Two-dimensional Spin Ice and the Sixteen-Vertex Model
... advent of artificial spin-ice realisations, we set the parameters of the model in order to reproduce the experimental situation. We show that the sixteen-vertex model gives an accurate description of the thermodynamics of artificial spin-ice samples. Our theoretical results are in quasi-quantitative ...
... advent of artificial spin-ice realisations, we set the parameters of the model in order to reproduce the experimental situation. We show that the sixteen-vertex model gives an accurate description of the thermodynamics of artificial spin-ice samples. Our theoretical results are in quasi-quantitative ...
PHYS 221 Summer 2011 - Midterm Practice
... coils, which loop has the greatest induced emf? a. the square one b. All three would have the same emf induced. c. the circular one d. the rectangular one 67. In the typical household AC voltage of 120 V, what is the peak voltage? a. 120 V b. 85 V c. 240 V d. 170 V 68. If a 9.0 V battery, with negli ...
... coils, which loop has the greatest induced emf? a. the square one b. All three would have the same emf induced. c. the circular one d. the rectangular one 67. In the typical household AC voltage of 120 V, what is the peak voltage? a. 120 V b. 85 V c. 240 V d. 170 V 68. If a 9.0 V battery, with negli ...
Another Look at Gaussian CGS Units
... and as is immediately apparent, CGS allows for the free addition and subtraction of electric and magnetic fields where SI does not, solidifying the notion that they are equivalent fields in all senses of the word as viewed in different frames of reference. In special relativity, because the speed of ...
... and as is immediately apparent, CGS allows for the free addition and subtraction of electric and magnetic fields where SI does not, solidifying the notion that they are equivalent fields in all senses of the word as viewed in different frames of reference. In special relativity, because the speed of ...
Spin density waves in bilayer cold polar molecules
... gases have been extended toward the molecules soil during the past decade. Currently, about fifty research groups are involved in the field of the cold molecules research and more than hundred paper is the annual outcome of the investigation over such crucially growing field [27]. The additional int ...
... gases have been extended toward the molecules soil during the past decade. Currently, about fifty research groups are involved in the field of the cold molecules research and more than hundred paper is the annual outcome of the investigation over such crucially growing field [27]. The additional int ...
Chapter F - Totalizm
... (Copyright © 1994 by Dr Jan Paj_k) Let us visualize a small and perfectly shaped transparent cube which represents a new device for producing a super-powerful magnetic field. It would look like an ideally formed crystal of some transparent mineral, or like a cube cut beautifully from shiny glass and ...
... (Copyright © 1994 by Dr Jan Paj_k) Let us visualize a small and perfectly shaped transparent cube which represents a new device for producing a super-powerful magnetic field. It would look like an ideally formed crystal of some transparent mineral, or like a cube cut beautifully from shiny glass and ...
ZnAl2S4 spinel-type single crystals doped by transition metals ions
... WKHVSHFWUXPFHQWHUHGDWȜ P7KUHHPDLQVSHFWUDOFRPSRQHQWVRIWKHĮ-ZnAI2S4:V IR spectra revealed at low temperatures are caused by electronic transitions of V3+ ions. The coexistence of a broad band with the narrow lines at low temperatures, when the thermal energy kBT is much less than the ...
... WKHVSHFWUXPFHQWHUHGDWȜ P7KUHHPDLQVSHFWUDOFRPSRQHQWVRIWKHĮ-ZnAI2S4:V IR spectra revealed at low temperatures are caused by electronic transitions of V3+ ions. The coexistence of a broad band with the narrow lines at low temperatures, when the thermal energy kBT is much less than the ...
Spin Interactions Between Conduction Electrons and
... polarizations are addressed through the contact hyperfine interaction resulting in the development of a method for high-field optically detected nuclear magnetic resonance sensitive to 108 nuclei. This interaction is then used to generate nuclear spin polarization profiles within a single parabolic ...
... polarizations are addressed through the contact hyperfine interaction resulting in the development of a method for high-field optically detected nuclear magnetic resonance sensitive to 108 nuclei. This interaction is then used to generate nuclear spin polarization profiles within a single parabolic ...
