11B-NMR Study of SmB6 under Pressure
G. Pristáša, b, T. Mitoa, T. Koharaa, S. Gabánib, M. Reiffersb, K. Flachbartb, N. Takeshitac and N. Shitsevalovad
aGraduate School of Material Science, University of Hyogo, Kamigori-cho, Ako-gun, Hyogo 678-1297, Japan
bInstitute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 04001 Košice, Slovakia
cNanoelectronics Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 505-8562, Japan
dInstitute for Problems of Material Science, National Academy of Sciences of Ukraine, Krzhyzhanovsky Str. 3, 03680 Kiev, Ukraine
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We present first experimental results of 11B-NMR of SmB6 under applied pressure. From measurement of nuclear spin-lattice relaxation time (T1) we find that with applied pressure the value of activation gap Eg is decreasing. This decrease is larger than in case of other experimental techniques. We suppose that the enhancement of 1/T1 in temperature range 20-100 K with applied pressure reflects not only a suppression of hybridization gap, but also changes in spin correlations.
DOI: 10.12693/APhysPolA.118.895
PACS numbers: 76.60.-k, 62.50.-p, 71.28.+d