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... The second major component of this thesis describes a new scheme to realize the Harper Hamiltonian. The Harper Hamiltonian is a model system which effectively describes electrons in a solid immersed in a very high magnetic field. The effective magnetic field manifests itself as a position-dependent ...
... The second major component of this thesis describes a new scheme to realize the Harper Hamiltonian. The Harper Hamiltonian is a model system which effectively describes electrons in a solid immersed in a very high magnetic field. The effective magnetic field manifests itself as a position-dependent ...
Atom interferometry in a 10 m fountain
... Plants, Space Odysseyers, Palmertons, and other Roommatesn ). Finally, I thank my parents, grandparents, and other family for their years of support. I didn’t realize until partway through graduate school how many similarities there are between my research and that of both of my parents, as evidence ...
... Plants, Space Odysseyers, Palmertons, and other Roommatesn ). Finally, I thank my parents, grandparents, and other family for their years of support. I didn’t realize until partway through graduate school how many similarities there are between my research and that of both of my parents, as evidence ...
Optical properties of carbon based materials in high
... The aim of the present work is to investigate the properties of these systems in high magnetic fields. In experimental physics several methods and effects can be used to characterise the properties of electrons in solids in a magnetic field, for example like Shubnikov-De Haas and De-Haas-Van-Alphen osc ...
... The aim of the present work is to investigate the properties of these systems in high magnetic fields. In experimental physics several methods and effects can be used to characterise the properties of electrons in solids in a magnetic field, for example like Shubnikov-De Haas and De-Haas-Van-Alphen osc ...
Chirped-Pulse Millimeter-Wave Spectroscopy, Dynamics, and
... The chirped-pulse millimeter-wave (CPmmW) technique is applied to transitions between Rydberg states, and calcium atoms are used as the initial test system. The unique feature of Rydberg–Rydberg transitions is that they have enormous electric dipole transition moments: ∼5 kiloDebye at n∗ ∼ 45, where ...
... The chirped-pulse millimeter-wave (CPmmW) technique is applied to transitions between Rydberg states, and calcium atoms are used as the initial test system. The unique feature of Rydberg–Rydberg transitions is that they have enormous electric dipole transition moments: ∼5 kiloDebye at n∗ ∼ 45, where ...
Fine structure in d − f and f - Fachbereich Physik
... laser, and supplementary techniques. The iso-structural LiSrAlF6 (LiSAF) compounds have been obtained by solid state reaction. However, the doping concentrations of the Tm3+ and Mn2+ doped LiCAF and LiSAF compounds are surprisingly low (of the order 0.01%), being close to the detection limit of the ...
... laser, and supplementary techniques. The iso-structural LiSrAlF6 (LiSAF) compounds have been obtained by solid state reaction. However, the doping concentrations of the Tm3+ and Mn2+ doped LiCAF and LiSAF compounds are surprisingly low (of the order 0.01%), being close to the detection limit of the ...
Influence of chemical substitutions and the oxygen content on
... state parameters of RE123. The intrinsic and extrinsic superconducting state parameters were determined from magnetization measurements and by applying the effective media approach scaling method. Torque magnetometry was employed to study the anisotropy of the superconducting state parameters, γ. Th ...
... state parameters of RE123. The intrinsic and extrinsic superconducting state parameters were determined from magnetization measurements and by applying the effective media approach scaling method. Torque magnetometry was employed to study the anisotropy of the superconducting state parameters, γ. Th ...
Central region study for a moderate energy cyclotron
... single turn extraction was obtained. The relative energy spread of the extracted beam was well below 10-3 • For the measurement of beam properties several diagnostic means are available, as was mentioned before. The construction and use of diagnostic equipment was the subject of extensive studies at ...
... single turn extraction was obtained. The relative energy spread of the extracted beam was well below 10-3 • For the measurement of beam properties several diagnostic means are available, as was mentioned before. The construction and use of diagnostic equipment was the subject of extensive studies at ...
Microscopy of 2D Fermi Gases - Institut für Laserphysik
... The first degenerate atomic Fermi gas was created just before the turn of the century [1], followed by the realization of a molecular BEC of bosonic dimers formed from fermionic atoms [2–4]. This seminal achievement signalled the advent of research on strongly interacting fermionic model systems, br ...
... The first degenerate atomic Fermi gas was created just before the turn of the century [1], followed by the realization of a molecular BEC of bosonic dimers formed from fermionic atoms [2–4]. This seminal achievement signalled the advent of research on strongly interacting fermionic model systems, br ...
NbS3: A unique quasi-one-dimensional conductor with three charge
... transition occurs at a much higher temperature TP0 ≈ 620 − 650 K; evidence for the nonlinear conductivity of this CDW is presented. (2) We show that the CDW associated with the TP2 transition arises from S vacancies acting as donors. Such a CDW transition has not been observed before. (3) We demonst ...
