Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Cooper, K. B."'
Publikováno v:
Phys. Rev. B 92, 115410 (2015)
Clean two-dimensional electron systems in GaAs/AlGaAs heterostructures exhibit anisotropic collective phases, the quantum Hall nematics, at high Landau level occupancy and low temperatures. An as yet unknown native symmetry-breaking potential consist
Externí odkaz:
http://arxiv.org/abs/1506.08482
Autor:
Martinis, John M., Cooper, K. B., McDermott, R., Steffen, Matthias, Ansmann, Markus, Osborn, K., Cicak, K., Oh, S., Pappas, D. P., Simmonds, R. W., Yu, clare C.
Dielectric loss from two-level states is shown to be a dominant decoherence source in superconducting quantum bits. Depending on the qubit design, dielectric loss from insulating materials or the tunnel junction can lead to short coherence times. We
Externí odkaz:
http://arxiv.org/abs/cond-mat/0507622
Autor:
Cooper, K. B., Steffen, Matthias, McDermott, R., Simmonds, R. W., Oh, Seongshik, Hite, D. A., Pappas, D. P., Martinis, John M.
We have detected coherent quantum oscillations between Josephson phase qubits and microscopic critical-current fluctuators by implementing a new state readout technique that is an order of magnitude faster than previous methods. The period of the osc
Externí odkaz:
http://arxiv.org/abs/cond-mat/0405710
In half-filled high Landau levels, two-dimensional electron systems possess collective phases which exhibit a strongly anisotropic resistivity tensor. A weak, but as yet unknown, rotational symmetry-breaking potential native to the host semiconductor
Externí odkaz:
http://arxiv.org/abs/cond-mat/0309625
Publikováno v:
Phys. Rev. Lett. 90, 226803 (2003)
Recent magnetotransport experiments on high mobility two-dimensional electron systems have revealed many-body electron states unique to high Landau levels. Among these are re-entrant integer quantum Hall states which undergo sharp transitions to cond
Externí odkaz:
http://arxiv.org/abs/cond-mat/0210069
The recently discovered anisotropy of the longitudinal resistance of two-dimensional electrons near half filling of high Landau levels is found to persist to much higher temperatures T when a large in-plane magnetic field B|| is applied. Under these
Externí odkaz:
http://arxiv.org/abs/cond-mat/0203174
The observation of new insulating phases of two-dimensional electrons in the first excited Landau level is reported. These states, which are manifested as re-entrant integer quantized Hall effects, exist alongside well-developed even-denominator frac
Externí odkaz:
http://arxiv.org/abs/cond-mat/0110477
Publikováno v:
Solid State Commun. 119, 89 (2001)
The principal axes of the recently discovered anisotropic phases of 2D electron systems at high Landau level occupancy are consistently oriented relative to the crystal axes of the host semiconductor. The nature of the native rotational symmetry brea
Externí odkaz:
http://arxiv.org/abs/cond-mat/0104243
A brief summary of the emerging evidence for a new class of collective states of two-dimensional electrons in partially occupied excited Landau levels is presented. Among the most dramatic phenomena described are the large anisotropies of the resisti
Externí odkaz:
http://arxiv.org/abs/cond-mat/0003405
Autor:
McDermott, R., Simmonds, R. W., Steffen, Matthias, Cooper, K. B., Cicak, K., Osborn, K. D., Oh, Seongshik, Pappas, D. P., Martinis, John M.
Publikováno v:
Science, 2005 Feb . 307(5713), 1299-1302.
Externí odkaz:
https://www.jstor.org/stable/3840222
