Spin and orbital currents in solids. The latest frontiers in electronics?
friday
1
December
CHAIR: Josep Fontcuberta
08:00
Registration
08:15
Josep Fontcuberta
Welcome and Opening
08:25
Silvia Damerio
Why I do we care now about orbital currents?
Fundamentals
CHAIR: Silvia Damerio
08:30
Aurelien Manchon
A reminder of atomic physics. Spin and orbital momenta. Crystal field and quenching of orbital momentum. Spin-orbit coupling. Time-dependent Schrödinger equation.
10:00
Coffee Break
CHAIR: Gyanendra Singh
10:30
Aurelien Manchon
Band structure, orbitals and Fermi surfaces of simplest 3d-t2g or 3d-eg cases
12:00
Pause
12:15
Enric Canadell
Fermi surfaces and orbital mixing under E-bias. Orbital currents. An insight for newcomers.
12:45
Lunch
CHAIR: Matteo Fettizio
14:00
Dongwook Go
Time dependent evolution of electronic states. (Un)quenching orbital momentum. The ubiquitous orbital currents. Orbital accumulation and flow. Orbital currents in p-Si. Orbital textures in 3d metals (t2g, eg).
15:30
Pause
15:45
Hyun-Woo Lee
Electron hopping and Aharonov-Bohm effect. Orbital currents and Berry phase. Reminder of SHE and the role of SOC. Comparison to OHE. Orbital accumulation and exchange interactions. Can OC create magnetic torque? Relative strength of OHE and SHE in 3d and heavier 4,5d metals. Expectations from theory. Charge-spin and charge-orbital conversion. Definitions and expected values
How to measure orbital currents
CHAIR: Jeanine Gückelhorn
16:45
Can Avci
Orbital and magnetic torques, Hall-like transport measurements and beyond. Discriminating OT from ST.
17:30
Hyun-Woo Lee
Spin and orbital pumping using ferromagnetic resonance; MOKE and THz emission
