Mathias Schubert

Last updated
Mathias M. Schubert
Born (1966-10-19) October 19, 1966 (age 57)
Alma mater University of Leipzig
Scientific career
Institutions University of Leipzig
University of Nebraska-Lincoln

Mathias Michael Schubert (born 19 October 1966) is a German physicist, [1] J. A. Woollam Distinguished Professor of Electrical and Computer Engineering at the University of Nebraska-Lincoln, [2] and member of the Nebraska Center for Materials and Nanoscience. [3] He is a specialist in spectroscopic ellipsometry and has contributed to the development of blue and white LED, fast processors and efficient biological and chemical sensors. [4] [5] [6] He is also visiting professor at Linkoping University and Associate Editor of the journal Applied Physics Letters . [7] [8]

Contents

Early life and education

Schubert was born in Jena, Bezirk Gera, East Germany. He graduated high school in 1986 with vocational education as tool and die maker from the Keramische Werke in Hermsdorf. After military service he studied physics at the University of Leipzig until 1994. [9] He received a fellowship from the German Merit Foundation in 1995 for his doctoral research. In 1997 after earning his PhD he moved to the University of Nebraska-Lincoln, where he worked on infrared ellipsometry developments for characterization of semiconductors. After return to the University of Leipzig he obtained his habilitation in 2003 in experimental physics.

Research and career

In 2000, Schubert was appointed Assistant Professor (Habilitant, C1) at University of Leipzig, where he founded the Ellipsometry group. [10] In 2005 Schubert was founding member of the German Association of Ellipsometry (Paul Drude e.V.). [11] In 2005 Schubert was appointed associate professor at the University of Nebraska-Lincoln, where he founded the Complex Materials Optics Network. [12] In 2012 he became Full professor. [1] Schubert's research focuses on broad spectral range optical characterization of organic and inorganic materials. He invented and developed spectroscopic generalized ellipsometry broadly for characterization of arbitrarily anisotropic materials. [13] His research team invented the optical Hall effect for noncontact measurement of the charge carrier mass in semiconductor materials and thin film heterojunctions. [14] [15] The generalized ellipsometry concept permits analysis of optical properties of materials with all crystal classes, particularly with low symmetry such as orthorhombic, [16] monoclininc, [17] and triclinic. [18] Schubert developed a general concept for modeling the optical properties of low-symmetry materials, the eigendielectric polarization model. [19] In 2022, he demonstrated measurement of the magnetic susceptibility tensor in electron paramagnetic resonance using terahertz ellipsometry [20] and was part of a team describing a new form of coupled phonon photon states in low-symmetry materials. [21] [22] [23] [24] [25] [26]

Awards and honors

Publications

Schubert has published 338 articles, book chapters, and books, gathering more than 11,400 citations, according to Google Scholar. [35]

Related Research Articles

<span class="mw-page-title-main">Polariton</span> Quasiparticles arising from EM wave coupling

In physics, polaritons are quasiparticles resulting from strong coupling of electromagnetic waves with an electric or magnetic dipole-carrying excitation. They are an expression of the common quantum phenomenon known as level repulsion, also known as the avoided crossing principle. Polaritons describe the crossing of the dispersion of light with any interacting resonance. To this extent polaritons can also be thought of as the new normal modes of a given material or structure arising from the strong coupling of the bare modes, which are the photon and the dipolar oscillation. The polariton is a bosonic quasiparticle, and should not be confused with the polaron, which is an electron plus an attached phonon cloud.

<span class="mw-page-title-main">Ellipsometry</span> Optical technique for characterizing thin films

Ellipsometry is an optical technique for investigating the dielectric properties of thin films. Ellipsometry measures the change of polarization upon reflection or transmission and compares it to a model.

Polaritonics is an intermediate regime between photonics and sub-microwave electronics. In this regime, signals are carried by an admixture of electromagnetic and lattice vibrational waves known as phonon-polaritons, rather than currents or photons. Since phonon-polaritons propagate with frequencies in the range of hundreds of gigahertz to several terahertz, polaritonics bridges the gap between electronics and photonics. A compelling motivation for polaritonics is the demand for high speed signal processing and linear and nonlinear terahertz spectroscopy. Polaritonics has distinct advantages over electronics, photonics, and traditional terahertz spectroscopy in that it offers the potential for a fully integrated platform that supports terahertz wave generation, guidance, manipulation, and readout in a single patterned material.

Phaedon Avouris is a Greek chemical physicist and materials scientist. He is an IBM Fellow and was formerly the group leader for Nanometer Scale Science and Technology at the Thomas J. Watson Research Center in Yorktown Heights, New York.

The College of Arts and Sciences (CAS) is the liberal arts and sciences college at the University of Nebraska–Lincoln (NU) in Lincoln, Nebraska. CAS was established in 1869, the same year the University of Nebraska was founded, and is the largest of NU's nine colleges. Mark Button has served as dean of the college since 2019.