... transition occurs at a much higher temperature TP0 ≈ 620 − 650 K; evidence for the nonlinear conductivity of this CDW is presented. (2) We show that the CDW associated with the TP2 transition arises from S vacancies acting as donors. Such a CDW transition has not been observed before. (3) We demonst ...
Program Abstracts
... Since the sixties biennial Symposium on Spin Waves in St. Petersburg was aimed at providing an opportunity for discussion of the latest advances in fundamental studies of dynamic properties of various magnetically ordered materials. This year the Symposium will highlight the modern problems of magne ...
... Since the sixties biennial Symposium on Spin Waves in St. Petersburg was aimed at providing an opportunity for discussion of the latest advances in fundamental studies of dynamic properties of various magnetically ordered materials. This year the Symposium will highlight the modern problems of magne ...
Precision spectroscopy with - Quantum Optics and Spectroscopy
... events, times for prayers and masses in church, though never reaching the accuracy of modern clocks. The first clock which incorporates an oscillatory device depending on its natural resonance frequency, was the pendulum clock. The original concept had been developed by Galileo Galilei when he disc ...
... events, times for prayers and masses in church, though never reaching the accuracy of modern clocks. The first clock which incorporates an oscillatory device depending on its natural resonance frequency, was the pendulum clock. The original concept had been developed by Galileo Galilei when he disc ...
physics in canada la physique au canada
... Physical Institute of the University of Würzburg (Germany) discovered a new form of radiation, which he called X-rays. Years later, James Chadwick, a professor of physics at Cambridge University discovered the neutron, a neutral particle in the nucleus of an atom. For their discoveries, Röntgen and ...
... Physical Institute of the University of Würzburg (Germany) discovered a new form of radiation, which he called X-rays. Years later, James Chadwick, a professor of physics at Cambridge University discovered the neutron, a neutral particle in the nucleus of an atom. For their discoveries, Röntgen and ...
Colloidal particles on quasicrystalline substrates
... Quasicrystals are non-periodic solids that nevertheless exhibit long-range positional and orientational order. They can possess rotational point symmetries, such as five- or tenfold rotational axes, that are not allowed in periodic crystals. Since their discovery [1] quasicrystals have caused much f ...
... Quasicrystals are non-periodic solids that nevertheless exhibit long-range positional and orientational order. They can possess rotational point symmetries, such as five- or tenfold rotational axes, that are not allowed in periodic crystals. Since their discovery [1] quasicrystals have caused much f ...
Modelling of the Floating Zone Growth of Silicon Single Crystals with
... crystal grower self. It is believed (see e.g. [7]) that a certain kind of disturbance at the growth interface is enough to release the dislocation production by the high thermal stress in the crystal. The disturbance can be a strong local change of temperature and crystallization rate or small exter ...
... crystal grower self. It is believed (see e.g. [7]) that a certain kind of disturbance at the growth interface is enough to release the dislocation production by the high thermal stress in the crystal. The disturbance can be a strong local change of temperature and crystallization rate or small exter ...
Neutron scattering study on R2 PdSi3 (R = Ho, Er, Tm
... and references therein). A few examples are: the strongest known permanent magnet Nd2 Fe14 B (12,90) now widely used in applications; heavy-fermion systems with new electronic states (36,48,60,98,109) such as CeCu2 Si2 (97) ; and the recently discovered iron-based high Tc superconductors RFeAsO1−x F ...
... and references therein). A few examples are: the strongest known permanent magnet Nd2 Fe14 B (12,90) now widely used in applications; heavy-fermion systems with new electronic states (36,48,60,98,109) such as CeCu2 Si2 (97) ; and the recently discovered iron-based high Tc superconductors RFeAsO1−x F ...
Low temperature London penetration depth and superfluid density
... Studying superconductivity is important not only for scientific research but also for applications. Practical implementation of superconductors requires materials with high operational parameters such as superconducting critical temperature (Tc ), upper critical magnetic field (Hc2 ), and critical c ...
... Studying superconductivity is important not only for scientific research but also for applications. Practical implementation of superconductors requires materials with high operational parameters such as superconducting critical temperature (Tc ), upper critical magnetic field (Hc2 ), and critical c ...
SEARCHING for a QCD MIXED PHASE at the NUCLOTRON
... a strongly coupled QGP (sQGP). Results from the energy scan program of the NA49 experiment, however, suggest that the physics of the onset of the hadron-to-quark matter transition should be expected at lower c.m. energies of the colliding heavy-ion systems. Therefore, new experimental programs are b ...
