Pub Date : 2005-11-01DOI: 10.1016/J.PHYSC.2007.03.186
Y. Kopaev, V. Sofronov
{"title":"Manifestation of the superconducting pairing of repulsive particles with a large total momentum in Andreev reflection","authors":"Y. Kopaev, V. Sofronov","doi":"10.1016/J.PHYSC.2007.03.186","DOIUrl":"https://doi.org/10.1016/J.PHYSC.2007.03.186","url":null,"abstract":"","PeriodicalId":15816,"journal":{"name":"Journal of Experimental and Theoretical Physics Letters","volume":"16 1","pages":"575-579"},"PeriodicalIF":0.0,"publicationDate":"2005-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86889767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-09-01DOI: 10.1142/S0219581X07004535
P. Arseyev, N. Maslova
Tunneling through a system with two discrete electron levels coupled by electron-phonon interaction is considered. The interplay between elastic and inelastic tunneling channels is analyzed not only for weak electron-phonon coupling but also for strong coupling in the resonant case. It is shown that the intensity and width of peaks in the tunneling conductivity is strongly influenced by nonequilibrium effects.
{"title":"Effects of electron-phonon interaction in tunneling processes in nanostructures","authors":"P. Arseyev, N. Maslova","doi":"10.1142/S0219581X07004535","DOIUrl":"https://doi.org/10.1142/S0219581X07004535","url":null,"abstract":"Tunneling through a system with two discrete electron levels coupled by electron-phonon interaction is considered. The interplay between elastic and inelastic tunneling channels is analyzed not only for weak electron-phonon coupling but also for strong coupling in the resonant case. It is shown that the intensity and width of peaks in the tunneling conductivity is strongly influenced by nonequilibrium effects.","PeriodicalId":15816,"journal":{"name":"Journal of Experimental and Theoretical Physics Letters","volume":"1 1","pages":"297-301"},"PeriodicalIF":0.0,"publicationDate":"2005-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89385790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2004-07-31DOI: 10.1103/PhysRevB.72.035122
A. Rubtsov, V. Savkin, A. Lichtenstein
A numerically exact continuous-time quantum Monte Carlo algorithm for finite fermionic systems with nonlocal interactions is proposed. The scheme is particularly applicable for general multiband time-dependent correlations, since it does not invoke Hubbard-Stratonovich transformation. The present determinantal grand-canonical method is based on a stochastic series expansion for the partition function in the interaction representation. The results for the Green function and for the time-dependent susceptibility of multiorbital supersymmetric impurity model with a spin-flip interaction are presented.
{"title":"Continuous-time quantum Monte Carlo method for fermions: Beyond auxiliary field framework","authors":"A. Rubtsov, V. Savkin, A. Lichtenstein","doi":"10.1103/PhysRevB.72.035122","DOIUrl":"https://doi.org/10.1103/PhysRevB.72.035122","url":null,"abstract":"A numerically exact continuous-time quantum Monte Carlo algorithm for finite fermionic systems with nonlocal interactions is proposed. The scheme is particularly applicable for general multiband time-dependent correlations, since it does not invoke Hubbard-Stratonovich transformation. The present determinantal grand-canonical method is based on a stochastic series expansion for the partition function in the interaction representation. The results for the Green function and for the time-dependent susceptibility of multiorbital supersymmetric impurity model with a spin-flip interaction are presented.","PeriodicalId":15816,"journal":{"name":"Journal of Experimental and Theoretical Physics Letters","volume":"54 3","pages":"61-65"},"PeriodicalIF":0.0,"publicationDate":"2004-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91551104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2004-07-01DOI: 10.1103/PhysRevB.71.195320
Y. Khanin, E. Vdovin
Magnetotunneling spectroscopy is used to reveal the spin splitting of the ground state of Si donors related to the X valley in an AlAs barrier. The absolute effective values of the longitudinal and transverse g factors in the AlAs barrier are found to be equal to 1.82±0.15 and 1.11±0.12, respectively.
{"title":"Spin splitting of X-valley-related donor impurity states in an AlAs barrier","authors":"Y. Khanin, E. Vdovin","doi":"10.1103/PhysRevB.71.195320","DOIUrl":"https://doi.org/10.1103/PhysRevB.71.195320","url":null,"abstract":"Magnetotunneling spectroscopy is used to reveal the spin splitting of the ground state of Si donors related to the X valley in an AlAs barrier. The absolute effective values of the longitudinal and transverse g factors in the AlAs barrier are found to be equal to 1.82±0.15 and 1.11±0.12, respectively.","PeriodicalId":15816,"journal":{"name":"Journal of Experimental and Theoretical Physics Letters","volume":"11 1","pages":"120-123"},"PeriodicalIF":0.0,"publicationDate":"2004-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73214648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2002-12-04DOI: 10.1016/S0375-9601(03)00648-0
S. A. Bulgadaev
{"title":"Duality and effective conductivity of random two-phase flat systems","authors":"S. A. Bulgadaev","doi":"10.1016/S0375-9601(03)00648-0","DOIUrl":"https://doi.org/10.1016/S0375-9601(03)00648-0","url":null,"abstract":"","PeriodicalId":15816,"journal":{"name":"Journal of Experimental and Theoretical Physics Letters","volume":"115 1","pages":"516-520"},"PeriodicalIF":0.0,"publicationDate":"2002-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72829909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Y. Lozovik, S. P. Merkulova, M. Nazarov, A. Shkurinov, P. Masselin
A new surface-sensitive method of time-resolved optical studies is proposed. The method consists in the independent excitation of several surface electromagnetic waves (SEW) by two laser femtosecond pulse beams with varied time delay Δτ and distance Δr between corresponding excitation regions on the surface. To fulfill the phase-matching condition for plasmon-photon coupling, metal grating is used. Due to nonlinear plasmon interaction, the optical radiation with ω1 + ω2 and 2ω1 − ω2 (where ω1, ω2 are corresponding laser beam frequencies) is generated. The intensity of this nonlinear response versus Δτ and Δr are studied. The direct measurements of the SEW temporal properties are presented. Experiments of this type are important for the development of femtosecond surface plasmon optics.
