B. Suh - Los Alamos National Laboratory

B. Suh
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Name
B. Suh
Affiliation
Los Alamos National Laboratory
Country
United States

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Physics - Strongly Correlated Electrons (6)
 
Physics - Materials Science (1)
 
Physics - Superconductivity (1)
 
Nuclear Experiment (1)
 
Physics - Instrumentation and Detectors (1)
 
High Energy Physics - Experiment (1)
 
Computer Science - Human-Computer Interaction (1)

Publications Authored By B. Suh

In this paper, we propose a new interface for virtual reality headset: a touchpad in front of the headset. To demonstrate the feasibility of the front touch interface, we built a prototype device, explored VR UI design space expansion, and performed various user studies. We started with preliminary tests to see how intuitively and accurately people can interact with the front touchpad. Read More

The COHERENT collaboration's primary objective is to measure coherent elastic neutrino-nucleus scattering (CEvNS) using the unique, high-quality source of tens-of-MeV neutrinos provided by the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL). In spite of its large cross section, the CEvNS process has never been observed, due to tiny energies of the resulting nuclear recoils which are out of reach for standard neutrino detectors. The measurement of CEvNS has now become feasible, thanks to the development of ultra-sensitive technology for rare decay and weakly-interacting massive particle (dark matter) searches. Read More

$^{51}$V NMR studies on CaV2O4 single crystals and $^{17}$O NMR studies on $^{17}$O-enriched powder samples are reported. The temperature dependences of the $^{17}$O NMR line width and nuclear spin-lattice relaxation rate give strong evidence for a long-range antiferromagnetic transition at Tn = 78 K in the powder. Magnetic susceptibility measurements show that Tn = 69 K in the crystals. Read More

Electronic structures of Zn$_{1-x}$Co$_x$O have been investigated using photoemission spectroscopy (PES) and x-ray absorption spectroscopy (XAS). The Co 3d states are found to lie near the top of the O $2p$ valence band, with a peak around $\sim 3$ eV binding energy. The Co $2p$ XAS spectrum provides evidence that the Co ions in Zn$_{1-x}$Co$_{x}$O are in the divalent Co$^{2+}$ ($d^7$) states under the tetrahedral symmetry. Read More

$^{11}$B NMR measurements have been performed in $^{11}$B enriched MgB$_2$ powder samples in external fields of 0.813, 1.55, 4. Read More

1999Nov
Affiliations: 1Los Alamos National Laboratory, 2Los Alamos National Laboratory, 3II. Physikalisches Institut, Universitat zu Köln, Köln, Germany, 4II. Physikalisches Institut, Universitat zu Köln, Köln, Germany, 5II. Physikalisches Institut, Universitat zu Köln, Köln, Germany, 6Laboratoire de Chimie des Solides, Universite Paris-Sud, Orsay, France

We present La and Cu NMR relaxation measurements in single crystal La_{1.67}Eu_{0.2}Sr_{0. Read More

1999Nov
Affiliations: 1Los Alamos National Laboratory, 2Los Alamos National Laboratory, 3Los Alamos National Laboratory, 4II. Physikalisches Institut, Universitat zu Koln, Germany, 5II. Physikalisches Institut, Universitat zu Koln, Germany, 6II. Physikalisches Institut, Universitat zu Koln, Germany, 7Laboratoire de Chimie des Solides, Universite Paris-Sud, Orsay, France

We report Cu and La nuclear magnetic resonance (NMR) measurements in the title compound that reveal an inhomogeneous glassy behavior of the spin dynamics. A low temperature peak in the La spin lattice relaxation rate and the ``wipeout'' of Cu intensity both arise from these slow electronic spin fluctuations that reveal a distribution of activation energies. Inhomogeneous slowing of spin fluctuations appears to be a general feature of doped lanthanum cuprate. Read More

1998Sep
Affiliations: 1Los Alamos National Laboratory, 2Los Alamos National Laboratory, 3Los Alamos National Laboratory, 4NHMFL and Florida State University

Light hole doping of lanthanum cuprate strongly suppresses the onset of antiferromagnetic (AF) order. Surprisingly, it simultaneously suppresses the extrapolated zero temperature sub-lattice magnetization. 139La NQR results in lightly Li-doped lanthanum cuprate have demonstrated that these effects are independent of the details of the mobility of the added holes. Read More

^{139}La nuclear quadrupole resonance measurements in lightly doped La_2Cu_{1-x}Li_xO_4 have been performed to reveal the dependence of the magnetic properties of the antiferromagnetic CuO_2 planes on the character of the doped holes and their interactions with the dopant. A detailed study shows that the magnetic properties are remarkably insensitive to the character of the dopant impurity. This indicates that the added holes form previously unrecognized collective structures. Read More