<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0035-001X</journal-id>
<journal-title><![CDATA[Revista mexicana de física]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. fis.]]></abbrev-journal-title>
<issn>0035-001X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Física]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0035-001X2003000500003</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA["One-dimensional" coherent states and oscillation effects in metals in a magnetic field]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Contreras-Solorio]]></surname>
<given-names><![CDATA[D.A.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cruz-Alcaz]]></surname>
<given-names><![CDATA[J.A.de la]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pavlov]]></surname>
<given-names><![CDATA[S.T.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Autónoma de Zacatecas Facultad de Física ]]></institution>
<addr-line><![CDATA[Zacatecas ]]></addr-line>
<country>México</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Russian Academy of Sciences Pyotr Nikolaevich Lebedev Institute of Physics ]]></institution>
<addr-line><![CDATA[Moscú ]]></addr-line>
<country>Rusia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>10</month>
<year>2003</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>10</month>
<year>2003</year>
</pub-date>
<volume>49</volume>
<numero>5</numero>
<fpage>407</fpage>
<lpage>410</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-001X2003000500003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-001X2003000500003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-001X2003000500003&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Using the "one-dimensional" coherent electron states in a quantizing magnetic field the oscillating part of the electron density of states for a metal, which determines the physical nature for the oscillations of the thermodynamic and kinetic metal characteristic in magnetic field, is calculated. The physical reason of the significant simplification of the mathematical procedure is that the coherent states are most adequate to describe the quantum macroscopic phenomena such as the Shubnikov -de Haas and the de Haas- van Alphen effects in metals.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Usando los estados electrónicos coherentes "unidimensionales" en un campo magnético cuantizador, se calcula la parte oscilatoria de la densidad de estados electrónicos en un metal, la cual determina la naturaleza física de las oscilaciones de las características termodinámicas y cinéticas de un metal en un campo magnético. Físicamente la razón de la gran simplificación que se obtiene mediante este procedimiento matemático, es que los estados coherentes usados en el proceso de cálculo son los más adecuados para describir los fenómenos cuánticos macroscópicos, tales como los efectos Shubnikov -de Haas y de Haas- van Alphen en metales.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Shubnikov-de Haas effect]]></kwd>
<kwd lng="en"><![CDATA[macroscopic quantum phenomena in magnetic field]]></kwd>
<kwd lng="es"><![CDATA[Efecto de Shubnikov-de Haas]]></kwd>
<kwd lng="es"><![CDATA[fenómenos cuánticos macroscópicos]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="justify"><font face="verdana" size="4">Investigaci&oacute;n</font></p>      <p align="justify">&nbsp;</p>     <p align="center"><font face="verdana" size="4"><b>"One&#45;dimensional" coherent states and oscillation effects in metals in a magnetic field</b></font></p>      <p align="center">&nbsp;</p>     <p align="center"><font face="verdana" size="2"><b>D.A. Contreras&#45;Solorio<sup>1</sup>, J.A.de la Cruz&#45;Alcaz<sup>1</sup>, S.T. Pavlov<sup>2</sup></b></font></p>      <p align="justify">&nbsp;</p>     <p align="justify"><font face="verdana" size="2"><i><sup>1</sup> Facultad</i> <i>de</i> <i>F&iacute;sica</i> <i>de</i> <i>la</i> <i>UAZ,</i> <i>Apartado</i> <i>Postal</i> <i>C&#45;580,</i> <i>98060</i> <i>Zacatecas,</i> <i>Zac.,</i> <i>M&eacute;xico</i></font></p>      <p align="justify"><font face="verdana" size="2"><i><sup>2</sup> P.</i> <i>N.</i> <i>Lebedev</i> <i>Institute</i> <i>of</i> <i>Physics,</i> <i>Russian</i> <i>Academy</i> <i>of</i> <i>Sciences,</i> <i>Moscow,</i> <i>119991</i> <i>Russia</i></font></p>      <p align="justify">&nbsp;</p>     <p align="justify"><font face="verdana" size="2">Recibido el 21 de abril de 2003.     ]]></body>