{"title":"Time-resolved nonlinear surface plasmon optics","authors":"Y. Lozovik, S. P. Merkulova, M. Nazarov, A. Shkurinov, P. Masselin","doi":"10.1117/12.511845","DOIUrl":"https://doi.org/10.1117/12.511845","url":null,"abstract":"A new surface-sensitive method of time-resolved optical studies is proposed. The method consists in the independent excitation of several surface electromagnetic waves (SEW) by two laser femtosecond pulse beams with varied time delay Δτ and distance Δr between corresponding excitation regions on the surface. To fulfill the phase-matching condition for plasmon-photon coupling, metal grating is used. Due to nonlinear plasmon interaction, the optical radiation with ω1 + ω2 and 2ω1 − ω2 (where ω1, ω2 are corresponding laser beam frequencies) is generated. The intensity of this nonlinear response versus Δτ and Δr are studied. The direct measurements of the SEW temporal properties are presented. Experiments of this type are important for the development of femtosecond surface plasmon optics.","PeriodicalId":15816,"journal":{"name":"Journal of Experimental and Theoretical Physics Letters","volume":"1 1","pages":"461-464"},"PeriodicalIF":0.0,"publicationDate":"2002-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88992266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2002-04-25DOI: 10.1134/1.1500729 10.1134/1.1517391
A. Golubov, M. Kupriyanov, Y. Fominov
{"title":"Nonsinusoidal current-phase relation in SFS Josephson junctions","authors":"A. Golubov, M. Kupriyanov, Y. Fominov","doi":"10.1134/1.1500729 10.1134/1.1517391","DOIUrl":"https://doi.org/10.1134/1.1500729 10.1134/1.1517391","url":null,"abstract":"","PeriodicalId":15816,"journal":{"name":"Journal of Experimental and Theoretical Physics Letters","volume":"13 1","pages":"231"},"PeriodicalIF":0.0,"publicationDate":"2002-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78939121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-07-01DOI: 10.1103/PHYSREVB.66.205412
V. Malinovskii, N. Surovtsev, A. P. Shebanin
Low-frequency (3–120 cm−1) Raman scattering in the orientationally disordered phase and the photopolymerized state of fullerite was investigated. Experimental data suggest that, by analogy with scattering in disordered media (glasses), the low-frequency spectra can be described in terms of scattering by the localized vibrational states.
{"title":"Low-frequency raman scattering in the orientationally disordered phase of a C60 crystal","authors":"V. Malinovskii, N. Surovtsev, A. P. Shebanin","doi":"10.1103/PHYSREVB.66.205412","DOIUrl":"https://doi.org/10.1103/PHYSREVB.66.205412","url":null,"abstract":"Low-frequency (3–120 cm−1) Raman scattering in the orientationally disordered phase and the photopolymerized state of fullerite was investigated. Experimental data suggest that, by analogy with scattering in disordered media (glasses), the low-frequency spectra can be described in terms of scattering by the localized vibrational states.","PeriodicalId":15816,"journal":{"name":"Journal of Experimental and Theoretical Physics Letters","volume":"30 1","pages":"62-65"},"PeriodicalIF":0.0,"publicationDate":"2000-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78087283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-12-01DOI: 10.1016/S0921-4526(99)02077-3
L. Mezhov-Deglin, A. M. Kokotin
{"title":"Condensed water in superfluid He-II","authors":"L. Mezhov-Deglin, A. M. Kokotin","doi":"10.1016/S0921-4526(99)02077-3","DOIUrl":"https://doi.org/10.1016/S0921-4526(99)02077-3","url":null,"abstract":"","PeriodicalId":15816,"journal":{"name":"Journal of Experimental and Theoretical Physics Letters","volume":"9 1","pages":"756-760"},"PeriodicalIF":0.0,"publicationDate":"1999-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88388262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1997-08-01DOI: 10.1142/S0217979298002787
R. O. Zaǐtsev
It is shown on the basis of the notion of a strong electron-electron interaction in the unit cell that a ferromagnetic instability is possible in a system with hops between manganese cations and oxygen anions. The phase diagram for the existence of ferromagnetic ordering as a function of the degrees of underfilling np and nt of the 2p6 shell of oxygen and the 3tg6 shell of manganese, respectively, is constructed.
{"title":"Ferromagnetism of manganese compounds","authors":"R. O. Zaǐtsev","doi":"10.1142/S0217979298002787","DOIUrl":"https://doi.org/10.1142/S0217979298002787","url":null,"abstract":"It is shown on the basis of the notion of a strong electron-electron interaction in the unit cell that a ferromagnetic instability is possible in a system with hops between manganese cations and oxygen anions. The phase diagram for the existence of ferromagnetic ordering as a function of the degrees of underfilling np and nt of the 2p6 shell of oxygen and the 3tg6 shell of manganese, respectively, is constructed.","PeriodicalId":15816,"journal":{"name":"Journal of Experimental and Theoretical Physics Letters","volume":"18 1","pages":"275-280"},"PeriodicalIF":0.0,"publicationDate":"1997-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88953764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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