Time-Reversal-Symmetry-Broken Quantum Spin Hall Effect
... almost fully spin-up polarized and state B spin-down polarized. Therefore, in the C ¼ 1 region there exist two counterpropagating edge states with opposite spin polarizations on a sample edge, which give rise to no net charge transfer but contribute to a net transport of spin. The characteristic o ...
... almost fully spin-up polarized and state B spin-down polarized. Therefore, in the C ¼ 1 region there exist two counterpropagating edge states with opposite spin polarizations on a sample edge, which give rise to no net charge transfer but contribute to a net transport of spin. The characteristic o ...
11 Two and many electron atoms - FU Berlin
... state (1s)(2s) is metastable, since relaxation to (1s)2 is not possible upon light emission (intercombination lines are forbidden). Excitation of triplet states is possible upon collisions of atoms, spin-orbit coupling (which is very weak for helium) and magnetic dipole transitions. Interaction with ...
... state (1s)(2s) is metastable, since relaxation to (1s)2 is not possible upon light emission (intercombination lines are forbidden). Excitation of triplet states is possible upon collisions of atoms, spin-orbit coupling (which is very weak for helium) and magnetic dipole transitions. Interaction with ...
Quantum defect theory description of weakly bound levels and Feshbach...
... scattering wave function requires propagation out to such long distances. In this respect, multichannel quantum defect theory (MQDT) can be an efficient alternative. MQDT was born in atomic physics long ago, as a highly successful theory to explain the spectra of autoionizing states in complex atoms ...
... scattering wave function requires propagation out to such long distances. In this respect, multichannel quantum defect theory (MQDT) can be an efficient alternative. MQDT was born in atomic physics long ago, as a highly successful theory to explain the spectra of autoionizing states in complex atoms ...
PDF only - at www.arxiv.org.
... chamber was filled with clean nitrogen and then re-evacuated. We found that this process had reduced the measureable DC Stark effect to -3.5×10-18. To complete the full evaluation of the DC Stark effect, we have performed similar measurements along the horizontal direction and found ...
... chamber was filled with clean nitrogen and then re-evacuated. We found that this process had reduced the measureable DC Stark effect to -3.5×10-18. To complete the full evaluation of the DC Stark effect, we have performed similar measurements along the horizontal direction and found ...
99, 110403 (2007).
... One of the main aspects of spin dynamics in bulk condensed matter systems is the Dyakonov-Perel spin relaxation [9]. This mechanism involves random elastic scattering of electrons off of impurities. These scatterings lead to spin relaxation, which is a result of spin precession around a randomly ori ...
... One of the main aspects of spin dynamics in bulk condensed matter systems is the Dyakonov-Perel spin relaxation [9]. This mechanism involves random elastic scattering of electrons off of impurities. These scatterings lead to spin relaxation, which is a result of spin precession around a randomly ori ...
Low-frequency conductivity of a nondegenerate two-dimensional electron liquid
... The question of observing the actual dynamics or electron scattering in the electron liquid has not been addressed previously. From analogy with single-electron scattering one may expect that an insight into this dynamics can be gained from the frequency dependence of xx ( ). Here, we develop an ...
... The question of observing the actual dynamics or electron scattering in the electron liquid has not been addressed previously. From analogy with single-electron scattering one may expect that an insight into this dynamics can be gained from the frequency dependence of xx ( ). Here, we develop an ...
Cooling and Trapping Neutral Atoms—W. Ketterle, D.E. Pritchard
... 5. Formation Time of a Fermion Pair Condensate Atomic Fermi gases close to a Feshbach resonance can explore the entire regime from weak coupling to strong interaction between the particles. When cooled below a critical temperature, fermions form bosonic pairs which can condense into the ground state ...
... 5. Formation Time of a Fermion Pair Condensate Atomic Fermi gases close to a Feshbach resonance can explore the entire regime from weak coupling to strong interaction between the particles. When cooled below a critical temperature, fermions form bosonic pairs which can condense into the ground state ...
Electronic Transport in One-Dimensional - Goldhaber
... triplet (t) energy levels as a function of magnetic field in the configurations corresponding to 5a and 5b respectively. Double-headed arrows indicate transitions seen in our data, (e) Peak positions in 5a obtained by fitting two Lorentzians, corresponding to the transition shown in 5c. The lines ar ...
... triplet (t) energy levels as a function of magnetic field in the configurations corresponding to 5a and 5b respectively. Double-headed arrows indicate transitions seen in our data, (e) Peak positions in 5a obtained by fitting two Lorentzians, corresponding to the transition shown in 5c. The lines ar ...
Description of the Physics Programs
... The previous curriculum for physics involved a more quantitative approach to the subject than the present one in certain subject areas. For instance, thermodynamics (including the ideal gas law) is only discussed qualitatively in the present curriculum. In the previous curriculum, students were requ ...
... The previous curriculum for physics involved a more quantitative approach to the subject than the present one in certain subject areas. For instance, thermodynamics (including the ideal gas law) is only discussed qualitatively in the present curriculum. In the previous curriculum, students were requ ...
PDF
... communication, are performed by applying external classical electromagnetic fields, make use of Rabi flopping. So far, successful attempts for quantum bit operations and toy model quantum computations have been done by nuclear magnetic resonance, ion traps and two levels systems using Josephson junc ...
... communication, are performed by applying external classical electromagnetic fields, make use of Rabi flopping. So far, successful attempts for quantum bit operations and toy model quantum computations have been done by nuclear magnetic resonance, ion traps and two levels systems using Josephson junc ...
