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Kyung, W. S.,Huh, S. S.,Koh, Y. Y.,Choi, K.-Y.,Nakajima, M.,Eisaki, H.,Denlinger, J. D.,Mo, S.-K.,Kim, C.,Kim, Y. K. Nature Publishing Group 2016 NATURE MATERIALS Vol.15 No.12
<P>The superconducting transition temperature (T-c) in a FeSe monolayer on SrTiO3 is enhanced up to 100 K (refs 1-4). High T-c is also found in bulk iron chalcogenides with similar electronic structure(5-7) to that of monolayer FeSe, which suggests that higher T-c may be achieved through electron doping, pushing the Fermi surface (FS) topology towards leaving only electron pockets. Such an observation, however, has been limited to chalcogenides, and is in contrast to the iron pnictides, for which the maximum T-c is achieved with both hole and electron pockets forming considerable FS nesting instability(8-11). Here, we report angle-resolved photoemission characterization revealing a monotonic increase of T-c from 24 to 41.5 K upon surface doping on optimally doped Ba(Fe1-xCox)(2)As-2. The doping changes the overall FS topology towards that of chalcogenides through a rigid downward band shift. Our findings suggest that higher electron doping and concomitant changes in FS topology are favourable conditions for the superconductivity, not only for iron chalcogenides, but also for iron pnictides.</P>
The Co-existence of the Gastrocnemius Tertius and Accessory Soleus Muscles
Fatos Belgin Yildirim,Levent Sarikcioglu,Koh Nakajima 대한의학회 2011 Journal of Korean medical science Vol.26 No.10
A bilateral gastrocnemius tertius muscle and a unilateral accessory soleus muscle were encountered during the routine educational dissection studies. The right gastrocnemius tertius muscle consisted of one belly, but the left one of two bellies. On the left side, the superficial belly of the gastrocnemius tertius muscle had its origin from an area just above the tendon of the plantaris muscle, the deep belly from the tendon of the plantaris muscle. The accessory soleus muscle originated from the posteromedial aspect of the tibia and soleal line of the tibia and inserted to the medial surface of the calcaneus. On the right side, the gastrocnemius tertius muscle had its origin from the lateral condyle of the femur,and inserted to the medial head of the gastrocnemius muscle. The co-existence of both gastrocnemius tertius and accessory soleus muscle has not, to our knowledge, been previously reported.