Zobrazeno 1 - 10
of 298
pro vyhledávání: '"Crabtree, G. W."'
Autor:
Han, F., Xu, J., Botana, A. S., Xiao, Z. L., Wang, Y. L., Yang, W. G., Chung, D. Y., Kanatzidis, M. G., Norman, M. R., Crabtree, G. W., Kwok, W. K.
Publikováno v:
Phys. Rev. B 96, 125112 (2017)
We report investigations on the magnetotransport in LaSb, which exhibits extremely large magnetoresistance (XMR). Foremost, we demonstrate that the resistivity plateau can be explained without invoking topological protection. We then determine the Fe
Externí odkaz:
http://arxiv.org/abs/1708.05416
Autor:
Wang, Y. L., Thoutam, L. R., Xiao, Z. L., Shen, B., Pearson, J. E., Divan, R., Ocola, L. E., Crabtree, G. W., Kwok, W. K.
Publikováno v:
Phys. Rev. B 93, 045111 (2016)
The key ingredient of high critical currents in a type-II superconductor is defect sites that 'pin' vortices. Contrary to earlier understanding on nano-patterned artificial pinning, here we show unequivocally the advantages of a random pinscape over
Externí odkaz:
http://arxiv.org/abs/1512.05231
Autor:
Wang, Y. L., Thoutam, L. R., Xiao, Z. L., Hu, J., Das, S., Mao, Z. Q., Wei, J., Divan, R., Luican-Mayer, A., Crabtree, G. W., Kwok, W. K.
Publikováno v:
Phys. Rev. B 92, 180402(R) 2015
A hallmark of materials with extremely large magnetoresistance (XMR) is the transformative 'turn-on' temperature behavior: when the applied magnetic field $H$ is above certain value, the resistivity versus temperature $\rho(T)$ curve shows a minimum
Externí odkaz:
http://arxiv.org/abs/1510.06976
Autor:
Sadovskyy, I. A., Jia, Y., Leroux, M., Kwon, J., Hu, H., Fang, L., Chaparro, C., Zhu, S., Welp, U., Zuo, J. -M., Zhang, Y., Nakasaki, R., Selvamanickam, V., Crabtree, G. W., Koshelev, A. E., Glatz, A., Kwok, W. -K.
Publikováno v:
Adv. Mat. 28, 4593 (2016)
We present the new paradigm of critical current by design. Analogous to materials by design, it aims at predicting the optimal defect landscape in a superconductor for targeted applications by elucidating the vortex dynamics responsible for the bulk
Externí odkaz:
http://arxiv.org/abs/1509.06446
Autor:
Thoutam, L. R., Wang, Y. L., Xiao, Z. L., Das, S., Luican-Mayer, A., Divan, R., Crabtree, G. W., Kwok, W. K.
Publikováno v:
Phys. Rev. Lett. 115, 046602 (2015)
Extremely large magnetoresistance (XMR) was recently discovered in WTe$_2$, triggering extensive research on this material regarding the XMR origin. Since WTe$_2$ is a layered compound with metal layers sandwiched between adjacent insulating chalcoge
Externí odkaz:
http://arxiv.org/abs/1506.02214
Autor:
Wang, Yong-Lei, Latimer, M. L., Xiao, Zhi-Li, Divan, R., Ocola, L. E., Crabtree, G. W., Kwok, Wai-Kwong
Publikováno v:
Phys. Rev. B 87, 220501(R) (2013)
The maximum current (critical current) a type-II superconductor can transmit without energy loss is limited by the motion of the quantized magnetic flux penetrating into a superconductor. Introducing nanoscale holes into a superconducting film has be
Externí odkaz:
http://arxiv.org/abs/1306.0147
Autor:
Fang, L., Jia, Y., Miller, D. J., Latimer, M. L., Xiao, Z. L., Welp, U., Crabtree, G. W., Kwok, W. -K.
Publikováno v:
Nano Lett. 2012, 12, 6164
We report the growth of single-crystalline Bi2Se3 nanoribbons with lengths up to several millimeters via a catalyst-free physical vapor deposition method. Scanning transmission electron microscopy analysis reveals that the nanoribbons grow along the
Externí odkaz:
http://arxiv.org/abs/1208.4532
Autor:
Chaparro, C., Fang, L., Claus, H., Rydh, A., Crabtree, G. W., Stanev, V., Kwok, W. K., Welp, U.
We present specific heat measurements on a series of BaFe2(As1-xPx)2 single crystals with phosphorous doping ranging from x = 0.3 to 0.55. Our results reveal that BaFe2(As1-xPx)2 follows the scaling Delta_C/Tc ~ Tc^2 remarkably well. The clean-limit
Externí odkaz:
http://arxiv.org/abs/1110.3075
Autor:
Fang, L., Jia, Y., Schlueter, J. A., Kayani, A., Xiao, Z. L., Claus, H., Welp, U., Koshelev, A. E., Crabtree, G. W., Kwok, W. -K.
We report on the systematic evolution of vortex pinning behavior in isovalent doped single crystals of BaFe2(As1-xPx)2. Proceeding from optimal doped to ovedoped samples, we find a clear transfor- mation of the magnetization hysteresis from a fishtai
Externí odkaz:
http://arxiv.org/abs/1106.2599
Autor:
Hua, J., Xiao, Z. L., Rosenmann, D., Beloborodov, I. S., Welp, U., Kwok, W. K., Crabtree, G. W.
Publikováno v:
Appl. Phys. Lett. 90, 072507 (2007)
We report on a resistance anomaly in disordered superconducting films containing arrays of irregularly distributed nanoscale holes. At high driving currents, peaks appear in the resistance as a function of temperature, with peak values up to 2% above
Externí odkaz:
http://arxiv.org/abs/cond-mat/0701483