ngµç×ÓÓÎÏ·

05

¿ÆÑÐÏ£Íû

ÎïÀíÓëÌìÎÄѧԺÓáºëÒã½ÌÊÚÍŶÓÕ¹ÏÖË«²ã¹ý¶É½ðÊôÁò»¯ÎïϵͳÖеķ´³£·¢¹âÁ¿×ÓÕ÷Ïó

¸å¼þȪԴ£ºÎïÀíÓëÌìÎÄѧԺ ÔĶÁÁ¿£º

µ¥²ã¹ý¶É½ðÊôÁò»¯ÎïÊÇÒ»ÖÖÖ»Óм¸¸öÔ­×Óºñ¶Èµ«¾ß±¸×¿Ô½¹âµçÐÔ×ӵİ뵼ÌåÖÊÁÏ¡£½«Á½²ã¹ý¶É½ðÊôÁò»¯ÎïÉÏ϶ѵþʱ£¬²ã¼äµÄϸСÏà¶Ôת½Ç¿Éµ¼Ö³¤ÖÜÆÚ¸ÉÔ¤ÌõÎÆµÄ·ºÆð£¬¼´¡°Ä¦¶û³¬¾§¸ñ¡±£¬¼ûͼ1(a)¡£×÷ΪÄý¾Û̬ÎïÀíºÍÁ¿×Ó¹âѧÁìÓò½üÆÚÐËÆðµÄÑо¿Æ½Ì¨£¬Ä¦¶û³¬¾§¸ñϵͳÔÚ̽Ë÷ÐÂÎïÀíºÍÐÂÓ¦ÓÃÉϾßÓÐÆÕ±éÔ¶¾°¡£Ë«²ã¹ý¶É½ðÊôÁò»¯ÎïϵͳµÄ¹âѧÐÔ×ÓÓÉͬʱЯ´ø¾²µçż¼«¾ØºÍ¹âѧż¼«¾ØµÄ²ã¼ä¼¤×ÓÖ÷µ¼£¬¼´Î»ÓÚ²î±ð²ãÖеĵç×ӺͿÕѨͨ¹ý¿âÂØÎüÒýÐγɵÄÀàËÆÓÚÇâÔ­×ÓµÄÔ¼ÊøÌ¬¡£¾²µçż¼«¾ØÊ¹µÃ²ã¼ä¼¤×Ó¿ÉÒÔ±»Íâµç³¡²Ù¿Ø£¬Í¬Ê±µ¼ÖÂÁ˲ã¼ä¼¤×ÓÖ®¼äµÄ³¤³Ìż¼«-ż¼«Ï໥×÷Óã»¶ø¹âѧż¼«¾ØÊ¹µÃ²ã¼ä¼¤×Ó¿ÉÒÔÓë¹â×ÓÏ໥ת»»£¬Í¨¹ý̽²â·Å³öµÄ¹â×Ó¿ÉÒÔÖªµÀ¼¤×ÓµÄÐÅÏ¢¡£Ë«²ã¹ý¶É½ðÊôÁò»¯ÎïÖеIJã¼ä¼¤×ÓϵͳÒò´ËÔÚ¹âµçÓ¦Óú;ßÓйâ²Ù¿ØÐÔµÄÁ¿×Ó¶àÌåÄ£ÄâÁìÓòÊܵ½Ç×½ü¹Ø×¢¡£

¿ËÈÕ£¬ngµç×ÓÓÎÏ·ÎïÀíÓëÌìÎÄѧԺÓáºëÒã½ÌÊÚÓëÏã¸Û´óѧҦÍû½ÌÊÚÏàÖú£¬ÔÚÀíÂÛÉÏÌá³öÁËÔõÑùͨ¹ýË«²ã¹ý¶É½ðÊôÁò»¯Îï·¢¹âÐÔ×ÓÉϵÄת±äÀ´Ñ¸ËÙµØÌ½²â¼¤×ÓµÄÐÐΪ¡£

Ê×Ò³|ngµç×ÓÓÎÏ·Öйú¼¯ÍŹٷ½ÍøÕ¾

ͼ1 (a) Á½²ãÖ®¼äµÄϸСת½Çµ¼Öµij¤ÖÜÆÚ¸ÉÔ¤ÌõÎÆ£¨Ä¦¶û³¬¾§¸ñ£©Ê¾Òâͼ¡£(b) ²»Ë¼Á¿Å¼¼«-ż¼«Ï໥×÷ÓÃʱ£¬±»Ô¼ÊøÔÚÊÆÄÜ×îµÍµãµÄ²ã¼ä¼¤×Ó·¢¹â·Å³öµÄ¹â×Ó¾ßÓÐԲƫÕñÊôÐÔ¡£(c) ²ã¼ä¼¤×ÓÖ®¼äµÄż¼«-ż¼«Ï໥×÷ÓÃʹµÃÆäλÖÃÆ«ÀëÊÆÄÜ×îµÍµã£¬¸ÃÎ»ÒÆÊ¹µÃ¼¤×ӷųöµÄ¹â×Ó´øÓÐÏ߯«Õñ¡£