<body><![CDATA[<br>   Aceptado el 25 de abril de 2003.</font></p>      <p align="justify">&nbsp;</p>     <p align="justify"><font face="verdana" size="2"><b>Abstract</b></font></p>      <p align="justify"><font face="verdana" size="2">Using the "one&#45;dimensional" coherent electron states in a quantizing magnetic field the oscillating part of the electron density of states for a metal, which determines the physical nature for the oscillations of the thermodynamic and kinetic metal characteristic in magnetic field, is calculated. The physical reason of the significant simplification of the mathematical procedure is that the coherent states are most adequate to describe the quantum macroscopic phenomena such as the Shubnikov &#45;de Haas and the de Haas&#45; van Alphen effects in metals.</font></p>      <p align="justify"><font face="verdana" size="2"><b>Keywords:</b> Shubnikov&#45;de Haas effect; macroscopic quantum phenomena in magnetic field.</font></p>      <p align="justify">&nbsp;</p>     <p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>      <p align="justify"><font face="verdana" size="2">Usando los estados electr&oacute;nicos coherentes "unidimensionales" en un campo magn&eacute;tico cuantizador, se calcula la parte oscilatoria de la densidad de estados electr&oacute;nicos en un metal, la cual determina la naturaleza f&iacute;sica de las oscilaciones de las caracter&iacute;sticas termodin&aacute;micas y cin&eacute;ticas de un metal en un campo magn&eacute;tico. F&iacute;sicamente la raz&oacute;n de la gran simplificaci&oacute;n que se obtiene mediante este procedimiento matem&aacute;tico, es que los estados coherentes usados en el proceso de c&aacute;lculo son los m&aacute;s adecuados para describir los fen&oacute;menos cu&aacute;nticos macrosc&oacute;picos, tales como los efectos Shubnikov &#45;de Haas y de Haas&#45; van Alphen en metales.</font></p>      <p align="justify"><font face="verdana" size="2"><b>Palabras clave:</b> Efecto de Shubnikov&#45;de Haas; fen&oacute;menos cu&aacute;nticos macrosc&oacute;picos.</font></p>      <p align="justify"><font face="verdana" size="2">PACS: 71.18; 75.45.+j</font></p>      ]]></body>
<body><![CDATA[<p align="justify">&nbsp;</p>     <p align="justify"><font face="verdana" size="2"><a href="/pdf/rmf/v49n5/v49n5a3.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>      <p align="justify">&nbsp;</p>     <p align="justify"><font face="verdana" size="2"><b>Acknowledgements</b></font></p>      <p align="justify"><font face="verdana" size="2">The authors are grateful to M. Harkins for the critical reading of the manuscript. D.A.C.S. also thanks CONACyT (27736&#45;E) for the financial support. This work has been partially supported by the Program "Solid State Nanostructures Physics" and by the Program "Integration".</font></p>      <p align="justify">&nbsp;</p>     <p align="justify"><font face="verdana" size="2"><b>References</b></font></p>      <!-- ref --><p align="justify"><font face="verdana" size="2">1. R.J. Glauber, <i>Phys.</i> <i>Rev.</i> <i>Lett.</i> 10 (1963) 84.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8297124&pid=S0035-001X200300050000300001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>      <!-- ref --><p align="justify"><font face="verdana" size="2">2. R.J. Glauber, <i>Quantum</i> <i>Optics</i> <i>and</i> <i>Electronics,</i> Edited by C. Dewitt and A. Blandin, (New York&#45;London&#45;Paris. Gordon and Breach. Science Publishers 1965).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8297126&pid=S0035-001X200300050000300002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>      <!-- ref --><p align="justify"><font face="verdana" size="2">3. A.A. Abrikosov, <i>Theory</i> <i>of</i> <i>Metals</i> (Nauka, Moscow, 1987).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8297128&pid=S0035-001X200300050000300003&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>      <!-- ref --><p align="justify"><font face="verdana" size="2">4. L.D. Landau and E.M. Lifshitz, <i>Statistical</i> <i>Physics</i> (Pergamon, Oxford, 1981).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8297130&pid=S0035-001X200300050000300004&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>      <!