Agnikumar G. Vedeshwar

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Agnikumar G. Vedeshwar
Agnikumar G Vedeshwar at Delhi University in January 2019.jpg
Agnikumar G Vedeshwar at Delhi University in January 2019
Born29 July 1959 (1959-07-29) (age 65)
Gokarana, Karnataka, India Flag of India.svg
Nationality Flag of India.svg Indian
Alma mater Karnatak University
Known forExperimental Condensed matter physics, Solid-state physics, Materials physics, Materials science
Scientific career
FieldsExperimental Condensed matter physics, Solid-state physics, Materials physics, Materials science
Institutions University of Delhi
Doctoral advisor A. M. Karguppikar (Dharwad)

Agnikumar G. Vedeshwar (born July 1959) is an Indian experimental physicist specialized in experimental Condensed matter physics, Solid-state physics, Materials physics, Materials science, Superconductivity and is known for his work in several areas in this field that include: Transport (Hall effect, Thermopower and resistivity) and Optical properties both at low and high temperatures of Semiconductors and High-temperature superconductivity in both bulk and Thin film forms, Thin film fabrication, Vacuum Technology, Photolithography, Electron beam gun, RF Sputtering, device fabrication. He is also known for his work on the analytical techniques: X-ray diffraction, SEM, TEM, ESCA, DTA, EPR and Raman effect in solids, UV/VIS spectroscopy of solids, Thin films for Optical Storage, Surfaces, Interfaces, Nanotechnology, Nanomaterials and Quantum dots, Optical Properties, DFT calculations of Electronic structure, Elastic properties and Optical properties of solids.

Contents

Education and career

Vedeshwar obtained his B.Sc. (1981), M.Sc. (1983), Ph.D. (1988) from the Karnatak University. He was a National Superconductivity Fellow at the Department of Physics, IIT Kanpur during 1988-1990, where he was involved in the research and teaching. He was a National Superconductivity Fellow of Department of Science and Technology of India at the Materials Science Division, I.G.C.A.R., Kalpakkam, during 1990-1993. In 1993, he joined the Department of Physics and Astrophysics, University of Delhi as a permanent faculty and worked as a Lecturer during 1993-1998, as a Senior Lecturer during 1998-2002, as a Reader during 2002-2005 and as an Associate Professor during 2006-2009. Eventually, in 2009, he was appointed as a Full Professor of Physics at the Department of Physics and Astrophysics, University of Delhi where he got promoted as a Senior Professor of Physics in December 2019 and he continues to hold that position till date. [1] [2]

Scientific research

Vedeshwar is known for his work in several areas in experimental Condensed matter physics that include: Transport (Hall effect, Thermopower and resistivity) and optical properties both at low and high temperatures of Semiconductors and High-temperature superconductivity in both bulk and Thin film forms, Thin film fabrication, Vacuum Technology, Photolithography, Electron beam gun, RF Sputtering, device fabrication. He is also known for his work on the analytical techniques: X-ray diffraction, SEM, TEM, ESCA, DTA, EPR and Raman effect in solids, UV/VIS spectroscopy of solids, Thin films for Optical Storage, Surfaces, Interfaces, Nanotechnology, Nanomaterials and Quantum dots, optical Properties, DFT calculations of Electronic structure, Elastic properties and optical properties of solids. [3] [1] [2]

Vedeshwar has written over 80 scientific articles, which have received over 1000 citations, [4] many of them are scholar articles that cover several important topics not only in experimental but also in theoretical condensed matter physics and are spread over a long duration of time beginning since his graduate student days till date: [5] [6] [7] [8] [9] [10] His work has made a very significant impact on the studies in several important domains that include e.g., a study of thin films, effect of energetic argon ion irradiation, [11] optical band gap [12] coherence-mediated squeezing and quantum dots [6] quantum dot like behavior of ultra thin films like PbI2 and their optical properties, quantum confinement and residual stress effect, formation of 1D nanowires and 2D nanophases, quantum dot like behavior of ultra thin PbI2 films, quantum confinement in amorphous InSb and so on. [13]

Related Research Articles

In condensed matter physics and materials science, an amorphous solid is a solid that lacks the long-range order that is characteristic of a crystal. The terms "glass" and "glassy solid" are sometimes used synonymously with amorphous solid; however, these terms refer specifically to amorphous materials that undergo a glass transition. Examples of amorphous solids include glasses, metallic glasses, and certain types of plastics and polymers.

