對于LK-99，學(xué)術(shù)共同體應(yīng)該秉承科學(xué)的態(tài)度，更加包容地對待新發(fā)現(xiàn)。關(guān)于目前對LK-99是否室溫超導(dǎo)體的爭議，做為一個還算專業(yè)的材料學(xué)家（非超導(dǎo)專家），以下三點(diǎn)請大家關(guān)注：

1）既然我們認(rèn)為室溫超導(dǎo)理論應(yīng)該是一個全新的理論。BCS理論僅能解釋低溫超導(dǎo)，而高溫超導(dǎo)理論尚不完善。為什么我們?nèi)砸谩皞鹘y(tǒng)”的超導(dǎo)理論來評價(jià)室溫超導(dǎo)材料呢？

2）由LK-99的結(jié)構(gòu)示意圖可知（圖1a），LK-99是一種層狀材料，其超導(dǎo)相是跨層形成的一維超導(dǎo)鏈?？梢钥闯?，這種低維的超導(dǎo)是有取向性的。那么，在用四點(diǎn)法測試電阻時(shí)，似乎應(yīng)該按圖1b的方式沿Z軸進(jìn)行引線才能獲得準(zhǔn)確的結(jié)果，而目前的實(shí)驗(yàn)因?yàn)椴牧虾穸炔粔?，都是按圖1c的方式在X-Y面內(nèi)進(jìn)行引線測試的，勢必會極大地影響檢測結(jié)果。

3）在某些“邁斯納”效應(yīng)測試實(shí)驗(yàn)中，已經(jīng)表明了LK-99的“磁場釘扎”效應(yīng)，而不是普通的抗磁性。我們更應(yīng)該相信之所以LK-99尚未展現(xiàn)出完美的所謂的“邁斯納”效應(yīng)，只是由于材料制備方法不完善而導(dǎo)致的樣品質(zhì)量問題（如缺陷、超導(dǎo)相的連續(xù)性和分布密度等）。

總之，雖然現(xiàn)有結(jié)果尚不能證明LK-99就是一種”傳統(tǒng)”意義上室溫超導(dǎo)材料，但其獨(dú)特的性能已經(jīng)在預(yù)示著一種新材料和新結(jié)構(gòu)的誕生。我們應(yīng)該結(jié)合現(xiàn)有實(shí)驗(yàn)結(jié)果，不斷完善材料制備方法，并對其進(jìn)行詳細(xì)的結(jié)構(gòu)和基本物性表征，在此基礎(chǔ)上建立新理論，并指導(dǎo)新材料的設(shè)計(jì)。

A Materials Scientist's Perspective on the Room-Temperature Superconducting Material LK-99

Regarding LK-99, the academic community should adopt a scientific attitude and be more tolerant towards new discoveries. As for the current controversy over whether LK-99 is a room-temperature superconductor, as a somewhat professional materials scientist (not a superconductor expert), I ask everyone to pay attention to the following three points:

1) Since we believe that the theory of room-temperature superconductivity should be a completely new theory. The BCS theory can only explain low-temperature superconductivity, while the theory of high-temperature superconductivity is still imperfect. Why do we still want to evaluate room-temperature superconducting materials with the "traditional" superconductivity theory?

2) As can be seen from the structural diagram of LK-99 (Figure 1a), LK-99 is a layered material, and its superconducting phase is a one-dimensional superconducting chain formed across layers. It can be seen that this kind of low-dimensional superconductivity has directionality. Therefore, when testing resistance with the four-point method, it seems that leads should be made along the Z-axis as shown in Figure 1b to obtain accurate results, while current experiments are conducting leads in the X-Y plane as shown in Figure 1c due to insufficient material thickness, which will inevitably greatly affect the detection results.

3) In some "Meissner" effect test experiments, the pinning effect of LK-99 has been demonstrated, rather than ordinary diamagnetism. We should be more inclined to believe that the reason why LK-99 has not yet shown the perfect so-called "Meissner" effect is just due to the imperfections in the material preparation method leading to sample quality issues (such as defects, continuity of the superconducting phase, and distribution density, etc.).

In conclusion, although the existing results cannot prove that LK-99 is a "traditional" room-temperature superconducting material, its unique properties are already indicating the birth of a new material and structure. We should combine the existing experimental results, continuously improve the material preparation methods, carry out detailed structural and basic physical property characterizations, establish new theories on this basis, and guide the design of new materials.