-- ref --><p align="justify"><font face="verdana" size="2">5. E.M. Lifshitz and L.P. Pitaevsky, <i>Physical</i> <i>Kinetics</i> (Pergamon, Oxford, 1981).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8297132&pid=S0035-001X200300050000300005&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>      <!-- ref --><p align="justify"><font face="verdana" size="2">6. H. Haken, <i>Quantenfield</i> <i>Theorie</i> <i>des</i> <i>Festkorpers</i> (Stutgart: B.G. Teubner, 1973)</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8297134&pid=S0035-001X200300050000300006&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">7. L.D. Landau and E.M. Lifshitz, <i>Quantum</i> <i>Mechanics</i> (Pergamon, Oxford, 1977).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8297135&pid=S0035-001X200300050000300007&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>      ]]></body>
<body><![CDATA[<!-- ref --><p align="justify"><font face="verdana" size="2">8. S.T. Pavlov and A.V. Prokhorov. <i>Zh.</i> <i>Eksp.</i> <i>Teor.</i> <i>Fiz.</i> 100 (1991) 510,    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8297137&pid=S0035-001X200300050000300008&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --> <i>Sov.</i> <i>Phys.</i> <i>JETP</i> 73 (1991) 280.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8297138&pid=S0035-001X200300050000300009&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>      ]]></body><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Glauber]]></surname>
<given-names><![CDATA[R.J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Phys. Rev. Lett.]]></source>
<year>1963</year>
<volume>10</volume>
<page-range>84</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Glauber]]></surname>
<given-names><![CDATA[R.J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Quantum Optics and Electronics]]></source>
<year>1965</year>
<publisher-loc><![CDATA[New YorkLondonParis ]]></publisher-loc>
<publisher-name><![CDATA[Gordon and Breach. Science Publishers]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Abrikosov]]></surname>
<given-names><![CDATA[A.A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Theory of Metals]]></source>
<year>1987</year>
<publisher-loc><![CDATA[Moscow ]]></publisher-loc>
<publisher-name><![CDATA[Nauka]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Landau]]></surname>
<given-names><![CDATA[L.D.]]></given-names>
</name>
<name>
<surname><![CDATA[Lifshitz]]></surname>
<given-names><![CDATA[E.M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Statistical Physics]]></source>
<year>1981</year>
<publisher-loc><![CDATA[Oxford ]]></publisher-loc>
<publisher-name><![CDATA[Pergamon]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lifshitz]]></surname>
<given-names><![CDATA[E.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Pitaevsky]]></surname>
<given-names><![CDATA[L.P.]]></given-names>
</name>
</person-group>
<source><![CDATA[Physical Kinetics]]></source>
<year>1981</year>
<publisher-loc><![CDATA[Oxford ]]></publisher-loc>
<publisher-name><![CDATA[Pergamon]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Haken]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<source><![CDATA[Quantenfield Theorie des Festkorpers]]></source>
<year>1973</year>
<publisher-loc><![CDATA[Stutgart ]]></publisher-loc>
<publisher-name><![CDATA[B.G. Teubner]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Landau]]></surname>
<given-names><![CDATA[L.D.]]></given-names>
</name>
<name>
<surname><![CDATA[Lifshitz]]></surname>
<given-names><![CDATA[E.M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Quantum Mechanics]]></source>
<year>1977</year>
<publisher-loc><![CDATA[Oxford ]]></publisher-loc>
<publisher-name><![CDATA[Pergamon]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pavlov]]></surname>
<given-names><![CDATA[S.T.]]></given-names>
</name>
<name>
<surname><![CDATA[Prokhorov]]></surname>
<given-names><![CDATA[A.V.]]></given-names>
</name>
</person-group>
<source><![CDATA[Zh. Eksp. Teor. Fiz.]]></source>
<year>1991</year>
<volume>100</volume>
<page-range>510</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<source><![CDATA[Sov. Phys. JETP]]></source>
<year>1991</year>
<volume>73</volume>
<page-range>280</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
