Electron-Phonon Interaction in the High-<svg style="vertical-align:-4.65128pt;width:24.862499px;" id="M1" height="20.549999" version="1.1" viewBox="0 0 24.862499 20.549999" width="24.862499"  xmlns="http://www.w3.org/2000/svg">
	<g transform="matrix(1.25,0,0,-1.25,0,20.55)">
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				<tspan style="font-size: 17.93px; " x="0" y="0">𝑇</tspan>
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</svg> Cuprates in the Framework of the Van Hove Scenario

<table>Anisotropic superconducting gap. Exact calculation for <svg height="11.3125" id="M171" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 12.9375 11.3125" width="12.9375" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,11.25)"><path d="M488 658v-28q-47 -3 -58.5 -12t-11.5 -39q49 -2 97 -15t93.5 -39.5t73.5 -75t28 -112.5q0 -53 -19.5 -96.5t-50 -71t-70 -47t-77.5 -27.5t-75 -9q0 -36 11.5 -45.5t58.5 -12.5v-28h-223v28q47 3 58.5 12.5t11.5 45.5q-47 1 -94.5 14t-93 39.5t-74.5 76t-29 114.5
q0 51 19 93.5t49 70t69.5 47t77.5 28t76 10.5q0 30 -11 39t-54 12v28h218zM335 118v429q-34 -2 -67 -13.5t-63.5 -35t-49.5 -65.5t-19 -96q0 -56 18.5 -99t49 -67.5t63.5 -37.5t68 -15zM418 547v-429q35 2 67.5 14t63.5 35.5t50 66.5t19 99t-19 99t-50 66.5t-64 35t-67 13.5
z" id="x3A6"></path></g>
</svg> = 0  and  <svg height="8.1499996" id="M172" style="vertical-align:-0.1638pt" version="1.1" viewbox="0 0 10.175 8.1499996" width="10.175" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,7.888)"><path d="M574 449q-23 -58 -38 -79q-16 -4 -79 -4q-27 -100 -46 -219q-14 -87 7 -87t74 36l13 -27q-74 -81 -139 -81q-48 0 -48 62q0 22 8 59l60 258l-154 4q-21 -103 -54.5 -209t-64.5 -151q-38 -23 -83 -23l-7 15q46 36 94 152.5t64 216.5q-81 0 -138 -54l-18 23q22 27 39.5 43
t61.5 33.5t100 17.5q43 0 131.5 -2.5t129.5 -2.5q23 0 33.5 5t24.5 25z" id="x1D70B"></path></g>
</svg>/4. This represents an <svg height="7.9499998" id="M173" style="vertical-align:-0.1638pt" version="1.1" viewbox="0 0 6.5 7.9499998" width="6.5" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,7.675)"><path d="M352 391q0 -31 -27 -44q-14 -7 -24 6q-39 48 -84 48q-23 0 -39.5 -15t-16.5 -40q0 -43 73 -90q49 -32 70 -58t21 -57q0 -58 -62 -105.5t-129 -47.5q-40 0 -75.5 25t-35.5 52q0 28 32 46q7 4 15 3t11 -6q19 -31 48.5 -50.5t54.5 -19.5q34 0 54 19.5t20 42.5q0 43 -65 81
q-97 56 -97 123q0 50 51 96q19 17 58 32.5t62 15.5q37 0 61 -18t24 -39z" id="x1D460"></path></g>
</svg>-wave anisotropic superconducting gap with no nodes in <svg height="11.3125" id="M174" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 12.9375 11.3125" width="12.9375" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,11.25)"><path d="M488 658v-28q-47 -3 -58.5 -12t-11.5 -39q49 -2 97 -15t93.5 -39.5t73.5 -75t28 -112.5q0 -53 -19.5 -96.5t-50 -71t-70 -47t-77.5 -27.5t-75 -9q0 -36 11.5 -45.5t58.5 -12.5v-28h-223v28q47 3 58.5 12.5t11.5 45.5q-47 1 -94.5 14t-93 39.5t-74.5 76t-29 114.5
q0 51 19 93.5t49 70t69.5 47t77.5 28t76 10.5q0 30 -11 39t-54 12v28h218zM335 118v429q-34 -2 -67 -13.5t-63.5 -35t-49.5 -65.5t-19 -96q0 -56 18.5 -99t49 -67.5t63.5 -37.5t68 -15zM418 547v-429q35 2 67.5 14t63.5 35.5t50 66.5t19 99t-19 99t-50 66.5t-64 35t-67 13.5
z" id="x3A6"></path></g>
</svg> = <svg height="8.1499996" id="M175" style="vertical-align:-0.1638pt" version="1.1" viewbox="0 0 10.175 8.1499996" width="10.175" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,7.888)"><path d="M574 449q-23 -58 -38 -79q-16 -4 -79 -4q-27 -100 -46 -219q-14 -87 7 -87t74 36l13 -27q-74 -81 -139 -81q-48 0 -48 62q0 22 8 59l60 258l-154 4q-21 -103 -54.5 -209t-64.5 -151q-38 -23 -83 -23l-7 15q46 36 94 152.5t64 216.5q-81 0 -138 -54l-18 23q22 27 39.5 43
t61.5 33.5t100 17.5q43 0 131.5 -2.5t129.5 -2.5q23 0 33.5 5t24.5 25z" id="x1D70B"></path></g>
</svg>/4.</table>

Advances in Condensed Matter Physics

fig7

Figure 7

Figure 7: Electron-Phonon Interaction in the High-<svg style="vertical-align:-4.65128pt;width:24.862499px;" id="M1" height="20.549999" version="1.1" viewBox="0 0 24.862499 20.549999" width="24.862499"  xmlns="http://www.w3.org/2000/svg">
	<g transform="matrix(1.25,0,0,-1.25,0,20.55)">
		<g transform="translate(72,-55.56)">
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				<tspan style="font-size: 17.93px; " x="0" y="0">𝑇</tspan>
			</text>

			<text transform="matrix(1,0,0,-1,-62.09,55.76)">
				<tspan style="font-size: 12.55px; " x="0" y="0">𝐶</tspan>
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</svg> Cuprates in the Framework of the Van Hove Scenario 

Figure 7 | Electron-Phonon Interaction in the High-
	
		
			
				𝑇
			

			
				𝐶
			

		
	
 Cuprates in the Framework of the Van Hove Scenario 

Advances in Condensed Matter Physics

Electron-Phonon Interaction in the High- 𝑇 𝐶 Cuprates in the Framework of the Van Hove Scenario

Figure 7

Electron-Phonon Interaction in the High- Cuprates in the Framework of the Van Hove Scenario