Zobrazeno 1 - 10
of 122
pro vyhledávání: '"Jenkins, Gregory S."'
Autor:
Wang, Yan, Gueye, Moussa, Greybush, Steven J., Greatrex, Helen, Whalen, Andrew J., Ssentongo, Paddy, Zhang, Fuqing, Jenkins, Gregory S., Schiff, Steven J.
Rainfall is an important variable to be able to monitor and forecast across Africa, due to its impact on agriculture, food security, climate related diseases and public health. Numerical Weather Models (NWM) are an important component of this work, d
Externí odkaz:
http://arxiv.org/abs/2201.02296
In this work, chiral anomalies and Drude enhancement in Weyl semimetals are separately discussed from a semi-classical and quantum perspective, clarifying the physics behind Weyl semimetals while avoiding explicit use of topological concepts. The int
Externí odkaz:
http://arxiv.org/abs/2102.00516
Autor:
Levy, Antonio L., Sushkov, Andrei B., Liu, Fengguang, Shen, Bing, Ni, Ni, Drew, Howard D., Jenkins, Gregory S.
Publikováno v:
Phys. Rev. B 101, 125102 (2020)
Chiral pumping from optical electric fields oscillating at THz frequencies is observed in the Weyl material TaAs with electric and magnetic fields aligned along both the a- and c-axes. Free carrier spectral weight enhancement is measured directly for
Externí odkaz:
http://arxiv.org/abs/1810.05660
Publikováno v:
2017 J. Phys.: Condens. Matter 29 095802
We report on temperature dependence of the infrared reflectivity spectra of a single crystalline herbertsmithite in two polarizations --- parallel and perpendicular to the kagome plane of Cu atoms. We observe anomalous broadening of the low frequency
Externí odkaz:
http://arxiv.org/abs/1608.01240
Autor:
Sushkov, Andrei B., Hofmann, Johannes B., Jenkins, Gregory S., Ishikawa, Jun, Nakatsuji, Satoru, Sarma, Sankar Das, Drew, H. Dennis
Publikováno v:
Phys. Rev. B 92, 241108 (2015)
A Weyl semimetallic state with pairs of nondegenerate Dirac cones in three dimensions was recently predicted to occur in the antiferromagnetic state of the pyrochlore iridates. Here, we show that the THz optical conductivity and temperature dependenc
Externí odkaz:
http://arxiv.org/abs/1507.01038
Autor:
Jenkins, Gregory S.
Thesis (Ph. D.) -- University of Maryland, College Park, 2003.
Thesis research directed by: Physics. Title from t.p. of PDF. X in title is subscript. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. A
Thesis research directed by: Physics. Title from t.p. of PDF. X in title is subscript. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. A
Externí odkaz:
http://hdl.handle.net/1903/24
We propose a terahertz radiation source based on the excitation of plasma resonances in graphene structures by means of mixing two NIR laser signals with a THz difference frequency. The process is the photo-thermo-electric effect which has recently b
Externí odkaz:
http://arxiv.org/abs/1311.1605
Autor:
Jenkins, Gregory S., Sushkov, Andrei B., Schmadel, Don C., Kim, M. -H., Brahlek, Matthew, Bansal, Namrata, Oh, Seongshik, Drew, H. Dennis
Publikováno v:
Phys. Rev. B 86, 235133 (2012)
We report gated terahertz Faraday angle measurements on epitaxial Bi2Se3 thin films capped with In2Se3. A plateau is observed in the real part of the Faraday angle at an onset gate voltage corresponding to no band bending at the surface which persist
Externí odkaz:
http://arxiv.org/abs/1209.1138
Autor:
Jenkins, Gregory S., Sushkov, Andrei B., Schmadel, Don C., Bichler, Max, Koblmueller, Gregor, Brahlek, Matthew, Bansal, Namrata, Oh, Seongshik, Drew, H. Dennis
Publikováno v:
Phys. Rev. B 87, 155126 (2013)
Gated terahertz cyclotron resonance measurements on epitaxial Bi2Se3 thin films capped with In2Se3 enable the first spectroscopic characterization of a single topological interface state from the vicinity of the Dirac point to above the conduction ba
Externí odkaz:
http://arxiv.org/abs/1208.3881
Autor:
Butch, Nicholas P., Kirshenbaum, Kevin, Syers, Paul, Sushkov, Andrei B., Jenkins, Gregory S., Drew, H. Dennis, Paglione, Johnpierre
Publikováno v:
Phys. Rev. B 81, 241301(R)(2010)
While evidence of a topologically nontrivial surface state has been identified in surface-sensitive measurements of Bi2Se3, a significant experimental concern is that no signatures have been observed in bulk transport. In a search for such states, no
Externí odkaz:
http://arxiv.org/abs/1003.2382