Antiphase Stripe Order as the Origin of Electron Pockets Observed in 1/8-Hole-Doped Cuprates

Recent quantum oscillation measurements on underdoped cuprates are shown to be consistent with the predictions of a mean field theory of the 1/8 magnetic antiphase stripe order proposed to occur in high-$T_c$ cuprates. In particular, for intermediate values of the stripe order parameter, the magneto-transport is found to be dominated by an electron pocket

A Sociolinguistic Study of Taboo in Alas Purwo Banyuwangi

Key words: sociolinguistic, taboo, folklore, social mental structure Language can be the most powerful attribute to define the mental structure of the people in particular group. Taboo is one of the social phenomena that can be used as an object of the study in sociolinguistic field. Taboo consists of normative rules that are transferred orally through generations without any specific rational. The appeareance of these taboo rules in society are accepted by the society as their local belief in communicating with others. In order to find the relationship between social mental structure and taboo rules, oral tradition as the device to transfer the information must be examined. The oral tradition as the social behaviour that havethe same characteristics with the taboo rules appear as the form of language that can also define the social mental structure. Based on those backgrounds, the writer is interested in analyzing the existence of taboo rules in Banyuwangi society especially in Alas Purwo which is touted as one of the most superstisious society in Banyuwangi area. The focus of the study attempts to find answers of this following problems of study: (1) What kind of taboo are believed in Alas Purwo Banyuwangi, (2) What are the meanings of the taboo in Alas Purwo Banyuwangi, (3) What are the types of folklore for each of the taboo in Alas Purwo? In the study, the writer uses Keith and Burridge (2006) categorization related to thefunction and the impact of breaking the rules. The writer also uses Danandjaja\u27s (1982) categorization of folklore. The result of the study shows that there are 4 fatal taboos, 1 exploiting taboo, 1Uncleanliness taboo, and 9 less serious taboo. From those taboos, there are two types of folklore that namely Myth and Legend. There are 10 myths and 3 legends in Alas Purwo. This result proves that eventhough the development of technology and information has grown fast in Banyuwangi area, the societ y\u27s subconscious mind still cannot accept the modernity principles in their life which demands eliminating the traditional beliefs which are full of superstition and myths. The writer suggest the study of taboo in Banyuwangi area be developed by the nextresearcher by tracking the existence of the characters like Werjo and Minak Jinggo with the historical data taken

Orbital and Spin Excitations in Cobalt Oxide

By means of neutron scattering we have determined new branches of magnetic excitations in orbitally active CoO (TN=290 K) up to 15 THz and for temperatures from 6 K to 450 K. Data were taken in the (111) direction in six single-crystal zones. From the dependence on temperature and Q we have identified several branches of magnetic excitation. We describe a model for the coupled orbital and spin states of Co2+ subject to a crystal field and tetragonal distortion.Comment: To be published in Physica B (Proceedings of SCES07 conference in Houston

Magnetic excitations of spin and orbital moments in cobalt oxide

Magnetic and phonon excitations in the antiferromagnet CoO with an unquenched orbital angular momentum are studied by neutron scattering. Results of energy scans in several Brillouin zones in the (HHL) plane for energy transfers up to 16 THz are presented. The measurements were performed in the antiferromagnetic ordered state at 6 K (well below TN~290 K) as well as in the paramagnetic state at 450 K. Several magnetic excitation modes are identified from the dependence of their intensity on wavevector and temperature. Within a Hund's rule model the excitations correspond to fluctuations of coupled orbital and spin degrees of freedom whose bandwidth is controlled by interionic superexchange. The different ordering domains give rise to several magnetic peaks at each wavevector transfer.Comment: Accepted for publication in Canadian Journal of Physic

Internet of Things Based Monitoring System of Leaks in Water Supply Networks Using Pressure-Based Model

Leaks in water distribution networks impose several impacts on economy, freshwater resources, water quality, health and safety. Fast leak detection and reparation is a key for lowering its negative impacts and associated costs with conventional detection techniques. This study has been used a pressure-based model to detect leaks events and its coordinates based on pressure and flow measurements. Pressure and flow data for systems that having leaks in their structure were analyzed and compared with data generated from non-leaking systems using EPANET software packages. An extension package of EPANET software (EpanetWaterGen) has been used as it has the advantage of its ability to better simulate leaks. The results show the ability of the model to detect leaks in a small and large water distribution networks with uncertainty level associated with low pressure change. The developed leak detection model utilizes pressure and flow sensors and enables the network managers and administrators to optimally place the sensors in a manner to increase efficiency and optimize cost. The system allows operators to detect leak location and volume of lost water, thus enabling a better and more efficient response to leaks, such that the network managers can address and respond to most urgent leaks and optimize the time end efforts of technical and maintenance personnel

Internet of Things Based Monitoring System of Leaks in Water Supply Networks Using Pressure-Based Model

Leaks in water distribution networks impose several impacts on economy, freshwater resources, water quality, health and safety. Fast leak detection and reparation is a key for lowering its negative impacts and associated costs with conventional detection techniques. This study has been used a pressure-based model to detect leaks events and its coordinates based on pressure and flow measurements. Pressure and flow data for systems that having leaks in their structure were analyzed and compared with data generated from non-leaking systems using EPANET software packages. An extension package of EPANET software (EpanetWaterGen) has been used as it has the advantage of its ability to better simulate leaks. The results show the ability of the model to detect leaks in a small and large water distribution networks with uncertainty level associated with low pressure change. The developed leak detection model utilizes pressure and flow sensors and enables the network managers and administrators to optimally place the sensors in a manner to increase efficiency and optimize cost. The system allows operators to detect leak location and volume of lost water, thus enabling a better and more efficient response to leaks, such that the network managers can address and respond to most urgent leaks and optimize the time end efforts of technical and maintenance personnel

First-order melting of a weak spin-orbit Mott insulator into a correlated metal

The electronic phase diagram of the weak spin-orbit Mott insulator (Sr(1-x)Lax)3Ir2O7 is determined via an exhaustive experimental study. Upon doping electrons via La substitution, an immediate collapse in resistivity occurs along with a narrow regime of nanoscale phase separation comprised of antiferromagnetic, insulating regions and paramagnetic, metallic puddles persisting until x~0.04. Continued electron doping results in an abrupt, first-order phase boundary where the Neel state is suppressed and a homogenous, correlated, metallic state appears with an enhanced spin susceptibility and local moments. As the metallic state is stabilized, a weak structural distortion develops and suggests a competing instability with the parent spin-orbit Mott state.Comment: 5 pages, 4 figure

Neutron Scattering Study of URu2−x_{2-x}Rex_xSi2_2 with xx = 0.10: Driving Order towards Quantum Criticality

We report inelastic neutron scattering measurements in the hidden order state of URu$_{2-x}$Re$_x$Si$_2$ with $x$ = 0.10. We observe that towards the ferromagnetic quantum critical point induced by the negative chemical pressure of Re-doping, the gapped incommensurate fluctuations are robust and comparable in intensity to the parent material. As the Re doping moves the system toward the quantum critical point, the commensurate spin fluctuations related to hidden order weaken, display a shortened lifetime and slow down. Halfway to the quantum critical point, the hidden order phase survives, albeit weakened, in contrast to its destruction by hydrostatic pressure and by positive chemical pressure from Rh-doping.Comment: 5 pages, 6 figures, 24 reference