Xi-Cheng Zhang is a Chinese-born American physicist, currently serving as the Parker Givens Chair of Optics at the University of Rochester, and the director of the Institute of Optics. He is also the Chairman of the Board and President of Zomega Terahertz Corporation.

David Erik Aspnes is an American physicist and a member of the National Academy of Sciences (1998). Aspnes developed fundamental theories of the linear and nonlinear optical properties of materials and thin films, and the technology of spectroscopic ellipsometry (SE). SE is a metrology that is indispensable in the manufacture of integrated circuits.

Richard C. Powell is an American professor emeritus of physics and vice president emeritus of the University of Arizona (UA), whose career focused on research in materials science and laser optics. He served as president of the Optical Society of America in 2000.

Andrea Alù is an Italian American scientist and engineer, currently Einstein Professor of Physics at The City University of New York Graduate Center. He is known for his contributions to the fields of optics, photonics, plasmonics, and acoustics, most notably in the context of metamaterials and metasurfaces. He has co-authored over 650 journal papers and 35 book chapters, and he holds 11 U.S. patents.

<span class="mw-page-title-main">John Woollam (physicist)</span>

John Arthur Woollam is an American educator, research physicist, electrical engineer, and George Holmes Distinguished Professor at the University of Nebraska–Lincoln in Lincoln, Nebraska. He is also a successful entrepreneur who in 1987 founded the J.A. Woollam Company, an ellipsometry company based in Lincoln, Nebraska, and a world leader in the research, development, and commercialization of ellipsometry instruments. Woollam is also a known as a philanthropist and nature conservationist.

<span class="mw-page-title-main">Paul Prucnal</span> American electrical engineer

Paul R. Prucnal is an American electrical engineer. He is a professor of electrical engineering at Princeton University. He is best known for his seminal work in Neuromorphic Photonics, optical code division multiple access (OCDMA) and the invention of the terahertz optical asymmetric demultiplexor (TOAD). He is currently a fellow of IEEE for contributions to photonic switching and fiber-optic networks, Optical Society of America and National Academy of Inventors.

Kenneth Arthur Bloom is an American particle physicist. He is a full professor at the University of Nebraska–Lincoln and an Elected Fellow of the American Physical Society.

Junichiro Kono is a professor in the Departments of Electrical and Computer Engineering, Physics and Astronomy, and Materials Science and NanoEngineering, at Rice University.

Manijeh Razeghi is an Iranian-American scientist in the fields of semiconductors and optoelectronic devices. She is a pioneer in modern epitaxial techniques for semiconductors such as low pressure metalorganic chemical vapor deposition (MOCVD), vapor phase epitaxy (VPE), molecular beam epitaxy (MBE), GasMBE, and MOMBE. These techniques have enabled the development of semiconductor devices and quantum structures with higher composition consistency and reliability, leading to major advancement in InP and GaAs based quantum photonics and electronic devices, which were at the core of the late 20th century optical fiber telecommunications and early information technology.

Carina Curto is an American mathematician, a professor at Pennsylvania State University, and a Sloan Research Fellow. She is known for her work on mathematical neuroscience, including the applications of mathematics in both theoretical and computational neuroscience. Her recent work is funded by the BRAIN Initiative. She is an associate editor at SIAGA, a SIAM journal on applied algebra and geometry and on the editorial board at Physical Review Research.

<span class="mw-page-title-main">Mona Jarrahi</span> Iranian engineer (born 1979)

Mona Jarrahi is an Iranian Engineering professor at the University of California, Los Angeles. She investigates novel materials, terahertz/millimeter-wave electronics and optoelectronics, microwave photonics, imaging and spectroscopy systems.

<span class="mw-page-title-main">Willie Rockward</span> American academic

Willie S. Rockward is a physics professor and has served as the chair of the department of physics and engineering physics at Morgan State University since August of 2018. His research interests include Micro/Nano Optics Lithography, Extreme Ultraviolet Interferometry, Metamaterials, Terahertz imaging, Nanostructure Characterization, and Crossed Phase Optics. From 2018 to 2020 he was the president of the National Society of Black Physicists.

<span class="mw-page-title-main">Hui Cao</span> Chinese American physicist

Hui Cao (曹蕙) is a Chinese American physicist who is the professor of applied physics, a professor of physics and a professor of electrical engineering at Yale University. Her research interests are mesoscopic physics, complex photonic materials and devices, with a focus on non-conventional lasers and their unique applications. She is an elected member of the US National Academy of Sciences and of the American Academy of Arts and Sciences.

The University of Nebraska–Lincoln College of Engineering is the engineering college at the University of Nebraska–Lincoln (NU) in Lincoln, Nebraska. NU has offered engineering classes since 1877 and the College of Engineering was formally established in 1909. Since 1970, it has also encompassed the engineering students and facilities at the University of Nebraska Omaha. Lance Perez has served as dean of the college since 2018.