Phys. Rev. Lett. 110, 156402 - Institute for Quantum Optics and
... where D0 =2 ’ 2:88 GHz is the zero field splitting, gs ’ 2, B is the Bohr magneton, and dk (d? ) is the ground state electric dipole moment in the direction parallel (perpendicular) to the NV axis [20,21]. Motion of the diamond nanoresonator changes the local strain at the position of the NV cente ...
... where D0 =2 ’ 2:88 GHz is the zero field splitting, gs ’ 2, B is the Bohr magneton, and dk (d? ) is the ground state electric dipole moment in the direction parallel (perpendicular) to the NV axis [20,21]. Motion of the diamond nanoresonator changes the local strain at the position of the NV cente ...
Chapter 4: Imperfections in Solids Imperfections in Solids
... •It is important to have a knowledge about the types of imperfections that exist and the roles they play in affecting the behavior of materials. •The mechanical properties of pure metals experience significant changes when alloyed (i.e., when impurity atoms are added) —for example, brass (70% copper ...
... •It is important to have a knowledge about the types of imperfections that exist and the roles they play in affecting the behavior of materials. •The mechanical properties of pure metals experience significant changes when alloyed (i.e., when impurity atoms are added) —for example, brass (70% copper ...
3 He - Jlab Hall-A
... range, and the blue band shows the expected systematic uncertainty. The vertical axis has been normalized to the neutron value at the real photon point (233.2 mb). ...
... range, and the blue band shows the expected systematic uncertainty. The vertical axis has been normalized to the neutron value at the real photon point (233.2 mb). ...
UNIT IV
... seed crystal. In this process, solid polycrystalline semiconducting material is taken in a quartz chamber and heated by using RF power source, till it melts. Then the temperature is lowered to just above the melting point of Ge. At this stage, properly oriented single crystal of Ge, attached to a pu ...
... seed crystal. In this process, solid polycrystalline semiconducting material is taken in a quartz chamber and heated by using RF power source, till it melts. Then the temperature is lowered to just above the melting point of Ge. At this stage, properly oriented single crystal of Ge, attached to a pu ...
Course Descriptions
... semiconductor optoelectronic devices: optical properties of semiconductors, optical gain and absorption, wave guiding, laser oscillation in semiconductors; LEDs, physics of detectors, applications. Prerequisite: EE 3310 or equivalent. (3-0) R MSEN 6321 (EEMF 6321) Active Semiconductor Devices (3 se ...
... semiconductor optoelectronic devices: optical properties of semiconductors, optical gain and absorption, wave guiding, laser oscillation in semiconductors; LEDs, physics of detectors, applications. Prerequisite: EE 3310 or equivalent. (3-0) R MSEN 6321 (EEMF 6321) Active Semiconductor Devices (3 se ...
- JPS Journals
... This approximation results in a self consistent set of equations for the local Greens functions of the Fermi and Bose fields, which can in turn be formulated in terms of a QIM6,19) once a basis set is prescribed. The algorithm delivers the local part of the Greens function, Gloc , and the local part ...
... This approximation results in a self consistent set of equations for the local Greens functions of the Fermi and Bose fields, which can in turn be formulated in terms of a QIM6,19) once a basis set is prescribed. The algorithm delivers the local part of the Greens function, Gloc , and the local part ...
98, 010506 (2007)
... where c 1 i 2 . This operator can be written as a 2 2 matrix in the space of j0i and cy j0i. Likewise, for four vortices 1 , 2 , 3 , and 4 , the unitary braiding operators can be written as 4 4 matrices in the space of j0i, cy1 j0i, cy2 j0i, and cy1 cy2 j0i, where cy1 1 i 2 , and c ...
... where c 1 i 2 . This operator can be written as a 2 2 matrix in the space of j0i and cy j0i. Likewise, for four vortices 1 , 2 , 3 , and 4 , the unitary braiding operators can be written as 4 4 matrices in the space of j0i, cy1 j0i, cy2 j0i, and cy1 cy2 j0i, where cy1 1 i 2 , and c ...
Ferromagnetism
Not to be confused with Ferrimagnetism; for an overview see Magnetism.Ferromagnetism is the basic mechanism by which certain materials (such as iron) form permanent magnets, or are attracted to magnets. In physics, several different types of magnetism are distinguished. Ferromagnetism (including ferrimagnetism) is the strongest type: it is the only one that typically creates forces strong enough to be felt, and is responsible for the common phenomena of magnetism in magnets encountered in everyday life. Substances respond weakly to magnetic fields with three other types of magnetism, paramagnetism, diamagnetism, and antiferromagnetism, but the forces are usually so weak that they can only be detected by sensitive instruments in a laboratory. An everyday example of ferromagnetism is a refrigerator magnet used to hold notes on a refrigerator door. The attraction between a magnet and ferromagnetic material is ""the quality of magnetism first apparent to the ancient world, and to us today"".Permanent magnets (materials that can be magnetized by an external magnetic field and remain magnetized after the external field is removed) are either ferromagnetic or ferrimagnetic, as are other materials that are noticeably attracted to them. Only a few substances are ferromagnetic. The common ones are iron, nickel, cobalt and most of their alloys, some compounds of rare earth metals, and a few naturally-occurring minerals such as lodestone.Ferromagnetism is very important in industry and modern technology, and is the basis for many electrical and electromechanical devices such as electromagnets, electric motors, generators, transformers, and magnetic storage such as tape recorders, and hard disks.