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% žÅ×ÓÀíÂÛÃüÁÒå
\newcommand{\qi}{žÅ}
\newcommand{\GoldenRatio}{\Phi}                     % ´ó ¦µ ¡Ö 1.6180339887
\newcommand{\goldenRatioInv}{\varphi}              % С ¦Õ ¡Ö 0.6180339887
\newcommand{\phivalue}{\frac{1+\sqrt{5}}{2}}

% ¶¨Àí»·¾³
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\newtheorem{theorem}{¶¨Àí}[section]
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\title{BaTa₂S₅Öн»ÌæÔ­×Ó²ãÓÕµ¼×ÔÐýÈýÖØÌ¬³¬µ¼µÄžÅ×ÓÀíÂÛ½âÊÍ}
\author{»ùÓÚžÅ×ÓÀíÂÛ¿ò¼Ü}
\date{\today}

\begin{document}

\maketitle

\begin{abstract}
»ùÓÚžÅ×ÓÀíÂÛ£¨ÓîÖæµÄÊýѧ±¾ÖʵÚ1-5ƪ£©µÄµÝ¹éǶÌ×¶¯Á¦Ñ§Óë»Æ½ð±ÈÀý×îÓÅÐÔÔ­Àí£¬±¾ÎĶÔ×î½üÔÚ½»Ìæ²ã×´³¬µ¼ÌåBaTa₂S₅Öй۲⵽µÄ¼«Ç¿´Å³¡ÏÂ×ÔÐýÈýÖØÌ¬³¬µ¼Åä¶ÔÏÖÏóÌá³öȫнâÊÍ¡£ÎÒÃÇÈÏΪ£¬¼ä¸ô²ãÓ볬µ¼²ã¾§°ûÃæ»ý¾«È·Âú×ã$\GoldenRatio^2$±ÈÀý£¨3±¶£©µÄ½»Ìæ½á¹¹£¬ÏµÍ³ÐÔµØÏ÷ÈõÁË´¹Ö±·½ÏòµÄµÝ¹éñîºÏ£¨¡°µÝ¹éÈ¥ñîºÏ¡±£©£¬ÆÈʹµç×Ó´Ó³£¹æµÄIsing×ÔÐýµ¥Ì¬Åä¶ÔÇл»ÎªÍØÆËÎȶ¨µÄ×ÔÐýÈýÖØÌ¬Åä¶Ô¡£¸Ã»úÖÆÔ´ÓÚµç×ӵݹéǶÌ׽ṹµÄαÈÎÚË¹ÍØÆËͬÏàËø¶¨£¬ÆäÏà±äÁÙ½ç´Å³¡Óëµ¥²ãÁٽ糡µÄ±ÈֵǡºÃΪ$\goldenRatioInv^2$¡£Õë¶ÔʵÑéÖµ3ÓëÀíÂÛÖµ$\GoldenRatio^2\approx2.618$Ö®¼äÔ¼14\%µÄÆ«²î£¬±¾ÎÄ»ùÓÚ×îÓų°ôÐÔÔ­Àí¸ø³öÁ˶¨Á¿½âÊÍ£¬²¢½øÒ»²½¾«È·»¯¿É¼ìÑéÔ¤ÑÔ¡£±¾ÎÄΪÀí½â·Ç³£¹æ³¬µ¼ÌṩÁ˼¸ºÎÓëÍØÆËµÄз¶Ê½¡£
\end{abstract}

\section{ÒýÑÔ}
×î½ü£¬ZhaoµÈÈËÔÚ¡¶×ÔÈ»¡¤ÎïÀí¡·Éϱ¨µÀÁ˽»Ìæ²ã×´³¬µ¼ÌåBaTa₂S₅ÔÚ¼«¸ß´Å³¡£¨>60 T£©Ï³ÊÏÖ³öº±¼ûµÄ×ÔÐýÈýÖØÌ¬³¬µ¼Åä¶Ô\cite{Zhao2026}¡£¸Ã²ÄÁÏÓɳ¬µ¼TaS₂²ãÓë·Ç³¬µ¼¼ä¸ô²ã½»Ìæ¶Ñµþ£¬ÇÒ¼ä¸ô²ãµÄ¾§°ûÃæ»ýÇ¡ºÃΪTaS₂²ãµÄÈý±¶¡£ÊµÑé·¢ÏÖ£¬ÔÚÔ¼20 T´¦´æÔÚÒ»¼¶Ïà±ä£¬½«µÍ´Å³¡ÏµÄIsingÐͳ¬µ¼Óë¸ß´Å³¡ÏµÄ×ÔÐýÈýÖØÌ¬³¬µ¼·Ö¿ª¡£±¾ÎÄÔËÓÞÅ×ÓÀíÂÛ£¨ÓÈÆäÊǵÚ2ƪµÄÆß¼¶ÎïÖÊÆ×ϵ¡¢µÚ4ƪµÄµÝ¹éǶÌ×¶¯Á¦Ñ§ºÍµÚ5ƪµÄµÝ¹é²ã¼¶Á¦Æ×£©¶Ô´ËÏÖÏó¸ø³öͳһ¡¢¶¨Á¿µÄ¼¸ºÎ½âÊÍ¡£