The MEG Made Ridiculously Simple
... In the following, I admit to stealing some nice slides from my office-mate Matti Hamalainen (MSH), for which I thank him. Several other slides were blatantly lifted from various publications and websites, here and there..… Lets face it: parts of this talk are not really “ridiculously simple”; sorry ...
... In the following, I admit to stealing some nice slides from my office-mate Matti Hamalainen (MSH), for which I thank him. Several other slides were blatantly lifted from various publications and websites, here and there..… Lets face it: parts of this talk are not really “ridiculously simple”; sorry ...
Freezing and Melting Transitions under Mesoscalic Confinement
... nucleus has to be formed first. The highest temperature Tn, at which a spherically shaped crystal seed can be nucleated, can be estimated from the condition that, at this temperature, the channel is able to accommodate a nucleus of the critical size.1 The nucleation process is effective at sufficiently ...
... nucleus has to be formed first. The highest temperature Tn, at which a spherically shaped crystal seed can be nucleated, can be estimated from the condition that, at this temperature, the channel is able to accommodate a nucleus of the critical size.1 The nucleation process is effective at sufficiently ...
Partial Molar Entropy and Partial Molar Heat Capacity of Electrons in
... even necessary to know what those interactions are. However, if one has a good microscopic model of the system then it may sometimes be useful to calculate the partial molar quantities of the system based on the properties of the model, including the interactions between the components, and much of ...
... even necessary to know what those interactions are. However, if one has a good microscopic model of the system then it may sometimes be useful to calculate the partial molar quantities of the system based on the properties of the model, including the interactions between the components, and much of ...
Eric Mazur Practice - Interactive Learning Toolkit
... The first step indicating an attractive force on the left and charge magnitudes of opposite sign on the right. Putting in F = 10 N and r = 1 m, k = 9x109 Nm2/C2, the amount of excess charge required is q!"x10-4 C. There are several ways to proceed to estimate the number of water molecules in a human ...
... The first step indicating an attractive force on the left and charge magnitudes of opposite sign on the right. Putting in F = 10 N and r = 1 m, k = 9x109 Nm2/C2, the amount of excess charge required is q!"x10-4 C. There are several ways to proceed to estimate the number of water molecules in a human ...
Electricity and Magnetism - U
... to the electric field; the constant of proportionality is called the conductivity, with the inverse of the conductivity being the resistivity. Ohm’s law gives an equivalent way of expressing this proportionality. We show in detail how the conductivity arises on a molecular level, by considering the d ...
... to the electric field; the constant of proportionality is called the conductivity, with the inverse of the conductivity being the resistivity. Ohm’s law gives an equivalent way of expressing this proportionality. We show in detail how the conductivity arises on a molecular level, by considering the d ...
Superconductivity
Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic fields occurring in certain materials when cooled below a characteristic critical temperature. It was discovered by Dutch physicist Heike Kamerlingh Onnes on April 8, 1911 in Leiden. Like ferromagnetism and atomic spectral lines, superconductivity is a quantum mechanical phenomenon. It is characterized by the Meissner effect, the complete ejection of magnetic field lines from the interior of the superconductor as it transitions into the superconducting state. The occurrence of the Meissner effect indicates that superconductivity cannot be understood simply as the idealization of perfect conductivity in classical physics.The electrical resistivity of a metallic conductor decreases gradually as temperature is lowered. In ordinary conductors, such as copper or silver, this decrease is limited by impurities and other defects. Even near absolute zero, a real sample of a normal conductor shows some resistance. In a superconductor, the resistance drops abruptly to zero when the material is cooled below its critical temperature. An electric current flowing through a loop of superconducting wire can persist indefinitely with no power source.In 1986, it was discovered that some cuprate-perovskite ceramic materials have a critical temperature above 90 K (−183 °C). Such a high transition temperature is theoretically impossible for a conventional superconductor, leading the materials to be termed high-temperature superconductors. Liquid nitrogen boils at 77 K, and superconduction at higher temperatures than this facilitates many experiments and applications that are less practical at lower temperatures.