Name: Spin-Related Phenomena in Mesoscopic Transport
Start: 2012-09-03T08:00:00+02:00
End: 2012-09-28T18:00:00+02:00
Location: Nordita

Monday, 3 September 2012

09:00 Registration
Registration
09:00 - 12:00
Room: 132:028

12:00 Lunch
Lunch
12:00 - 13:00
Room: 132:028

13:00 Welcome and introduction to the programme
Welcome and introduction to the programme
13:00 - 13:30
Room: 132:028
13:30 Introduction to Quantum Magnets - I - Pinaki Sengupta
Introduction to Quantum Magnets - I
- Pinaki Sengupta
13:30 - 15:30
Room: 132:028 A short course on Quantum Magnets.
Tuesday, 4 September 2012
10:00 Introduction to Quantum Magnets - II - Pinaki Sengupta
Introduction to Quantum Magnets - II
- Pinaki Sengupta
10:00 - 12:00
Room: 132:028
12:00 Lunch
Lunch
12:00 - 13:00
Room: 132:028
13:00 Introduction to Quantum Magnets - III - Pinaki Sengupta
Introduction to Quantum Magnets - III
- Pinaki Sengupta
13:00 - 15:00
Room: 132:028
Wednesday, 5 September 2012

12:00 Lunch
Lunch
12:00 - 13:00
Room: 132:028
13:00 Introduction to Quantum Magnets - IV - Pinaki Sengupta
Introduction to Quantum Magnets - IV
- Pinaki Sengupta
13:00 - 15:00
Room: 132:028
Thursday, 6 September 2012
10:00 General aspects of mesoscopic transport - I - Jonathan Bird
General aspects of mesoscopic transport - I
- Jonathan Bird
10:00 - 12:00
Room: 132:028 This broad set of lectures starts from an introductory level and proceeds to the more advanced one. Tentative outline: (A) Density of States 2DEG density of states, Quantum-wire density of states Quantum-dot density of states, Density of states of actual nanostructures, (B) Transmission in Nanostructures I: 1D conductance quantization, Quantum point contacts (QPCs), Electron channels in quantum wires, Quantum-wire conductance, (C) Transmission in Nanostructures II (More on 1D Conductance Quantization): Temperature dependence, Spin & other degeneracies, Si & carbon nanotubes, Energy relaxation in ballistic transport, Quantum contact resistance, Non-linear transport in QPCs, (D) Transmission in Nanostructures III: Disordered quantum wires, Breakdown of 1D conductance quantization, The Landauer formula, The Landauer formula & scaled CMOS.
12:00 Lunch
Lunch
12:00 - 13:00
Room: 132:028
13:00 Spin-orbit interaction in quantum wires - I - Almas Sadreev
Spin-orbit interaction in quantum wires - I
- Almas Sadreev
13:00 - 15:00
Room: 132:028 In this set of lectures basic concepts such as Rashba and Dresselhaus spin-orbit interactions will be described. The example of In doped GaAs 2DEG structures will be discussed, how to solve the problem of electron transmission in electronic devices based on these structures, spin-polarized transmission in curvilinear wires and spin evolution for the process of transmission, and finally about ac effects. In a more detailed part of the lectures we consider electron transmission in 1d quantum wire with the Rashba spin-orbit interaction(SOI). The wire is subjected by dc and ac potentials of finger gate that results in local time-periodic Rashba SOI. We calculate the conductance of the 1d wire as dependent on incident energy, frequency of ac potential and a value of dc potential. A conductance, spin polarization and spin flip transmission are calculated as dependent on external constant magnetic field, the ac frequency and energy of incident electrons which show an analog of electron spin resonance for dynamical Rashba SOI.
15:00 General aspects of mesoscopic transport - II - Jonathan Bird
General aspects of mesoscopic transport - II
- Jonathan Bird
15:00 - 17:00
Room: 132:028
Friday, 7 September 2012
10:00 Spin-orbit interaction in quantum wires - II - Almas Sadreev
Spin-orbit interaction in quantum wires - II
- Almas Sadreev
10:00 - 12:00
Room: 132:028
12:00 Lunch
Lunch
12:00 - 13:00
Room: 132:028
13:00 General aspects of mesoscopic transport - III - Jonathan Bird
General aspects of mesoscopic transport - III
- Jonathan Bird
13:00 - 15:00
Room: 132:028
15:00 Electronic transport across a helical edge state exposed to a uniform magnetic field - Abhiram Soori
Electronic transport across a helical edge state exposed to a uniform magnetic field
- Abhiram Soori
15:00 - 16:00
Room: 132:028 We study electronic transport across a helical edge state exposed to a uniform magnetic field over a finite length. We show that this system exhibits Fabry-Pérot type resonances in electronic transport. The intrinsic spin anisotropy of the helical edge states allows us to tune these resonances by changing the direction of the magnetic field while keeping its magnitude constant. These resonances provide a unique way to probe the helical nature of the theory. We also study the effect of a static impurity which can induce back-scattering in the presence of a magnetic field. Ref: arXiv:1112.5400
Saturday, 8 September 2012
Sunday, 9 September 2012