... a strongly coupled QGP (sQGP). Results from the energy scan program of the NA49 experiment, however, suggest that the physics of the onset of the hadron-to-quark matter transition should be expected at lower c.m. energies of the colliding heavy-ion systems. Therefore, new experimental programs are b ...
Properties of Ferroelectric Perovskite Structures under Non
... ferroelectric properties, plus such structural complexity greatly discouraged any further theoretical studies. As a result, the term “ferroelectrics” did not become widely accepted until around 1935, when the first group of ferroelectric crystals, such as potassium dihydrogen phosphate, KH2 PO4 [28– ...
... ferroelectric properties, plus such structural complexity greatly discouraged any further theoretical studies. As a result, the term “ferroelectrics” did not become widely accepted until around 1935, when the first group of ferroelectric crystals, such as potassium dihydrogen phosphate, KH2 PO4 [28– ...
Phase Converter Simulator - UCF EECS
... on whether or not to purchase a product. There are other similar products out on the market that range from $1000 to $10,000. This is why we have decided to create a phase converter simulator that does not consist of any motors or high power supply unit. We are using economical potential transformer ...
... on whether or not to purchase a product. There are other similar products out on the market that range from $1000 to $10,000. This is why we have decided to create a phase converter simulator that does not consist of any motors or high power supply unit. We are using economical potential transformer ...
On Quantum Simulators and Adiabatic Quantum Algorithms
... classical search algorithms and Hallgren’s quantum algorithm [6] for Pell’s equation1 which is exponentially faster than any known classical algorithm. Quantum mechanics, in so far as it is a complete natural theory, describes every physical computing device and, so, even classical computers. Theref ...
... classical search algorithms and Hallgren’s quantum algorithm [6] for Pell’s equation1 which is exponentially faster than any known classical algorithm. Quantum mechanics, in so far as it is a complete natural theory, describes every physical computing device and, so, even classical computers. Theref ...
Terahertz driven intraband dynamics of excitons in nanorods Fredrik Sy
... dot sizes can typically range from 1 to 10 nm which corresponds to as few as several hundred atoms to well over ten thousand atoms [5,9]. One important feature of nanorods, is that when the length is sufficiently large, the energy difference between the excitonic states can be considerably smaller t ...
... dot sizes can typically range from 1 to 10 nm which corresponds to as few as several hundred atoms to well over ten thousand atoms [5,9]. One important feature of nanorods, is that when the length is sufficiently large, the energy difference between the excitonic states can be considerably smaller t ...
ABSTRACT NOVEL TRANSPORT PROPERTIES OF ELECTRON-DOPED SUPERCONDUCTORS Pr
... fluctuation effect in electron-doped cuprates, suggesting a more conventional superconductivity. We measured Nernst effect carefully through the entire range of doping and temperature. A stronger superconducting fluctuation effect is observed in the underdoped region compared to the overdoped region ...
... fluctuation effect in electron-doped cuprates, suggesting a more conventional superconductivity. We measured Nernst effect carefully through the entire range of doping and temperature. A stronger superconducting fluctuation effect is observed in the underdoped region compared to the overdoped region ...
Phase change memory technology
... writes, and to maintain pre-erased blocks in order to finesse or hide the poor write/erase performance[28, 29]. Together with simple overprovisioning of extra capacity, these techniques allow impressive system performance. For instance, the Texas Memory Systems RamSan-500 can write at 2GB/sec with a ...
... writes, and to maintain pre-erased blocks in order to finesse or hide the poor write/erase performance[28, 29]. Together with simple overprovisioning of extra capacity, these techniques allow impressive system performance. For instance, the Texas Memory Systems RamSan-500 can write at 2GB/sec with a ...
Gaussian Beams
... z, although the exact dependence is yet to be determined. If the beam is expanding then its “wavefront” must have a spherical shape. This is because a wave always propagates in a direction perpendicular to its wavefront (e.g., ripples on a pond). The wavefront is defined as the surface that contains ...
... z, although the exact dependence is yet to be determined. If the beam is expanding then its “wavefront” must have a spherical shape. This is because a wave always propagates in a direction perpendicular to its wavefront (e.g., ripples on a pond). The wavefront is defined as the surface that contains ...
Phase transition
A phase transition is the transformation of a thermodynamic system from one phase or state of matter to another one by heat transfer. The term is most commonly used to describe transitions between solid, liquid and gaseous states of matter, and, in rare cases, plasma. A phase of a thermodynamic system and the states of matter have uniform physical properties. During a phase transition of a given medium certain properties of the medium change, often discontinuously, as a result of the change of some external condition, such as temperature, pressure, or others. For example, a liquid may become gas upon heating to the boiling point, resulting in an abrupt change in volume. The measurement of the external conditions at which the transformation occurs is termed the phase transition. Phase transitions are common in nature and used today in many technologies.