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Lecture Jeroen van den Brink


29 april 2010 FWN-Building 5113.0202, Nijenborgh 4, 9747 AG, Groningen
Speaker: Prof. Dr. Jeroen van den Brink
Affiliation: Institute for Theoretical Solid State Physics, IFW Dresden, Germany
Title: Elementary excitations probed by resonant inelastic X-ray scattering
Date: Thu Apr 29, 2010
Start: 13.30
Location: FWN-Building 5113.0202
Host: Paul van Loosdrecht
Telephone: +31 50 363 8149


Resonant Inelastic X-ray Scattering (RIXS) provides direct access to elementary charge, spin and orbital excitations in complex oxides. As a technique it has made tremendous progress with the advent high-brilliance synchrotron x-ray sources. The fundamental question that arises is to precisely which low-energy correlation functions RIXS is sensitive. I will show that depending on the experimental RIXS set up, the measured charge dynamics can include charge-transfer, d-d and orbital excitations [1,2]. RIXS also allows probing spin dynamics, in particular magnons and bi-magnons dispersions [3,4]. Based on these observations, I will discuss the novelties that RIXS reveals on the spin dynamics of High Tc cuprates [5].

[1] Van den Brink and Van Veenendaal, EPL 73, 121 (2006).
[2] Forte et al., PRL 101, 106406 (2008).
[3] Braicovich et al., PRL 102, 167401 (2009).
[4] Ament et al., PRL 103, 117003 (2009).
[4] Braicovich et al., PRL 104, 077002 (2010).

Laatst gewijzigd:22 oktober 2012 14:30