N. Sarkar

activity

20042006

collaborators

4 papers

cond-mat.mtrl-sci2006

Photoluminescence Spectroscopy of Band Gap Shrinkage in GaN

Niladri Sarkar, Subhasis Ghosh

We present an experimental investigation of band-gap shrinkage in n-type GaN using photoluminescence spectroscopy, as a function of electron concentration and temperature. The obse…

cond-mat.supr-con2006

Photoinduced Suppression of Superconductivity in Bi $_{2}$ Sr $_{2}$ Ca $_{2}$ Cu $_{3}$ O $_{10 + δ}$

Subhasis Ghosh, Niladri Sarkar

Superconductivity in high temperature superconductors is achieved by introducing charge carriers into cuprate insulators containing CuO $_{2}$ planes. Perturbation in these CuO $_{2}$ pl…

cond-mat.mtrl-sci2005

Temperature dependence of the band gap shrinkage due to electron-phonon interaction in undoped n-type GaN

Niladri Sarkar, Subhasis Ghosh

The photoluminescence spectra of band-edge transitions in GaN is studied as a function of temperature. The parameters that describe the temperature dependence red-shift of the band…

cond-mat.mtrl-sci2004

Photoluminescence Spectroscopy of many-body Effects in Heavily Doped Al $_{x}$ Ga $_{1 - x}$ As

Subhasis Ghosh, Niladri Sarkar

We present an experimental investigation of heavy doping-induced many-body effects such as band gap narrowing(BGN) and Fermi edge singularity(FES) in Al $_{x}$ Ga $_{1 - x}$ As using photo…

Photoluminescence Spectroscopy of Band Gap Shrinkage in GaN

Photoinduced Suppression of Superconductivity in Bi2​Sr2​Ca2​Cu3​O10+δ​

Temperature dependence of the band gap shrinkage due to electron-phonon interaction in undoped n-type GaN

Photoluminescence Spectroscopy of many-body Effects in Heavily Doped Alx​Ga1−x​As

Photoinduced Suppression of Superconductivity in Bi $_{2}$ Sr $_{2}$ Ca $_{2}$ Cu $_{3}$ O $_{10 + δ}$

Photoluminescence Spectroscopy of many-body Effects in Heavily Doped Al $_{x}$ Ga $_{1 - x}$ As