Zobrazeno 1 - 10
of 398
pro vyhledávání: '"Loloee, R."'
Autor:
Byeon, H., Nasyedkin, K., Lane, J. R., Beysengulov, N. R., Zhang, L., Loloee, R., Pollanen, J.
Publikováno v:
Nature Communications 12, 4150 (2021)
Piezoelectric surface acoustic waves (SAWs) are powerful for investigating and controlling elementary and collective excitations in condensed matter. In semiconductor two-dimensional electron systems SAWs have been used to reveal the spatial and temp
Externí odkaz:
http://arxiv.org/abs/2008.02330
Autor:
Byeon, H., Nasyedkin, K., Lane, J. R., Zhang, L., Beysengulov, N. R., Loloee, R., Pollanen, J.
Publikováno v:
Journal of Low Temperature Physics (2018). https://doi.org/10.1007/s10909-018-02115-0
We report on the observation of an anomalously high attenuation of high frequency surface acoustic waves by thin films of liquid $^{4}$He. The piezoelectric acoustic waves propagate along the surface of a lithium niobate substrate, which is coated wi
Externí odkaz:
http://arxiv.org/abs/1807.10808
Autor:
Nasyedkin, K., Byeon, H., Zhang, L., Beysengulov, N. R., Milem, J., Hemmerle, S., Loloee, R., Pollanen, J.
Publikováno v:
Journal of Physics: Condensed Matter 30, 465501 (2018)
We report on an unconventional $macroscopic$ field effect transistor composed of electrons floating above the surface of superfluid helium. With this device unique transport regimes are realized in which the charge density of the electron layer can b
Externí odkaz:
http://arxiv.org/abs/1807.04828
Autor:
Niedzielski, Bethany M., Bertus, T. J., Glick, Joseph A., Loloee, R., Pratt, Jr., W. P., Birge, Norman O.
Publikováno v:
Phys. Rev. B 97, 024517 (2018)
Josephson junctions containing two ferromagnetic layers are being considered for use in cryogenic memory. Our group recently demonstrated that the ground-state phase difference across such a junction with carefully chosen layer thicknesses could be c
Externí odkaz:
http://arxiv.org/abs/1709.04815
We have measured spin-triplet supercurrent in Josephson junctions of the form S/F'/F/F'/S, where S is superconducting Nb, F' is a thin Ni layer with in-plane magnetization, and F is a Ni/[Co/Ni]n multilayer with out-of-plane magnetization. The superc
Externí odkaz:
http://arxiv.org/abs/1208.3118
Autor:
Nguyen, H. Y. T., Acharyya, R., Huey, E., Richard, B., Loloee, R., Pratt Jr., W. P., Bass, J., Wang, Shuai, Xia, Ke
Current-perpendicular-to-plane magnetoresistance (CPP-MR) measurements let us quantify conduction electron scattering and spin-flipping at a sputtered ferromagnetic/ferromagnetic (F1/F2 = Co/Ni) interface, with important consequences for CPP-MR and s
Externí odkaz:
http://arxiv.org/abs/1012.4388
We describe a technique, using the current-perpendicular-to-plane (CPP) geometry, to measure the parameter delta(F/N), characterizing flipping of electron spins at a ferromagnetic/non-magnetic (F/N) metallic interface. The technique involves measurin
Externí odkaz:
http://arxiv.org/abs/0912.4515
Publikováno v:
Phys. Rev. B 80, 174515 (2009)
Weakly ferromagnetic alloys are being used by several groups in the study of superconducting/ferromagnetic hybrid systems. Because spin-flip and spin-orbit scattering in such alloys disrupt the penetration of pair correlations into the ferromagnetic
Externí odkaz:
http://arxiv.org/abs/0908.4375
From measurements of the current-perpendicular-to-plane (CPP) total specific resistance (AR = area times resistance) of sputtered Pd/Ir multilayers, we derive the interface specific resistance, 2AR(Pd/Ir) = 1.02 +/- 0.06 fOhmm^2, for this metal pair
Externí odkaz:
http://arxiv.org/abs/0812.4421
Autor:
Fowler, Q., Richard, B., Sharma, A., Theodoropoulou, N., Loloee, R., Pratt Jr., W. P., Bass, J.
We use current-perpendicular-to-plane (CPP) exchange-biased spin-valves to directly measure spin diffusion lengths lsf for N = Cu(2.1 at.%Ge) and Ag(3.6 at.%Sn) alloys. We find lsf(Cu2%Ge)) = 117+10-6 nm and lsf(Ag4%Sn)= 39 +/- 3 nm. The good agreeme
Externí odkaz:
http://arxiv.org/abs/0809.2250