R. Hesper

An SIS-based sideband-separating heterodyne mixer optimized for the 600 to 720 GHz band (2008)

Mena, F. P., Kooi, J. W., Baryshev, A. M., Lodewijk, C. F. J., Hesper, R., Wild, W., ...

The Atacama Large Millimeter Array (ALMA) is the largest radio astronomical enterprise ever proposed. When completed, each of its 64 constituting radio-telescopes will be able to hold 10 heterodyne...

An SIS-based sideband-separating heterodyne mixer optimized for the 600 to 720 GHz band (2008)

Mena, F.P., Kooi, J.W., Baryshev, A.M., Lodewijk, C.F.J., Hesper, R., Wild, W., ...

Optical design and verification of the sub-millimeter limb sounder TELIS (2007)

Yagoubov, P.A., Lange De, G., Baryshev, A.M., Hesper, R., Koshelets, V.P., Wagner, Georg, ...

Study of magnetism using circularly polarized soft X-rays (1998)

Brookes, N.B., Sinkovic, B., Tjeng, L.H., Goedkoop, J.B., Hesper, R., Pellegrin, E., ...

It hes recently been shown that spin-resolved valence band photoemission spectra can be obtained from macroscopically non-magnetic transition metal materials. This is achieved by combining circularly...

Local Electronic and Magnetic Structure of Ni below and above TC: A Spin-Resolved Circularly Polarized Resonant Photoemission Study (1997)

Sinkovic, B., Tjeng, L.H., Brookes, N.B., Goedkoop, J.B., Hesper, R., Pellegrin, E., ...

We report the measurement of the local Ni 3d spin polarization, not only below but also above the Curie temperature (TC), using the newly developed spin-resolved circularly polarized 2p (L3) resonant...

Spin-Resolved Photoemission on Anti-Ferromagnets: Direct Observation of Zhang-Rice Singlets in CuO (1997)

Tjeng, L.H., Sinkovic, B., Brookes, N.B., Goedkoop, J.B., Hesper, R., Pellegrin, E., ...

We demonstrate that it is possible to obtain spin-resolved valence band spectra with a very high degree of spin polarization from antiferromagnetic transition metal materials if the excitation light...

Soft x-ray magnetic circular dichroism study of the colossal magnetoresistance compound La1-xSrxMnO3 (1997)

Pellegrin, E., Tjeng, L.H., Hesper, R., Sawatzky, G.A., Moritomo, Y., ...

Soft X-ray magnetic circular dichroism (SXMCD) measurements are reported on the O K- and Mn L-absorption edges of La1-x Srx MnO3 (x = 0.15, 0.18, and 0.4) single crystals in their ferromagnetic...

Development of the Electronic Structure in a K-Doped C60 Monolayer on a Ag(1 1 1) Surface (1997)

Tjeng, L.H., Hesper, R., Heessels, A.C.L., Heeres, A., Jonkman, H.T., Sawatzky, G.A.

We present an electron spectroscopy study of the development of the electronic structure in the K-doped C60 monolayer on a Ag(1 1 1) surface. We find that the occupation of the lowest unoccupied...