@article { ISI:000357498200004,
	title = {Combined experimental and theoretical study of the structural, electronic and vibrational properties of bulk and few-layer Td-WTe2},
	journal = {Journal of Physics-Condensed Matter},
	volume = {27},
	number = {28},
	year = {2015},
	month = {JUL},
	pages = {285401},
	publisher = {IOP PUBLISHING LTD},
	address = {TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND},
	abstract = {<p>The recent discovery of non-saturating giant positive magnetoresistance has aroused much interest in Td-WTe2. We have investigated structural, electronic and vibrational properties of bulk and few-layer Td-WTe2 experimentally and theoretically. Spin-orbit coupling is found to govern the semi-metallic character of Td-WTe2 and its structural link with the metallic 1 T form provides an understanding of its structural stability. There is a metal-to-insulator switch-over in the electrical conductivity and a change in the sign of the Seebeck coefficient around 373 K. Lattice vibrations of Td-WTe2 have been analyzed using first-principles calculations. Out of the 33 possible zone-center Raman active modes, five distinct Raman bands are observed around 112, 118, 134, 165 and 212 cm(-1) in bulk Td-WTe2. Based on symmetry analysis and calculated Raman tensors, we assign the intense bands at 165 cm(-1) and 212 cm(-1) to the A(1){\textquoteright} and A(1){\textquoteright}{\textquoteright} modes, respectively. Most of the Raman bands stiffen with decreasing thickness, and the ratio of the integrated intensities of the A(1){\textquoteright}{\textquoteright} to A(1){\textquoteright} bands decreases in the few-layer sample, while all the bands soften in both the bulk and few-layer samples with increasing temperature.</p>},
	keywords = {Raman spectroscopy, Td-structure, tungsten ditelluride},
	issn = {0953-8984},
	doi = {10.1088/0953-8984/27/28/285401},
	author = {Jana, Manoj K. and Singh, Anjali and Late, Dattatray J. and Rajamathi, Catherine R. and Biswas, Kanishka and Felser, Claudia and Waghmare, Umesh V. and Rao, C. N. R.}
}
@article {42910,
	title = {Classification and study of near-surface region of active material for gas detection using x-ray photoelectron spectroscopy},
	journal = {Advanced Materials Letters},
	volume = {7},
	year = {2016},
	month = {JAN},
	pages = {330-336},
	abstract = {<p>We report investigations on resistive material SnO2: Cu (9 wt. \%) evaluated and optimized for the application of gas sensor. SnO2: Cu has been thoroughly characterized by using X-ray photoelectron spectroscopy (XPS). The deconvolution of XPS spectra confirms the existing surface reactive species in the form of states of the metal orbital and the presence of multiple pathways for the detection of CO vis-{\`a}-vis sintering temperature effect. Enhanced CO pickup at the sintering temperature of 650 0C (wide range and low sensitivity) and 750 0C (short range and high sensitivity) has been observed. The CO sensing and XPS data correlates well along with the nonconventional use of variation in average XPS background intensity of general scan seems to be related to optimized sensitivity conditions of various gases. Copyright {\textcopyright} 2016 VBRI Press.</p>},
	doi = {10.5185/amlett.2016.6137},
	author = {More, Pravin S. and Late, Dattatray J. and Kondawar, Subhash B.}
}
