Zobrazeno 1 - 10
of 1 439
pro vyhledávání: '"Anderson, J. R."'
Publikováno v:
Phys. Rev. Applied 4, 034011 (2015)
We have observed photon-assisted Cooper-pair tunneling in an atomic-scale Josephson junction formed between a superconducting Nb tip and a superconducting Nb sample in a scanning tunneling microscope (STM) at 30 mK. High-resolution tunneling spectros
Externí odkaz:
http://arxiv.org/abs/1510.06440
This paper describes a simple microwave apparatus to measure the Hall effect in semiconductor wafers. The advantage of this technique is that it does not require contacts on the sample or the use of a resonant cavity. Our method consists of placing t
Externí odkaz:
http://arxiv.org/abs/1509.08799
We report a reproducible technique for the fabrication of sharp superconducting Nb tips for scanning tunneling microscopy (STM) and scanning tunneling spectroscopy. Sections of Nb wire with 250 $\mu$m diameter are dry etched in an SF$_6$ plasma in a
Externí odkaz:
http://arxiv.org/abs/1404.5370
Akademický článek
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Autor:
Roychowdhury, A., Gubrud, M. A., Dana, R., Anderson, J. R., Lobb, C. J., Wellstood, F. C., Dreyer, M.
We describe the design, construction, and performance of an ultra-low temperature, high-field scanning tunneling microscope (STM) with two independent tips. The STM is mounted on a dilution refrigerator and operates at a base temperature of 30 mK wit
Externí odkaz:
http://arxiv.org/abs/1311.1855
Autor:
Podgórni, A., Kilanski, L., Dobrowolski, W., Górska, M., Reszka, A., Domukhovski, V., Kowalski, B. J., Brodowska, B., Anderson, J. R., Butch, N. P., Slynko, V. E., Slynko, E. I.
Publikováno v:
Acta Phys. Pol. A 122, 1012 (2012)
We present the experimental evidence for the presence of spinodal decomposition of the magnetic ions in the Ge/1-x-y/Cr/x/Eu/y/Te samples with chemical composition varying in the range of 0.015 < x < 0.057 and 0.003 < y < 0.042. The ferromagnetic tra
Externí odkaz:
http://arxiv.org/abs/1212.0666
Autor:
Kilanski, L., Podgórni, A., Dobrowolski, W., Górska, M., Kowalski, B. J., Reszka, A., Domukhovski, V., Szczerbakow, A., Szałowski, K., Anderson, J. R., Butch, N. P., Slynko, V. E., Slynko, E. I.
Publikováno v:
J. Appl. Phys. 112, 123909 (2012)
We present the studies of magnetic properties of Ge/1-x/Cr/x/Te diluted magnetic semiconductor with changeable chemical composition 0.016 \leq x \leq 0.061. A spin-glass state (at T \leq 35 K) for x = 0.016 and 0.025 and a ferromagnetic phase (at T <
Externí odkaz:
http://arxiv.org/abs/1203.3044
Autor:
Kim, Z., Vlahacos, C. P., Hoffman, J. E., Grover, J. A., Voigt, K. D., Cooper, B. K., Ballard, C. J., Palmer, B. S., Hafezi, M., Taylor, J. M., Anderson, J. R., Dragt, A. J., Lobb, C. J., Orozco, L. A., Rolston, S. L., Wellstood, F. C.
Publikováno v:
AIP Advances 1, 042107 (2011)
We describe a thin-film superconducting Nb microwave resonator, tunable to within 0.3 ppm of the hyperfine splitting of $^{87}$Rb at $f_{Rb}=6.834683$ GHz. We coarsely tuned the resonator using electron-beam lithography, decreasing the resonance freq
Externí odkaz:
http://arxiv.org/abs/1109.5205