Kimani Christopher Toussaint, Jr. is an American engineer who is a professor and senior associate dean in the School of Engineering at Brown University. His research considers the development of quantitative nonlinear optical imaging methods and advanced optical techniques for nanotechnology, and the characterization of plasmonic nanostructure. He is a Fellow of Optica.

References

  1. 1 2 ieeexplore.ieee.org https://ieeexplore.ieee.org/author/37302456800 . Retrieved 2022-02-04.{{cite web}}: Missing or empty |title= (help)
  2. "Mathias Schubert | College of Engineering | University of Nebraska–Lincoln". engineering.unl.edu. Retrieved 2022-02-04.
  3. "Faculty - Schubert | Nebraska Center for Materials & Nanoscience". ncmn.unl.edu. Retrieved 2022-02-04.
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  7. 1 2 "Mathias Schubert". liu.se. Retrieved 2022-02-04.
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  10. "Homepage of the Ellipsometry Workgroup". polariton.exphysik.uni-leipzig.de. Retrieved 2022-02-01.
  11. "About us". www.ake-pdv.org. Retrieved 2022-02-01.
  12. Hofmann, Tino. "UNL - CMO Network". ellipsometry.unl.edu. Retrieved 2022-02-01.
  13. Schubert, M. (2006). "Another century of ellipsometry". Annalen der Physik. 15 (7–8): 480–497. doi: 10.1002/andp.200510204 . ISSN   1521-3889. S2CID   121050746.
  14. Schubert, Mathias; Kühne, Philipp; Darakchieva, Vanya; Hofmann, Tino (2016-08-01). "Optical Hall effect—model description: tutorial". JOSA A. 33 (8): 1553–1568. Bibcode:2016JOSAA..33.1553S. doi:10.1364/JOSAA.33.001553. ISSN   1520-8532. PMID   27505654.
  15. "US Patent for Integrated mid-infrared, far infrared and terahertz optical Hall effect (OHE) instrument, and method of use Patent (Patent # 9,851,294 issued December 26, 2017) - Justia Patents Search". patents.justia.com. Retrieved 2022-02-04.
  16. Mock, A.; Korlacki, R.; Knight, S.; Stokey, M.; Fritz, A.; Darakchieva, V.; Schubert, M. (2019-05-17). "Lattice dynamics of orthorhombic ${\mathrm{NdGaO}}_{3}$". Physical Review B. 99 (18): 184302. doi: 10.1103/PhysRevB.99.184302 . S2CID   181378425.
  17. Schubert, M.; Korlacki, R.; Knight, S.; Hofmann, T.; Schöche, S.; Darakchieva, V.; Janzén, E.; Monemar, B.; Gogova, D.; Thieu, Q.-T.; Togashi, R. (2016-03-15). "Anisotropy, phonon modes, and free charge carrier parameters in monoclinic $\ensuremath{\beta}$-gallium oxide single crystals". Physical Review B. 93 (12): 125209. arXiv: 1512.08590 . doi: 10.1103/PhysRevB.93.125209 . S2CID   8755147.
  18. Dressel, M.; Gompf, B.; Faltermeier, D.; Tripathi, A. K.; Pflaum, J.; Schubert, M. (2008-11-24). "Kramers-Kronig-consistent optical functions of anisotropic crystals: generalized spectroscopic ellipsometry on pentacene". Optics Express. 16 (24): 19770–19778. Bibcode:2008OExpr..1619770D. doi: 10.1364/OE.16.019770 . ISSN   1094-4087. PMID   19030062.
  19. Schubert, Mathias (2016-11-15). "Coordinate-Invariant Lyddane-Sachs-Teller Relationship for Polar Vibrations in Materials with Monoclinic and Triclinic Crystal Systems". Physical Review Letters. 117 (21): 215502. arXiv: 1602.08785 . Bibcode:2016PhRvL.117u5502S. doi:10.1103/PhysRevLett.117.215502. PMID   27911546. S2CID   4682436.
  20. Schubert, Mathias; Knight, Sean; Richter, Steffen; Kühne, Philipp; Stanishev, Vallery; Ruder, Alexander; Stokey, Megan; Korlacki, Rafal; Irmscher, Klaus; Neugebauer, Petr; Darakchieva, Vanya (2022-01-18). "Terahertz electron paramagnetic resonance generalized spectroscopic ellipsometry: The magnetic response of the nitrogen defect in 4H-SiC". Applied Physics Letters. 120 (10): 102101. arXiv: 2201.06695v1 . Bibcode:2022ApPhL.120j2101S. doi:10.1063/5.0082353. S2CID   246016025.
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  24. "Nebraska engineer on international research team published in February 23 issue of Nature". epscor.nebraska.edu. Retrieved 2022-03-02.
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