Complex network measures and Dynamics of stars from light curves
Prof. G. Ambika
How "cold" are super-thin galaxies?
Resonances as probes of heavy-ion collisions at the LHC
Spreading of impacted drops: Pattern formation on powder layers
The youngest free-floating planets in the solar neighbourhood: Detection, confirmation and properties
Transport properties of organic semiconductors
Controlling self-similar waves in nonlinera optical waveguides
Thokala Soloman Raju
Topological Phases in Honeycomb Lattice
Atomic & Molecular Physics with Radiofrequency Ion Traps
LEGO with 2D materials
P.S. Anil Kumar*
Department of Physics
Indian Institute of Science
2D materials are becoming building blocks for many new exotic phenomena and devices. Graphene, topological insulators, transition metal dichalcogenides, NbSe2 superconductors etc. are the examples of some of the 2D materials. Topological insulators are materials characterized by an insulating bulk and gapless metallic states on the sample surface. Electrical transport in three dimensional topological insulators occurs through spin- momentum locked topological surface states that enclose an insulating bulk. In the presence of a magnetic field, surface states get quantized into Landau levels giving rise to chiral edge states that are naturally spin-polarized due to spin momentum locking. Robust access to topological surface states has presented itself as a formidable challenge due to inevitable bulk doping that mires the effects arising from the topological surface states. In this lecture, I will demonstrate how to overcome this problem by using bulk-insulating topological insulators featuring surface states that are highly amenable to detection and control using electrostatic gating1-6. Here, for the first time, we study electrostatically defined n-p-n junctions7 of bulk insulating topological insulator BiSbTe1.25Se1.75. I will also demonstrate how these fabrication technologies can be extended to get diverse devises such as edge-contacted topological insulator FETs and topological insulator/superconductor hetero-interfaces8 opening up the possibility of performing advanced spintronics and quantum computing using this new material class.
How to reach IISER Tirupati:
1. Here are the directions on how to reach IISER Tirupati Click here
2. IISER Tirupati is equidistant from Renigunta railway station and Tirupati Rly Station (also Tirupati us stop). From both these places, an auto would cost around 150 INR.
3. I f one is taking an auto from either of the above mentioned places, one should mention Sree Rama Engineering College on Karakambadi Road. IISER Tirupati is right opposite to Sree Rama Engineering College on Karakambadi Road, which is well known to all the auto drivers.