	Finite-Element Studies of Near-Wellbore Region During Cementing Operations: Part I SPE Drilling & Completion ·K. E. Gray, Evgeny Podnos, E. B. Becker	2009	139
13	Possible origins of resistive tails and critical currents in high-temperature superconductors in a magnetic field Physical review. B, Condensed matter ·D. H. Kim, K. E. Gray, R. T. Kampwirth, D. M. McKay	1990	135
14	Use of machine learning and data analytics to increase drilling efficiency for nearby wells Journal of Natural Gas Science and Engineering ·Chiranth Hegde, K. E. Gray	2017	133
15	Direct observation of tetrahertz electromagnetic waves emitted from intrinsic Josephson junctions in single crystalline Bi2Sr2CaCu2O8+ Physica C Superconductivity ·Kazuo Kadowaki, Hiroshi Yamaguchi, Kohei Kawamata, Tsuyoshi Yamamoto, Hidetoshi Minami, Itsuhiro Kakeya, Ulrich Welp, Lutfi Ozyuzer	2008	130
16	Evidence for Two-Band Superconductivity from Break-Junction Tunneling on MgB2 Physical Review Letters ·Herbert Schmidt, John Francis Zasadzinski, K. E. Gray, David G. Hinks	2002	130
17	A superconducting transistor Applied Physics Letters ·K. E. Gray	1978	117
18	Interlayer tunneling model for thec-axis resistivity in high-temperature superconductors Physical Review Letters ·K. E. Gray, D. H. Kim	1993	109
19	Energy gap from tunneling and metallic contacts onto MgB2: Possible evidence for a weakened surface layer Physical review. B, Condensed matter ·Herbert Schmidt, John Francis Zasadzinski, K. E. Gray, David G. Hinks	2001	94
20	Powerful terahertz emission from Bi2Sr2CaCu2O8+δ mesa arrays Applied Physics Letters ·Timothy M. Benseman, K. E. Gray, Alexei E. Koshelev, Wai-Kwong Kwok, Ulrich Welp, Hidetoshi Minami, Kazuo Kadowaki, Takashi Yamamoto	2013	94

About K. E. Gray

K. E. Gray is a scholar working on Condensed Matter Physics, Ocean Engineering, Electronic, Optical and Magnetic Materials, Mechanical Engineering and Atomic and Molecular Physics, and Optics, having authored 245 papers that have together received 7.9k indexed citations. Recurring topics across this work include Physics of Superconductivity and Magnetism (140 papers), Drilling and Well Engineering (66 papers), Hydraulic Fracturing and Reservoir Analysis (65 papers), Advanced Condensed Matter Physics (57 papers), Magnetic and transport properties of perovskites and related materials (33 papers), Iron-based superconductors research (33 papers), Superconductivity in MgB2 and Alloys (27 papers) and Magnetic properties of thin films (23 papers). The work is most often cited by research in Condensed Matter Physics (5.0k citations), Electronic, Optical and Magnetic Materials (2.3k citations), Ocean Engineering (1.6k citations), Atomic and Molecular Physics, and Optics (1.8k citations) and Mechanics of Materials (1.1k citations). K. E. Gray has collaborated with scholars based in United States, Türkiye and Japan. Frequent co-authors include John Francis Zasadzinski, Yongcun Feng, David G. Hinks, R. T. Kampwirth, R.T. McLamore, Lutfi Ozyuzer, N. Miyakawa, Ulrich Welp, Prasenjit Guptasarma and Christopher A. Kendziora. Their work appears in journals such as Physica C Superconductivity, Physical Review Letters, IEEE Transactions on Applied Superconductivity, Journal of Petroleum Science and Engineering and Applied Physics Letters.

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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K. E. Gray's Hit Papers

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Fields of papers citing papers by K. E. Gray

All Works

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