Welcome
toThe Virtual Experiments Laboratory
Department of Physics
Welcome
to(Web site under construction)
This virtual laboratory is
designed for the postgraduates and researchers. Using this lab one can
characterize various materials and devices for their transport properties in a
temperature range of 2-300K and magnetic field range of 0 to 7 Tesla. The user
can send a sample to the laboratory with or without electrical connections and
an attendant can mount the sample on the apparatus as per user directives. The
user than gets a full access to control the experiment to acquire the desired
transport data. To know more details about the capabilities of the system for
general samples please go to user specific experiments.
We have also included a few standard
experiments to familiarize the user with the set-up. These standard experiments
can also be performed by undergraduate students to learn the physics of a few
phenomena and low temperature experimental techniques.
Transport measurements are crucial for characterizing the electronic nature of the materials or devices. These measurements include resistivity, magnetoresistance, I-V characteristics, thermoelectric power, Hall coefficient. The temperature dependence of such transport data gives crucial information about the physics and applicability of the device. Further, the magnetic field dependent transport can probe the detailed magnetic interactions and coupling between electron conduction and magnetic structure of the sample.
Experiment-1: Colossal Magneto-Resistive (CMR) effect
Experiment-2: Transport properties of a type-I superconductor
Experiment-3: Giant Magneto-Resistive Sensors
Experiment-4: Characteristics of a High-Tc Cuprate superconductor
Experiment-5: Hall Resistivity
Experiment-6: Thermoelectric Power (of Bi2Te3)
Experiment-7: I-V characteristics of a SIN tunnel junction
Experiment-8: I-V characteristics of a Josephson junction and its magnetic field dependence