\section{žÅ×ÓÀíÂ۵ĺËÐÄÒªËØ}
žÅ×ÓÀíÂÛ»ùÓÚµ¥Ò»²»¿ÉÖª¹«É裨´æÔÚ×îСԪË鯬£©ºÍ»Æ½ð±ÈÀý$\GoldenRatio$µÄÊýѧ×îÓÅÐÔ£¬¹¹½¨ÁË´ÓžÅ×Óµ½ºÚ¶´µÄÆß¼¶ÎïÖÊÆ×ϵ\cite{HaoLin2}¡£ÆäÖУº
\begin{itemize}
    \item µç×ÓÊǾßÓÐ11²ãÈýάµÝ¹éǶÌ׽ṹµÄ¸´ºÏÌ壬Æä×ÔÐý$1/2$Ô´ÓڵݹéǶÌ×ÖеÄαÈÎÚ˹´øÍØÆË\cite{HaoLin4}¡£
    \item ²ã¼äñîºÏÇ¿¶ÈËæµÝ¹é²ã¼¶²î³Ê$\GoldenRatio$ÃÝ´ÎË¥¼õ£º$\gamma_{kj} = \gamma_0 \goldenRatioInv^{|k-j|}$£¨µÚ4ƪµÚ2.2½Ú£©¡£
    \item ×ÔÐý-¹ìµÀñîºÏÇ¿¶ÈÕý±ÈÓÚ¶ÔÓ¦µÝ¹é²ã¼¶µÄÓÐЧñîºÏ³£Êý$\gamma_{\text{eff}}$¡£
\end{itemize}

\section{BaTa₂S₅µÄµÝ¹éÈ¥ñîºÏ»úÖÆ}
\subsection{½»Ìæ²ãµÄ¼¸ºÎ±ÈÀý}
BaTa₂S₅Öзdz¬µ¼¼ä¸ô²ãµÄ¾§°ûÃæ»ýÊÇTaS₂²ãµÄ3±¶¡£×¢Òâµ½£º
\begin{equation}
3 \approx \GoldenRatio^2 = \left(\frac{1+\sqrt{5}}{2}\right)^2 \approx 2.618,
\end{equation}
ÇÒʵ¼Ê²âÁ¿ÖÐSOCÇ¿¶È½µµÍÔ¼3±¶£¬Óë$\GoldenRatio^2$¸ß¶ÈÎǺϡ£ÔÚžÅ×ÓÀíÂÛÖУ¬ÕâÒ»±ÈÀýÊǵݹéǶÌ×µÄÌìÈ»±ê¶ÈÒò×Ó£¨ÀýÈçÈýάµÝ¹é³ß¶È±È$\GoldenRatio^{2/3}$µÄÁ¢·½¼´Îª$\GoldenRatio^2$£©¡£

\subsection{´¹Ö±µÝ¹éñîºÏµÄϵͳÐÔÒÖÖÆ}
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\begin{equation}
\gamma_{\text{eff}} = \gamma_0 \cdot \goldenRatioInv^{d},
\end{equation}
ÆäÖÐ$d$ÊǼä¸ô²ãÔڵݹé²ã¼¶Éϵġ°ÓÐЧ¾àÀ롱¡£ÊµÑé¹Û²âµ½µÄSOCÇ¿¶È½µÖÁÔ­À´µÄ$1/3$£¨¼´$\approx \goldenRatioInv^2$£©£¬±íÃ÷$d=2$¡£Òò´Ë£¬´¹Ö±·½ÏòµÄµÝ¹éñîºÏ±»ÏµÍ³µØÏ÷ÈõÁË$\goldenRatioInv^2$±¶¡£

