Zobrazeno 1 - 10
of 293
pro vyhledávání: '"Joseph L. Birman"'
Publikováno v:
Journal of Physics and Chemistry of Solids. 77:117-121
We re-examine the theory of Raman scattering in cubic crystals. The unconventional vector potential of vortex light leads to new selection rules. We show that in this novel optical process, (a) silent phonon modes become active and (b) scattering ten
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c07995d29174843374bedfaed67a7cbf
https://doi.org/10.1016/j.jpcs.2014.10.012
https://doi.org/10.1016/j.jpcs.2014.10.012
Autor:
Miguel Fiolhais, Joseph L. Birman
Publikováno v:
Solid State Communications. 203:51-53
The Ginzburg-Landau theory is analyzed in the case of small dimension superconductors, a couple of orders of magnitude above the coherence length, where the theory is still valid but quantum fluctuations become significant. In this regime, the potent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53b212964b912716bf5666b53933a31b
https://doi.org/10.1016/j.ssc.2014.11.009
https://doi.org/10.1016/j.ssc.2014.11.009
Publikováno v:
Solid State Communications. 163:11-14
We performed group theoretical investigation on symmetries of excitations in 3D topological insulators (TI) Bi2Te3, Bi2Se3 and Sb2Te3. Selection rules of transitions from bulk states (BS) to bulk states, surface states (SS) to surface states and bulk
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::527a4685dcc52e3b8d27519b018acc18
https://doi.org/10.1016/j.ssc.2013.03.010
https://doi.org/10.1016/j.ssc.2013.03.010
Autor:
Joseph L. Birman, Hans-Rainer Trebin
Hermann proposed that mesomorphic media should be classified by assigning certain "statistical symmetry groups" to each possible partially ordered array. Two translational groups introduced were called superordinate and subordinate. We find that the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ebb406f0e77186c49fc502316182b19
Publikováno v:
Physical Review D
Physical Review D, American Physical Society, 2016, 93 (11), pp.113021. ⟨10.1103/PhysRevD.93.113021⟩
Phys.Rev.D
Phys.Rev.D, 2016, 93 (11), pp.113021. 〈10.1103/PhysRevD.93.113021〉
Phys.Rev.D, 2016, 93 (11), pp.113021. ⟨10.1103/PhysRevD.93.113021⟩
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Physical Review D, American Physical Society, 2016, 93 (11), pp.113021. ⟨10.1103/PhysRevD.93.113021⟩
Phys.Rev.D
Phys.Rev.D, 2016, 93 (11), pp.113021. 〈10.1103/PhysRevD.93.113021〉
Phys.Rev.D, 2016, 93 (11), pp.113021. ⟨10.1103/PhysRevD.93.113021⟩
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
The authors would like to thank the Center for Theoretical Physics of the Physics Department at the New York City College of Technology, for providing computing power from their High-Performance Computing Cluster. The work of M.C.N. Fiolhais was supp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::944783e237dee6f3d86c71b51b14c989
Publikováno v:
physica status solidi (b). 249:435-447
We propose using coherent optical spectroscopy to study and control optically-forbidden (dark) biexciton states in crystals of cuprous oxide. These states are revealed in the correlation spectra cross resonances due to coherence with the quadrupole a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d64a490d8d3ad5b77af50bb90603806a
https://doi.org/10.1002/pssb.201147402
https://doi.org/10.1002/pssb.201147402
Autor:
Nguyen Que Huong, Joseph L. Birman
Publikováno v:
Journal of Luminescence. 125:196-200
The formation of a hybridization state of Wannier Mott exciton and Frenkel exciton in different hetero-structure configurations involving quantum dots is investigated. The hybrid excitons exist at the interfaces of the semiconductors quantum dots and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5b74ae0a256abbe9ee2856ec34441d3
https://doi.org/10.1016/j.jlumin.2006.08.030
https://doi.org/10.1016/j.jlumin.2006.08.030
Publikováno v:
Philosophical Magazine Letters. 87:533-539
A U(3) model proposed by Iachello for superconductivity in cuprate materials is analyzed. The model consists of s and d pairs (approximated as bosons) in a two-dimensional Fermi system with a surface. The transition occurs between a phase in which th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb93061f35423e917f6f5a5acd227762
https://doi.org/10.1080/09500830701280931
https://doi.org/10.1080/09500830701280931
Autor:
Joseph L. Birman, Carlos Trallero-Herrero, Julio C. Drake Perez, Carlos Trallero-Giner, V. Lopez Richard
Publikováno v:
physica status solidi (c). 2:3665-3668
In this paper we present an analytical method for solving the Gross-Pitaevskii equation for the Bose-Einstein condensation in the dilute atomic alkali gases. Using a variational ansatz, we are able to obtain an analytical solution for the order param
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2f9fab78b8add219702dd47a2469d52
https://doi.org/10.1002/pssc.200461762
https://doi.org/10.1002/pssc.200461762
Publikováno v:
Physics Letters A. 341:291-296
The quantum phase transitional behavior of the U ( 3 ) boson model is studied. Low-lying levels, overlaps of wavefunctions with those in the d-wave dominant and s- and d-wave mixed phases, as well as ground state occupation probabilities of s- and d-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d87586ee7cd84db7f0bf9288ebca4ebf
https://doi.org/10.1016/j.physleta.2005.04.086
https://doi.org/10.1016/j.physleta.2005.04.086