Results 31 to 40 of about 167,904 (230)

Schwinger's oscillator method, supersymmetric quantum mechanics and massless particles [PDF]

, 2002
We consider the Schwinger's method of angular momentum addition using the SU(2) algebra with both a fermionic and a bosonic oscillator. We show that the total spin states obtained are: one boson singlet state and an arbitrary number of spin-1/2 states ...
Mejia, F. M., Pleitez, V.
core   +3 more sources

Levinson theorem for Dirac particles in two dimensions

, 1998
The Levinson theorem for nonrelativistic quantum mechanics in two spatial dimensions is generalized to Dirac particles moving in a central field. The theorem relates the total number of bound states with angular momentum $j$ ($j=\pm 1/2, \pm 3/2, ... $),
Lin, Qiong-gui
core   +2 more sources

Prospects of Electric Field Control in Perpendicular Magnetic Tunnel Junctions and Emerging 2D Spintronics for Ultralow Energy Memory and Logic Devices

Advanced Functional Materials, EarlyView.
Electric control of magnetic tunnel junctions offers a path to drastically reduce the energy requirements of the device. Electric field control of magnetization can be realized in a multitude of ways. These mechanisms can be integrated into existing spintronic devices to further reduce the operational energy.
Will Echtenkamp, Brahmdutta Dixit, Yifei Yang, Deyuan Lyu, Thomas Peterson, Qi Jia, Yu‐Chia Chen, Jian‐Ping Wang   +7 more
wiley   +1 more source

Magic Numbers and Optical Absorption Spectrum in Vertically Coupled Quantum Dots in the Fractional Quantum Hall Regime

, 1996
Exact diagonalization is used to study the quantum states of vertically coupled quantum dots in strong magnetic fields. We find a new sequence of angular momentum magic numbers which are a consequence of the electron correlation in the double dot.
A. J. Pernboom, C. G. Darwin, D. Yoshioka, E. Laux, G. S. Boebinger, Hideo Aoki, Hiroshi Imamura, J. J. Palacios, J. P. Eisenstein, K. Moon, Kikuo Cho, L. Brey, O. Keller, P. A. Maksym, P. A. Maksym, Peter A. Maksym, S. C. Benjamin, S. Kivelson, S. M. Girvin, T. Kimura, T. Nakajima, T. Nakajima, V. Fock, W. Kohn, W. Y. Ruan, Y. W. Suen   +25 more
core   +1 more source

Reconfigurable Three‐Dimensional Superconducting Nanoarchitectures

Advanced Functional Materials, EarlyView.
3D superconducting nanostructures offer new possibilities for emergent physical phenomena. However, fabricating complex geometries remains challenging. Here 3D nanoprinting of complex 3D superconducting nanoarchitectures is established. As well as propagating superconducting vortices in 3D, anisotropic superconducting properties with geometric ...
Elina Zhakina, Luke Alexander Turnbull, Weijie Xu, Markus König, Paul Simon, Wilder Carrillo‐Cabrera, Amalio Fernández‐Pacheco, Uri Vool, Dieter Suess, Claas Abert, Vladimir M. Fomin, Claire Donnelly   +11 more
wiley   +1 more source

Vertically coupled double quantum dots in magnetic fields

, 1999
Ground-state and excited-state properties of vertically coupled double quantum dots are studied by exact diagonalization. Magic-number total angular momenta that minimize the total energy are found to reflect a crossover between electron configurations ...
A. H. MacDonald, B. Meurer, C. G. Darwin, D. G. Austing, D. Weinmann, D. Yoshioka, G. S. Boebinger, H. Imamura, H. Imamura, H. Imamura, H. Imamura, Hideo Aoki, Hiroshi Imamura, J. A. A. J. Pernboom, J. Eisenstein, J. J. Palacios, K. Cho, K. Moon, L. Brey, M. Eto, M. Stone, M. Wagner, N. F. Johnson, O. Keller, P. A. Maksym, P. A. Maksym, P. A. Maksym, Peter A. Maksym, R. B. Laughlin, R. C. Ashoori, R. C. Ashoori, R. J. Galejs, S. M. Girvin, S. Tarucha, T. Nakajima, T. Nakajima, U. Merkt, V. Fock, W. Kohn, Y. Tanaka, Y. W. Suen   +40 more
core   +1 more source

Massive Graviton Geons [PDF]

, 2018
We find vacuum solutions such that massive gravitons are confined in a local spacetime region by their gravitational energy in asymptotically flat spacetimes in the context of the bigravity theory.
Aoki, Katsuki, Maeda, Kei-ichi, Misonoh, Yosuke, Okawa, Hirotada   +3 more
core   +2 more sources

Large Anomalous and Topological Hall Effect and Nernst Effect in a Dirac Kagome Magnet Fe3Ge

Advanced Functional Materials, EarlyView.
Fe3Ge, a Kagome‐lattice magnet, exhibits remarkable anomalous Hall and Nernst effects, with transverse thermoelectric conductivity surpassing or comaprable to some well‐known ferromagnets. First‐principles calculations attribute these to Berry curvature from massive Dirac gaps. Additionally, topological Hall and Nernst signals emerge from field‐induced
Chunqiang Xu, Shuvankar Gupta, Hengxin Tan, Hyeonhu Bae, Olajumoke Oluwatobiloba Emmanuel, Mingyu Xu, Yan Wu, Xiaofeng Xu, Pengpeng Zhang, Weiwei Xie, Binghai Yan, Xianglin Ke   +11 more
wiley   +1 more source

Heavy mesons mass spectroscopy under a spin-dependent Cornell potential within the framework of the spinless Salpeter equation

Open Physics
The energy bound-state solutions of the spinless Salpeter equation (SSE) have been obtained under a spin-dependent Cornell potential function via the Wentzel–Kramers–Brillouin approximation.
Jahanshir Arezu, Omugbe Ekwevugbe, Aniezi Joseph Ngene, Njoku Ifeanyi Jude, Onate Clement Atachegbe, Eyube Edwin Samson, Ogundeji Samuel Olugbade, Mbamara Chinonso, Obodo Raphael Mmaduka, Onyeaju Michael Chukwudi   +9 more
doaj   +1 more source

Distortion of Wigner molecules : pair function approach

, 2008
We considered a two dimensional three electron quantum dot in a magnetic field in the Wigner limit. A unitary coordinate transformation decouples the Hamiltonian (with Coulomb interaction between the electrons included) into a sum of three independent ...
Bersuker I B, Jacak L, Laughlin R B, M Taut, Maksym P A, Pfannkuche D, Taut M, Taut M, Taut M, Yannouleas C, Yannouleas C   +10 more
core   +1 more source