˼Á¿ÓÉÁ½²ãÏàͬµÄ¹ý¶É½ðÊôÁò»¯Îï¶Ñµþ×é³ÉµÄͬÖʽáϵͳ£¬µ±Á½²ãÖ®¼äÓÐÒ»¸ö¿¿½ü0¶ÈµÄÏà¶Ôת½Çʱ£¬ÄÜÁ¿×îµÍµÄ¼¤×Ó»á±»Ô¼ÊøÔÚĦ¶û³¬Ô­°ûÊÆÄÜ×îµÍµÄÌØÊâλÖô¦£¬¼ûͼ1(b)¡£ÕâЩ¾ÖÓò¼¤×ÓЯ´ø±ÊÖ±Æ½ÃæµÄ¾²µçż¼«¾Ø£¬´Ó¶ø×é³ÉÒ»¸ö¾ßÓнÏǿż¼«-ż¼«Ï໥×÷Óõļ¤×Ó³¬¾§¸ñ¡£ÀíÂÛÆÊÎöÖ¸³ö£¬¸ÃϵͳÖб£´æÒ»ÖÖ·´³£·¢¹âµÄÁ¿×ÓÕ÷Ïó£ºµçż¼«Ï໥×÷Óõ¼ÖµÄ1°£ÊýÄ¿¼¶µÄÏ¸Ð¡Î»ÒÆ»áµ¼Ö¼¤×Ó·¢¹âЧÂʵļ±¾çÔöÌí£¬²¢ÇÒ½«·Å³ö¹â×ӵį«ÕñÐÔ×ÓÓÉԲƫÕñÄð³ÉÏ߯«Õñ£¨¼ûͼ1(c)£©£¬ÆäÖйâ×ÓÏ߯«ÕñµÄÆ«ÏòÓëÎ»ÒÆÊ¸Á¿µÄÆ«ÏòÖðÒ»¶ÔÓ¦¡£ÕâÑùµÄ·´³£·¢¹â¿É×÷ΪĦ¶û³¬¾§¸ñÖм¤×ÓËù´¦Á¿×Ó̬µÄ¹âѧ̽²âÊֶΣ¬Ò²¿ÉÓÃÓÚ̽²âÍâ½çµÄ´ó·Ö×Óż¼«³¡¡£±ðµÄ£¬Òý·¢»òäÎÃðÒ»¸ö¼¤×Ó¿ÉÒԸıäµçż¼«ÊƳ¡£¬´Ó¶ø¸Ä±äÖÜΧÆäÓ༤×ӵķ¢¹âЧÂÊºÍÆ«ÕñÐÔ×Ó£¬µ¼ÖÂÒ»ÖÖÐÂÓ±µÄ·ÇÏßÐÔ¹âѧЧӦ¡£ÕâЩ·¢Ã÷˵Ã÷£¬Ë«²ã¹ý¶É½ðÊôÁò»¯ÎïÖеļ¤×ÓÊÇÒ»ÖÖȫеĿÉÓÃÓÚ̽Ë÷¶àÌåÎïÀíºÍÁ¿×Ó¹âѧӦÓõÄϵͳ¡£

¸ÃЧ¹ûÒÔ¡°Luminescence Anomaly of Dipolar Valley Excitons in Homobilayer Semiconductor Moir¨¦ Superlattices¡±ÎªÌâ½ÒÏþÓÚÃÀ¹úÎïÀíѧ»áÆìϵÄPhysical Review XÆÚ¿¯£¬ngµç×ÓÓÎÏ·ÎïÀíÓëÌìÎÄѧԺÓáºëÒã½ÌÊÚΪµÚÒ»×÷Õߣ¬ÓáºëÒã½ÌÊÚÓëÏã¸Û´óѧҦÍû½ÌÊÚΪÅäºÏͨѶ×÷Õß¡£Ñо¿ÊÂÇé»ñµÃÁ˹ú¼ÒÖØµãÑз¢ÍýÏë¡¢¡¢¡¢¹ã¶«Ê¡¿Æ¼¼¾ÖºÍÏã¸ÛôÃé¶»ù½ð»áµÄ×ÊÖú¡£

ÂÛÎÄÁ´½Ó£ºhttps://journals.aps.org/prx/abstract/10.1103/PhysRevX.11.021042

¡¾ÍøÕ¾µØÍ¼¡¿