<span class="mw-page-title-main">Condensed matter physics</span> Branch of physics

Condensed matter physics is the field of physics that deals with the macroscopic and microscopic physical properties of matter, especially the solid and liquid phases, that arise from electromagnetic forces between atoms and electrons. More generally, the subject deals with condensed phases of matter: systems of many constituents with strong interactions among them. More exotic condensed phases include the superconducting phase exhibited by certain materials at extremely low cryogenic temperatures, the ferromagnetic and antiferromagnetic phases of spins on crystal lattices of atoms, the Bose–Einstein condensates found in ultracold atomic systems, and liquid crystals. Condensed matter physicists seek to understand the behavior of these phases by experiments to measure various material properties, and by applying the physical laws of quantum mechanics, electromagnetism, statistical mechanics, and other physics theories to develop mathematical models and predict the properties of extremely large groups of atoms.

<span class="mw-page-title-main">Superconductivity</span> Electrical conductivity with exactly zero resistance

Superconductivity is a set of physical properties observed in superconductors: materials where electrical resistance vanishes and magnetic fields are expelled from the material. Unlike an ordinary metallic conductor, whose resistance decreases gradually as its temperature is lowered, even down to near absolute zero, a superconductor has a characteristic critical temperature below which the resistance drops abruptly to zero. An electric current through a loop of superconducting wire can persist indefinitely with no power source.

Solid-state physics is the study of rigid matter, or solids, through methods such as solid-state chemistry, quantum mechanics, crystallography, electromagnetism, and metallurgy. It is the largest branch of condensed matter physics. Solid-state physics studies how the large-scale properties of solid materials result from their atomic-scale properties. Thus, solid-state physics forms a theoretical basis of materials science. Along with solid-state chemistry, it also has direct applications in the technology of transistors and semiconductors.

<span class="mw-page-title-main">Molecular-beam epitaxy</span> Crystal growth process

Molecular-beam epitaxy (MBE) is an epitaxy method for thin-film deposition of single crystals. MBE is widely used in the manufacture of semiconductor devices, including transistors. MBE is used to make diodes and MOSFETs at microwave frequencies, and to manufacture the lasers used to read optical discs.

<span class="mw-page-title-main">History of superconductivity</span>

Superconductivity is the phenomenon of certain materials exhibiting zero electrical resistance and the expulsion of magnetic fields below a characteristic temperature. The history of superconductivity began with Dutch physicist Heike Kamerlingh Onnes's discovery of superconductivity in mercury in 1911. Since then, many other superconducting materials have been discovered and the theory of superconductivity has been developed. These subjects remain active areas of study in the field of condensed matter physics.

<span class="mw-page-title-main">National High Magnetic Field Laboratory</span> Magnetism research institute in the United States

The National High Magnetic Field Laboratory (MagLab) is a facility at Florida State University, the University of Florida, and Los Alamos National Laboratory in New Mexico, that performs magnetic field research in physics, biology, bioengineering, chemistry, geochemistry, biochemistry. It is the only such facility in the US, and is among twelve high magnetic facilities worldwide. The lab is supported by the National Science Foundation and the state of Florida, and works in collaboration with private industry.

Physica is a Dutch series of peer-reviewed, scientific journals of physics by Elsevier. It started out in 1921 as a journal of the Nederlandse Natuurkundige Vereniging that published mostly in Dutch. In 1934 it was taken over by the North-Holland Publishing Company, keeping the same name but with a new volume numbering. The single journal Physica was split in a three-part series in 1975. Physica D was created in 1980, and Physica E in 1998. It was published in Utrecht until 2007, and is now published in Amsterdam by Elsevier.

