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• W2162093744 abstract "The structural and transport properties of polycrystalline ${mathrm{Ti}}_{1text{ensuremath{-}}x}{mathrm{Pt}}_{x}{mathrm{Se}}_{2text{ensuremath{-}}y}phantom{rule{0.28em}{0ex}}(xensuremath{le}0.13,phantom{rule{0.28em}{0ex}}yensuremath{le}0.2)$ are studied, revealing highly tunable electrical properties, spanning nearly ten orders of magnitude in scaled resistivity. Using x-ray and neutron diffraction, Pt is found to dope on the Ti site. In the absence of Pt doping (for $x=0$), Se deficiency ($y>0$) increases the metallic character of ${mathrm{TiSe}}_{2}$, while a large increase of the low-temperature resistivity is favored by a lack of Se deficiency ($y=0$) and increasing amounts of doped Pt ($x>0$). The chemical tuning of the resistivity in ${mathrm{Ti}}_{1text{ensuremath{-}}x}{mathrm{Pt}}_{x}{mathrm{Se}}_{2text{ensuremath{-}}y}$ with Se deficiency and Pt doping results in a metal-to-insulator transition. Simultaneous Pt doping and Se deficiency ($x,y>0$) confirms the competition between the two opposing trends in electrical transport, with the main outcome being the suppression of the charge density wave transition below 2 K for $y=2x=0.18$. Band structure calculations on a subset of ${mathrm{Ti}}_{1text{ensuremath{-}}x}{mathrm{Pt}}_{x}{mathrm{Se}}_{2text{ensuremath{-}}y}$ compositions are in line with the experimental observations." @default.
• W2162093744 created "2016-06-24" @default.
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• W2162093744 date "2015-01-20" @default.
• W2162093744 modified "2023-10-18" @default.
• W2162093744 title "Chemical tuning of electrical transport in<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:msub><mml:mi mathvariant=normal>Ti</mml:mi><mml:mrow><mml:mn>1</mml:mn><mml:mtext>−</mml:mtext><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi mathvariant=normal>Pt</mml:mi><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mi mathvariant=normal>Se</mml:mi><mml:mrow><mml:mn>2</mml:mn><mml:mtext>−</mml:mtext><mml:mi>y</mml:mi></mml:mrow></mml:msub></mml:math>" @default.
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• W2162093744 doi "https://doi.org/10.1103/physrevb.91.045125" @default.
• W2162093744 hasPublicationYear "2015" @default.
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