Evidence of a Kondo Destroying Quantum Critical Point in YbRh2Si2
文献类型：期刊论文
| 作者 | Steglich, F ; Pfau, H ; Lausberg, S ; Hamann, S ; Sun, PJ ; Stockert, U ; Brando, M ; Friedemann, S ; Krellner, C ; Geibel, C ; Wirth, S ; Kirchner, S ; Abrahams, E ; Si, QM |
| 刊名 | JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
 |
| 出版日期 | 2014 |
| 卷号 | 83期号:6 |
| ISSN号 | 0031-9015 |
| 通讯作者 | Steglich, F (reprint author), Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany. |
| 中文摘要 | The heavy-fermion metal YbRh2Si2 is a weak antiferromagnet below T-N = 0.07 K. Application of a low magnetic field B-c = 0.06 T (perpendicular to c) is sufficient to continuously suppress the antiferromagnetic (AF) order. Below T approximate to 10 K, the Sommerfeld coefficient of the electronic specific heat gamma(T) exhibits a logarithmic divergence. At T < 0.3 K, gamma(T) similar to T-epsilon (epsilon : 0.3-0.4), while the electrical resistivity rho(T) = rho(0) + aT (rho(0): residual resistivity). Upon extrapolating finite-T data of transport and thermodynamic quantities to T = 0, one observes (i) a vanishing of the "Fermi surface crossover" scale T* (B), (ii) an abrupt jump of the initial Hall coefficient R-H(B) and (iii) a violation of the Wiedemann Franz law at B = B-c, the field-induced quantum critical point (QCP). These observations are interpreted as evidence of a critical destruction of the heavy quasiparticles, i. e., propagating Kondo singlets, at the QCP of this material. |
| 资助信息 | DFG [FOR 960]; NSF [DMR-1309531]; Robert A. Welch Grant [C-1411] |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59295]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Steglich, F,Pfau, H,Lausberg, S,et al. Evidence of a Kondo Destroying Quantum Critical Point in YbRh2Si2[J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN,2014,83(6). |
| APA | Steglich, F.,Pfau, H.,Lausberg, S.,Hamann, S.,Sun, PJ.,...&Si, QM.(2014).Evidence of a Kondo Destroying Quantum Critical Point in YbRh2Si2.JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN,83(6). |
| MLA | Steglich, F,et al."Evidence of a Kondo Destroying Quantum Critical Point in YbRh2Si2".JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 83.6(2014). |
入库方式： OAI收割
来源：物理研究所
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