Zobrazeno 1 - 10
of 53
pro vyhledávání: '"M.A. Carnahan"'
Publikováno v:
Journal of Nanoelectronics and Optoelectronics. 2:83-89
Excitons are of fundamental interest and of importance foropto-electronic applications of bulk and nano-structured semiconductors.This paper discusses the utilization of ultrafast terahertz (THz) pulsesfor the study of characteristic low-energy excit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e037d48493fc65ad4271fe082d04563a
https://doi.org/10.1166/jno.2007.007
https://doi.org/10.1166/jno.2007.007
Publikováno v:
Kaindl, R.A.; Hagele, D.; Carnahan, M.A.; Lovenich, R.; & Chemla, D.S.(2003). Exciton dynamics studied via internal THz transitions. Lawrence Berkeley National Laboratory. Lawrence Berkeley National Laboratory: Lawrence Berkeley National Laboratory. Retrieved from: http://www.escholarship.org/uc/item/6nm6761r
We employ a novel, ultrafast terahertz probe to investigate the dynamical interplay of optically-induced excitons and unbound electron-hole pairs in GaAs quantum wells. Resonant creation of heavy-hole excitons induces a new low-energy oscillator link
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::efe829b4b4b006f62855b886abbee771
https://doi.org/10.1002/pssb.200303161
https://doi.org/10.1002/pssb.200303161
Autor:
A. B. Schumacher, Robert A. Kaindl, J. S. Dodge, Daniel S. Chemla, Lance L. Miller, R. Lövenich, M.A. Carnahan
Publikováno v:
Physica B: Condensed Matter. :909-912
We present evidence from both linear and nonlinear optical spectroscopy for the existence of distinct exciton types at the charge-transfer gap of Sr 2 CuO 2 Cl 2 , which are linked by strong, phonon-mediated coupling. We show how several basic optica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::daa388c41f94fe8cc73fe2e114321306
https://doi.org/10.1016/s0921-4526(01)01527-7
https://doi.org/10.1016/s0921-4526(01)01527-7
Publikováno v:
Advances in Solid State Physics ISBN: 9783540743248
We discuss time-resolved experiments that study photo-excited e-h pairs in GaAs quantum wells via their THz response. Resonant generation of excitons leads to characteristic THz spectra dominated by 1s-2p intra-excitonic transitions, which provide a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0106f8289dd4cb89ad887de35921dcbf
https://doi.org/10.1007/978-3-540-74325-5_16
https://doi.org/10.1007/978-3-540-74325-5_16
Publikováno v:
Kaindl, R.A.; Hagele, D.; Carnahan, M.A.; Lovenich, R.; & Chemla, D.S.(2004). Terahertz Probes of Transient Conducting and Insulating Phases in Quasi-2D Electron-hole Gases. Lawrence Berkeley National Laboratory. Lawrence Berkeley National Laboratory: Lawrence Berkeley National Laboratory. Retrieved from: http://www.escholarship.org/uc/item/92c3f850
We employ ultrafast terahertz (THz) pulses to study the dynamical interplay of optically-induced excitons and unbound electron-hole pairs in GaAs/AlGaAs quantum wells. A distinct low-energy oscillator appears upon resonant excitation of heavy-hole ex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::49e9b6ab38c8eb17bf962a4ec475b3e0
https://doi.org/10.1109/icimw.2004.1422184
https://doi.org/10.1109/icimw.2004.1422184
Autor:
H. Y. Zhai, Hans M. Christen, Daniel S. Chemla, Robert A. Kaindl, M. Paranthaman, Joseph Orenstein, M.A. Carnahan, D. H. Lowndes
Publikováno v:
Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference.
Summary form only given. The surprising discovery of superconductivity in MgB,' at remarkably high transition-temperatures challenges the limits of phonon-mediated superconductivity, a fundamental question in view of suggested phonon involvement in t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f4fc3536169c84b2c536c4c71d72b53
https://doi.org/10.1109/qels.2002.1031285
https://doi.org/10.1109/qels.2002.1031285
Publikováno v:
Physical Review B. 72
We report ultrafast measurements of the transient terahertz conductivity in the high-${T}_{C}$ superconductor ${\mathrm{Bi}}_{2}{\mathrm{Sr}}_{2}\mathrm{Ca}{\mathrm{Cu}}_{2}{\mathrm{O}}_{8+\ensuremath{\delta}}$. After depletion of the superconducting
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c346ff1b012b705d29e6ac7dcd3ec84
https://doi.org/10.1103/physrevb.72.060510
https://doi.org/10.1103/physrevb.72.060510
Publikováno v:
Postconference Digest Quantum Electronics and Laser Science, 2003. QELS..
We discuss experiments that resolve the time evolution of exciton populations by sensing transitions between the exciton's internal levels. The dynamical interplay of optically-induced excitons and unbound electron-hole pairs is investigated under va
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15043b1c54e39fb4ded1224b00ebf725
https://doi.org/10.1109/qels.2003.238388
https://doi.org/10.1109/qels.2003.238388
Publikováno v:
Nature. 423(6941)
Many-body systems in nature exhibit complexity and self-organization arising from seemingly simple laws. For example, the long-range Coulomb interaction between electrical charges has a simple form, yet is responsible for a plethora of bound states i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::845a33a541fdb86ebd5fb40c3b0e781a
https://pubmed.ncbi.nlm.nih.gov/12802330
https://pubmed.ncbi.nlm.nih.gov/12802330
Publikováno v:
Technical Digest. Summaries of papers presented at the Quantum Electronics and Laser Science Conference. Postconference Technical Digest (IEEE Cat. No.01CH37172).
Summary form only given. Progress towards understanding high transition-temperature superconductivity in the copper oxides (cuprates) is hindered by the coexistence of complex spin, charge and lattice degrees of freedom. Even in the undoped parent co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a96c42139d34f067e82cca087721c8c
https://doi.org/10.1109/qels.2001.961787
https://doi.org/10.1109/qels.2001.961787