The Nevill Mott Medal and Prize is an award presented in selected years by the Institute of Physics in the United Kingdom, for distinguished research in condensed matter or materials physics. It was first established in 1997 thanks to a donation from Sir Nevill Mott's family. Sir Nevill Mott was one of the outstanding British condensed matter theorists and won a Nobel Prize in Physics in 1977. He died in 1996. The award consists of a silver medal and a prize of £1000.

<span class="mw-page-title-main">The Racah Institute of Physics</span> Institute at the Hebrew University of Jerusalem

The Racah Institute of Physics is an institute at the Hebrew University of Jerusalem, part of the faculty of Mathematics and Natural Sciences on the Edmund J. Safra Campus in the Givat Ram neighborhood of Jerusalem.

The EPS CMD Europhysics Prize is awarded since 1975 by the Condensed Matter Division of the European Physical Society, in recognition of recent work by one or more individuals, for scientific excellence in the area of condensed matter physics. It is one of Europe's most prestigious prizes in the field of condensed matter physics. Several laureates of the EPS CMD Europhysics Prize also received a Nobel Prize in Physics or Chemistry.

<span class="mw-page-title-main">Laboratoire de Physique des Solides</span> Research institute of the Paris-Saclay University

The Laboratory of Solid State Physics (LPS) is a research institute of the Paris-Saclay University, associated to the National Center of Scientific Research (CNRS) as a joint research unit. It is located in Orsay, France, about 25 km southwest of Paris.

The Institute of Solid State Physics of the Russian Academy of Sciences is a research institution, located in the small town of Chernogolovka near Moscow in Russia. Founded on February 15, 1963, the institute has grown to become one of the largest physics institutes in the country. Its main fields of research are condensed matter physics and materials science.

<span class="mw-page-title-main">Xue Qikun</span> Chinese physicist

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Yvan J. Bruynseraede is a condensed matter experimental physicist, known for his work on multilayers and superlattices, and his interests are thin films, nanostructures, novel materials, magnetism, and superconductivity. He is currently Professor Emeritus at the Catholic University of Leuven (KULeuven), and a member of the Quantum Solid-State Physics Laboratory.

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References

  1. 1 2 "University Faculty Details Page on DU Web-site : Agnikumar G. Vedeshwar" (PDF). Du.ac.in. Retrieved 7 November 2021.
  2. 1 2 "University Faculty Details Page on DU Web-site : Agnikumar G. Vedeshwar" (PDF). Du.ac.in. Retrieved 7 November 2021.
  3. ↑ "A. VEDESHWAR | University of Delhi, Delhi | DU | Department of Physics & Astrophysics". ResearchGate.net.
  4. ↑ Scholar Profile. Scholar.google.co.in
  5. ↑ A. M. Karguppikar, A. G. Vedeshwar, Physics State Solidi (a), 95 (Issue # 2) (1986) 717-720,
  6. 1 2 P. Kumar, A. G. Vedeshwar, arXiv preprint arXiv: 2107.03849 (2021),
  7. ↑ P. Kumar, A. G. Vedeshwar, Phys. Rev. A102, (4) (2020) 043715,
  8. ↑ P. Kumar, A. G. Vedeshwar, J. Applied Phys, 123 (12)(2018)125107,
  9. ↑ A. G. Vedeshwar, J. de Physique, III5(8), (1995) 1161-1172,
  10. ↑ A. G. Vedeshwar, Solid State Comm, 74 (1), 23-25 (1990).
  11. ↑ R. S. Rawat, P. Arun, A. G. Vedeshwar, P. Lee, S. Lee, J. Applied Physics, 95 (12) (2004) 7725-7730,
  12. ↑ P. Tyagi, A. G. Vedeshwar, Bulletin of Materials Science, 24 (3), (2001) 297-300,
  13. ↑ "Agnikumar G Vedeshwar". Scholar.google.co.in.
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