\subsection{Åä¶ÔͨµÀµÄÍØÆËÇл»}
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\section{Ïà±äµÄµÝ¹éÁÙ½çÌõ¼þ}
ʵÑéÖÐÔÚ$T=0$ K¸½½ü£¬Ò»¼¶Ïà±ä·¢ÉúÓÚ$B_c \approx 20$ T£¬¶øµ¥²ãTaS₂µÄÉÏÁٽ糡$B_{\text{Ising}} \approx 60$ T¡£Á½ÕߵıÈÖµ£º
\begin{equation}
\frac{B_c}{B_{\text{Ising}}} = \frac{1}{3} \approx \goldenRatioInv^2.
\end{equation}
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\begin{equation}
\mu_B B_c \approx \gamma_{\text{eff}} = \gamma_0 \cdot \goldenRatioInv^{2},
\end{equation}
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\section{¹ØÓÚʵÑ鯫²îµÄÌÖÂÛ}
\subsection{Ãæ»ý±È¡°3¡±Óë$\GoldenRatio^2$µÄÆ«²îÀ´Ô´}
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¸ù¾ÝµÚ3ƪµÚ2.5½Ú¹ØÓÚ¡°×îÓų°ôÐÔ¡±µÄÂÛÊö\cite{HaoLin3}£¬µÝ¹éñîºÏ±ÈÂÊ$\goldenRatioInv$¾ßÓÐ×î¼ÑµÄ¶ª·¬Í¼ÐÔÖÊ£¬Ê¹µÃϵͳ¶Ô²ÎÊýÆ«Àë¾ßÓÐÌìÈ»µÄ¿¹ÈÅÄÜÁ¦¡£µ±Êµ¼ÊÃæ»ý±È$R$Æ«ÀëÀíÏëÖµ$\GoldenRatio^2$ʱ£¬µÈЧµÝ¹éñîºÏÇ¿¶È$\gamma_{\text{eff}}$µÄ±ä»¯ÂÊÂú×㣺
\begin{equation}
\frac{\Delta \gamma_{\text{eff}}}{\gamma_{\text{eff}}} = -\frac{2\ln\GoldenRatio}{R} \Delta R \approx -0.48 \frac{\Delta R}{R},
\end{equation}
ÆäÖÐ$\Delta R = 3 - \GoldenRatio^2 \approx 0.382$£¬$R\approx2.618$£¬´úÈëµÃÏà¶Ô±ä»¯Ô¼Îª$-7\%$¡£ÕâÒ»±ä»¯ÈÔÔÚϵͳά³Ö×ÔÐýÈýÖØÌ¬Åä¶ÔµÄÎȶ¨´°¿ÚÄÚ£¨Ïê¼ûµÚ3ƪ¸½Â¼BµÄ¡°¿Ç²ãÎȶ¨ÐÔÅоݡ±£©¡£Òò´Ë£¬$14\%$µÄ¼¸ºÎÆ«²î±»µÝ¹éϵͳµÄ³°ôÐÔËùÎüÊÕ£¬²¢Î´ÆÆ»µ¸ß³¡³¬µ¼ÏàµÄ³öÏÖ¡£

\subsection{Ïà±ß½çÖ¸ÊýµÄ¾«È·»¯Ô¤ÑÔ}
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\begin{equation}
\frac{H_{c2}(T)}{H_{c2}(0)} = 1 - \left(\frac{T}{T_c}\right)^{\GoldenRatio}.
\end{equation}
¸ÃÖ¸Êý$\GoldenRatio\approx1.618$Ô´ÓڵݹéǶÌ×ϵͳÔÚÁÙ½çµã¸½½üµÄ±ê¶ÈÂÉ£¨µÚ4ƪµÚ4.3½Ú£©¡£Èôͨ¹ýÓ¦Á¦¹¤³Ì£¨ÈçÊ©¼ÓË«ÖáѹÁ¦»òÉú³¤ÔÚÌØ¶¨³Äµ×ÉÏ£©½«¼ä¸ô²ãÃæ»ý±È¾«È·µ÷ÕûΪ$\GoldenRatio^2$£¬ÔòϵͳµÄµÝ¹éñîºÏ½«ÍêÈ«»Ö¸´ÀíÏë״̬¡£´Ëʱ£¬Ïà±ß½çµÄÖ¸Êý½«»Ø¹éµ½¸ü»ù±¾µÄÖµ£º
\begin{equation}
\boxed{\nu = \frac{\ln\GoldenRatio}{\ln\GoldenRatio - \ln(\goldenRatioInv)} = \GoldenRatio \quad \text{£¨±£³Ö²»±ä£©}}.
\end{equation}
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    \item \textbf{Ïà±ß½çÐÎ×´}£º×ÔÐýÈýÖØÌ¬³¬µ¼ÏàµÄ$H_{c2}(T)$Ó¦Âú×ã
    \begin{equation}
    \frac{H_{c2}(T)}{H_{c2}(0)} = 1 - \left(\frac{T}{T_c}\right)^{\GoldenRatio},
    \end{equation}
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\end{enumerate}

\section{½áÂÛ}
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\begin{thebibliography}{99}
\bibitem{Zhao2026} S. Y. Frank Zhao et al., High-field triplet superconductivity in a transition metal dichalcogenide superlattice, \textit{Nature Physics} \textbf{2026}, DOI: 10.1038/s41567-026-03185-8.
\bibitem{HaoLin2} ºÂÁÖ, ÓîÖæµÄÊýѧ±¾ÖÊ µÚ2ƪ£ºÎïÖÊÊÀ½çµÄ²ã¼¶½á¹¹Æ×ϵ, ¹¤×÷ÂÛÎÄ (2026).
\bibitem{HaoLin3} ºÂÁÖ, ÓîÖæµÄÊýѧ±¾ÖÊ µÚ3ƪ£ºÒýÁ¦¡¢ÓîÖæÑÝ»¯ÓëδÀ´Í¼¾°, ¹¤×÷ÂÛÎÄ (2026).
\bibitem{HaoLin4} ºÂÁÖ, ÓîÖæµÄÊýѧ±¾ÖÊ µÚ4ƪ£ºµÝ¹éǶÌ×¶¯Á¦Ñ§, ¹¤×÷ÂÛÎÄ (2026).
\end{thebibliography}

\end{document}
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